feat(frontend/builder): Add sub-graph update UX (#11631)

[OPEN-2743: Ability to Update Sub-Agents in Graph (Without
Re-Adding)](https://linear.app/autogpt/issue/OPEN-2743/ability-to-update-sub-agents-in-graph-without-re-adding)

Updating sub-graphs is a cumbersome experience at the moment, this
should help. :)

Demo in Builder v2:


https://github.com/user-attachments/assets/df564f32-4d1d-432c-bb91-fe9065068360


https://github.com/user-attachments/assets/f169471a-1f22-46e9-a958-ddb72d3f65af


### Changes 🏗️

- Add sub-graph update banner with I/O incompatibility notification and
resolution mode
  - Red visual indicators for broken inputs/outputs and edges
  - Update bars and tooltips show compatibility details
- Sub-agent update UI with compatibility checks, incompatibility dialog,
and guided resolution workflow
- Resolution mode banner guiding users to remove incompatible
connections
- Visual controls to stage/apply updates and auto-apply when broken
connections are fixed
  
  Technical:
- Builder v1: Add `CustomNode` > `IncompatibilityDialog` +
`SubAgentUpdateBar` sub-components
- Builder v2: Add `SubAgentUpdateFeature` + `ResolutionModeBar` +
`IncompatibleUpdateDialog` + `useSubAgentUpdateState` sub-components
  - Add `useSubAgentUpdate` hook

- Related fixes in Builder v1:
  - Fix static edges not rendering as such
  - Fix edge styling not applying
- Related fixes in Builder v2:
  - Fix excess spacing for nested node input fields

Other:
- "Retry" button in error view now reloads the page instead of
navigating to `/marketplace`

### Checklist 📋

#### For code changes:
- [x] I have clearly listed my changes in the PR description
- [x] I have made a test plan
- [x] I have tested my changes according to the test plan:
  - CI for existing frontend UX flows
- [x] Updating to a new sub-agent version with compatibility issues: UX
flow works
- [x] Updating to a new sub-agent version with *no* compatibility
issues: works
  - [x] Designer approves of the look

---------

Co-authored-by: abhi1992002 <abhimanyu1992002@gmail.com>
Co-authored-by: Abhimanyu Yadav <122007096+Abhi1992002@users.noreply.github.com>

autogpt_platform/frontend/src/app/(platform)/build/components/BuilderActions/components/RunInputDialog/RunInputDialog.tsx

@@ -81,18 +81,16 @@ export const RunInputDialog = ({
                     Inputs
                   </Text>
                 </div>
-                <div className="px-2">
+                <FormRenderer
-                  <FormRenderer
+                  jsonSchema={inputSchema as RJSFSchema}
-                    jsonSchema={inputSchema as RJSFSchema}
+                  handleChange={(v) => handleInputChange(v.formData)}
-                    handleChange={(v) => handleInputChange(v.formData)}
+                  uiSchema={uiSchema}
-                    uiSchema={uiSchema}
+                  initialValues={{}}
-                    initialValues={{}}
+                  formContext={{
-                    formContext={{
+                    showHandles: false,
-                      showHandles: false,
+                    size: "large",
-                      size: "large",
+                  }}
-                    }}
+                />
-                  />
-                </div>
               </div>
             )}
 

autogpt_platform/frontend/src/app/(platform)/build/components/FlowEditor/Flow/useFlow.ts

@@ -3,6 +3,7 @@ import { useGetV2GetSpecificBlocks } from "@/app/api/__generated__/endpoints/def
 import {
   useGetV1GetExecutionDetails,
   useGetV1GetSpecificGraph,
+  useGetV1ListUserGraphs,
 } from "@/app/api/__generated__/endpoints/graphs/graphs";
 import { BlockInfo } from "@/app/api/__generated__/models/blockInfo";
 import { GraphModel } from "@/app/api/__generated__/models/graphModel";
@@ -17,6 +18,7 @@ import { useReactFlow } from "@xyflow/react";
 import { useControlPanelStore } from "../../../stores/controlPanelStore";
 import { useHistoryStore } from "../../../stores/historyStore";
 import { AgentExecutionStatus } from "@/app/api/__generated__/models/agentExecutionStatus";
+import { okData } from "@/app/api/helpers";
 
 export const useFlow = () => {
   const [isLocked, setIsLocked] = useState(false);
@@ -36,6 +38,9 @@ export const useFlow = () => {
   const setGraphExecutionStatus = useGraphStore(
     useShallow((state) => state.setGraphExecutionStatus),
   );
+  const setAvailableSubGraphs = useGraphStore(
+    useShallow((state) => state.setAvailableSubGraphs),
+  );
   const updateEdgeBeads = useEdgeStore(
     useShallow((state) => state.updateEdgeBeads),
   );
@@ -62,6 +67,11 @@ export const useFlow = () => {
     },
   );
 
+  // Fetch all available graphs for sub-agent update detection
+  const { data: availableGraphs } = useGetV1ListUserGraphs({
+    query: { select: okData },
+  });
+
   const { data: graph, isLoading: isGraphLoading } = useGetV1GetSpecificGraph(
     flowID ?? "",
     flowVersion !== null ? { version: flowVersion } : {},
@@ -116,10 +126,18 @@ export const useFlow = () => {
     }
   }, [graph]);
 
+  // Update available sub-graphs in store for sub-agent update detection
+  useEffect(() => {
+    if (availableGraphs) {
+      setAvailableSubGraphs(availableGraphs);
+    }
+  }, [availableGraphs, setAvailableSubGraphs]);
+
   // adding nodes
   useEffect(() => {
     if (customNodes.length > 0) {
       useNodeStore.getState().setNodes([]);
+      useNodeStore.getState().clearResolutionState();
       addNodes(customNodes);
 
       // Sync hardcoded values with handle IDs.
@@ -203,6 +221,7 @@ export const useFlow = () => {
   useEffect(() => {
     return () => {
       useNodeStore.getState().setNodes([]);
+      useNodeStore.getState().clearResolutionState();
       useEdgeStore.getState().setEdges([]);
       useGraphStore.getState().reset();
       useEdgeStore.getState().resetEdgeBeads();

autogpt_platform/frontend/src/app/(platform)/build/components/FlowEditor/edges/CustomEdge.tsx

@@ -8,6 +8,7 @@ import {
   getBezierPath,
 } from "@xyflow/react";
 import { useEdgeStore } from "@/app/(platform)/build/stores/edgeStore";
+import { useNodeStore } from "@/app/(platform)/build/stores/nodeStore";
 import { XIcon } from "@phosphor-icons/react";
 import { cn } from "@/lib/utils";
 import { NodeExecutionResult } from "@/lib/autogpt-server-api";
@@ -35,6 +36,8 @@ const CustomEdge = ({
   selected,
 }: EdgeProps<CustomEdge>) => {
   const removeConnection = useEdgeStore((state) => state.removeEdge);
+  // Subscribe to the brokenEdgeIDs map and check if this edge is broken across any node
+  const isBroken = useNodeStore((state) => state.isEdgeBroken(id));
   const [isHovered, setIsHovered] = useState(false);
 
   const [edgePath, labelX, labelY] = getBezierPath({
@@ -50,6 +53,12 @@ const CustomEdge = ({
   const beadUp = data?.beadUp ?? 0;
   const beadDown = data?.beadDown ?? 0;
 
+  const handleRemoveEdge = () => {
+    removeConnection(id);
+    // Note: broken edge tracking is cleaned up automatically by useSubAgentUpdateState
+    // when it detects the edge no longer exists
+  };
+
   return (
     <>
       <BaseEdge
@@ -57,9 +66,11 @@ const CustomEdge = ({
         markerEnd={markerEnd}
         className={cn(
           isStatic && "!stroke-[1.5px] [stroke-dasharray:6]",
-          selected
+          isBroken
-            ? "stroke-zinc-800"
+            ? "!stroke-red-500 !stroke-[2px] [stroke-dasharray:4]"
-            : "stroke-zinc-500/50 hover:stroke-zinc-500",
+            : selected
+              ? "stroke-zinc-800"
+              : "stroke-zinc-500/50 hover:stroke-zinc-500",
         )}
       />
       <JSBeads
@@ -70,12 +81,16 @@ const CustomEdge = ({
       />
       <EdgeLabelRenderer>
         <Button
-          onClick={() => removeConnection(id)}
+          onClick={handleRemoveEdge}
           className={cn(
             "absolute h-fit min-w-0 p-1 transition-opacity",
-            isHovered ? "opacity-100" : "opacity-0",
+            isBroken
+              ? "bg-red-500 opacity-100 hover:bg-red-600"
+              : isHovered
+                ? "opacity-100"
+                : "opacity-0",
           )}
-          variant="secondary"
+          variant={isBroken ? "primary" : "secondary"}
           style={{
             transform: `translate(-50%, -50%) translate(${labelX}px, ${labelY}px)`,
             pointerEvents: "all",

autogpt_platform/frontend/src/app/(platform)/build/components/FlowEditor/handlers/NodeHandle.tsx

@@ -3,6 +3,7 @@ import { Handle, Position } from "@xyflow/react";
 import { useEdgeStore } from "../../../stores/edgeStore";
 import { cleanUpHandleId } from "@/components/renderers/InputRenderer/helpers";
 import { cn } from "@/lib/utils";
+import { useNodeStore } from "../../../stores/nodeStore";
 
 const InputNodeHandle = ({
   handleId,
@@ -15,6 +16,9 @@ const InputNodeHandle = ({
   const isInputConnected = useEdgeStore((state) =>
     state.isInputConnected(nodeId ?? "", cleanedHandleId),
   );
+  const isInputBroken = useNodeStore((state) =>
+    state.isInputBroken(nodeId, cleanedHandleId),
+  );
 
   return (
     <Handle
@@ -27,7 +31,10 @@ const InputNodeHandle = ({
         <CircleIcon
           size={16}
           weight={isInputConnected ? "fill" : "duotone"}
-          className={"text-gray-400 opacity-100"}
+          className={cn(
+            "text-gray-400 opacity-100",
+            isInputBroken && "text-red-500",
+          )}
         />
       </div>
     </Handle>
@@ -38,14 +45,17 @@ const OutputNodeHandle = ({
   field_name,
   nodeId,
   hexColor,
+  isBroken,
 }: {
   field_name: string;
   nodeId: string;
   hexColor: string;
+  isBroken: boolean;
 }) => {
   const isOutputConnected = useEdgeStore((state) =>
     state.isOutputConnected(nodeId, field_name),
   );
+
   return (
     <Handle
       type={"source"}
@@ -58,7 +68,10 @@ const OutputNodeHandle = ({
           size={16}
           weight={"duotone"}
           color={isOutputConnected ? hexColor : "gray"}
-          className={cn("text-gray-400 opacity-100")}
+          className={cn(
+            "text-gray-400 opacity-100",
+            isBroken && "text-red-500",
+          )}
         />
       </div>
     </Handle>

autogpt_platform/frontend/src/app/(platform)/build/components/FlowEditor/nodes/CustomNode/CustomNode.tsx

@@ -20,6 +20,8 @@ import { NodeDataRenderer } from "./components/NodeOutput/NodeOutput";
 import { NodeRightClickMenu } from "./components/NodeRightClickMenu";
 import { StickyNoteBlock } from "./components/StickyNoteBlock";
 import { WebhookDisclaimer } from "./components/WebhookDisclaimer";
+import { SubAgentUpdateFeature } from "./components/SubAgentUpdate/SubAgentUpdateFeature";
+import { useCustomNode } from "./useCustomNode";
 
 export type CustomNodeData = {
   hardcodedValues: {
@@ -45,6 +47,10 @@ export type CustomNode = XYNode<CustomNodeData, "custom">;
 
 export const CustomNode: React.FC<NodeProps<CustomNode>> = React.memo(
   ({ data, id: nodeId, selected }) => {
+    const { inputSchema, outputSchema } = useCustomNode({ data, nodeId });
+
+    const isAgent = data.uiType === BlockUIType.AGENT;
+
     if (data.uiType === BlockUIType.NOTE) {
       return (
         <StickyNoteBlock data={data} selected={selected} nodeId={nodeId} />
@@ -63,16 +69,6 @@ export const CustomNode: React.FC<NodeProps<CustomNode>> = React.memo(
 
     const isAyrshare = data.uiType === BlockUIType.AYRSHARE;
 
-    const inputSchema =
-      data.uiType === BlockUIType.AGENT
-        ? (data.hardcodedValues.input_schema ?? {})
-        : data.inputSchema;
-
-    const outputSchema =
-      data.uiType === BlockUIType.AGENT
-        ? (data.hardcodedValues.output_schema ?? {})
-        : data.outputSchema;
-
     const hasConfigErrors =
       data.errors &&
       Object.values(data.errors).some(
@@ -87,12 +83,11 @@ export const CustomNode: React.FC<NodeProps<CustomNode>> = React.memo(
 
     const hasErrors = hasConfigErrors || hasOutputError;
 
-    // Currently all blockTypes design are similar - that's why i am using the same component for all of them
-    // If in future - if we need some drastic change in some blockTypes design - we can create separate components for them
     const node = (
       <NodeContainer selected={selected} nodeId={nodeId} hasErrors={hasErrors}>
         <div className="rounded-xlarge bg-white">
           <NodeHeader data={data} nodeId={nodeId} />
+          {isAgent && <SubAgentUpdateFeature nodeID={nodeId} nodeData={data} />}
           {isWebhook && <WebhookDisclaimer nodeId={nodeId} />}
           {isAyrshare && <AyrshareConnectButton />}
           <FormCreator

autogpt_platform/frontend/src/app/(platform)/build/components/FlowEditor/nodes/CustomNode/components/SubAgentUpdate/SubAgentUpdateFeature.tsx

@@ -0,0 +1,118 @@
+import React from "react";
+import { ArrowUpIcon, WarningIcon } from "@phosphor-icons/react";
+import { Button } from "@/components/atoms/Button/Button";
+import {
+  Tooltip,
+  TooltipContent,
+  TooltipTrigger,
+} from "@/components/atoms/Tooltip/BaseTooltip";
+import { cn, beautifyString } from "@/lib/utils";
+import { CustomNodeData } from "../../CustomNode";
+import { useSubAgentUpdateState } from "./useSubAgentUpdateState";
+import { IncompatibleUpdateDialog } from "./components/IncompatibleUpdateDialog";
+import { ResolutionModeBar } from "./components/ResolutionModeBar";
+
+/**
+ * Inline component for the update bar that can be placed after the header.
+ * Use this inside the node content where you want the bar to appear.
+ */
+type SubAgentUpdateFeatureProps = {
+  nodeID: string;
+  nodeData: CustomNodeData;
+};
+
+export function SubAgentUpdateFeature({
+  nodeID,
+  nodeData,
+}: SubAgentUpdateFeatureProps) {
+  const {
+    updateInfo,
+    isInResolutionMode,
+    handleUpdateClick,
+    showIncompatibilityDialog,
+    setShowIncompatibilityDialog,
+    handleConfirmIncompatibleUpdate,
+  } = useSubAgentUpdateState({ nodeID: nodeID, nodeData: nodeData });
+
+  const agentName = nodeData.title || "Agent";
+
+  if (!updateInfo.hasUpdate && !isInResolutionMode) {
+    return null;
+  }
+
+  return (
+    <>
+      {isInResolutionMode ? (
+        <ResolutionModeBar incompatibilities={updateInfo.incompatibilities} />
+      ) : (
+        <SubAgentUpdateAvailableBar
+          currentVersion={updateInfo.currentVersion}
+          latestVersion={updateInfo.latestVersion}
+          isCompatible={updateInfo.isCompatible}
+          onUpdate={handleUpdateClick}
+        />
+      )}
+      {/* Incompatibility dialog - rendered here since this component owns the state */}
+      {updateInfo.incompatibilities && (
+        <IncompatibleUpdateDialog
+          isOpen={showIncompatibilityDialog}
+          onClose={() => setShowIncompatibilityDialog(false)}
+          onConfirm={handleConfirmIncompatibleUpdate}
+          currentVersion={updateInfo.currentVersion}
+          latestVersion={updateInfo.latestVersion}
+          agentName={beautifyString(agentName)}
+          incompatibilities={updateInfo.incompatibilities}
+        />
+      )}
+    </>
+  );
+}
+
+type SubAgentUpdateAvailableBarProps = {
+  currentVersion: number;
+  latestVersion: number;
+  isCompatible: boolean;
+  onUpdate: () => void;
+};
+
+function SubAgentUpdateAvailableBar({
+  currentVersion,
+  latestVersion,
+  isCompatible,
+  onUpdate,
+}: SubAgentUpdateAvailableBarProps): React.ReactElement {
+  return (
+    <div className="flex items-center justify-between gap-2 rounded-t-xl bg-blue-50 px-3 py-2 dark:bg-blue-900/30">
+      <div className="flex items-center gap-2">
+        <ArrowUpIcon className="h-4 w-4 text-blue-600 dark:text-blue-400" />
+        <span className="text-sm text-blue-700 dark:text-blue-300">
+          Update available (v{currentVersion} → v{latestVersion})
+        </span>
+        {!isCompatible && (
+          <Tooltip>
+            <TooltipTrigger asChild>
+              <WarningIcon className="h-4 w-4 text-amber-500" />
+            </TooltipTrigger>
+            <TooltipContent className="max-w-xs">
+              <p className="font-medium">Incompatible changes detected</p>
+              <p className="text-xs text-gray-400">
+                Click Update to see details
+              </p>
+            </TooltipContent>
+          </Tooltip>
+        )}
+      </div>
+      <Button
+        size="small"
+        variant={isCompatible ? "primary" : "outline"}
+        onClick={onUpdate}
+        className={cn(
+          "h-7 text-xs",
+          !isCompatible && "border-amber-500 text-amber-600 hover:bg-amber-50",
+        )}
+      >
+        Update
+      </Button>
+    </div>
+  );
+}

autogpt_platform/frontend/src/app/(platform)/build/components/FlowEditor/nodes/CustomNode/components/SubAgentUpdate/components/IncompatibleUpdateDialog.tsx

@@ -0,0 +1,274 @@
+import React from "react";
+import {
+  WarningIcon,
+  XCircleIcon,
+  PlusCircleIcon,
+} from "@phosphor-icons/react";
+import { Button } from "@/components/atoms/Button/Button";
+import { Alert, AlertDescription } from "@/components/molecules/Alert/Alert";
+import { Dialog } from "@/components/molecules/Dialog/Dialog";
+import { beautifyString } from "@/lib/utils";
+import { IncompatibilityInfo } from "@/app/(platform)/build/hooks/useSubAgentUpdate/types";
+
+type IncompatibleUpdateDialogProps = {
+  isOpen: boolean;
+  onClose: () => void;
+  onConfirm: () => void;
+  currentVersion: number;
+  latestVersion: number;
+  agentName: string;
+  incompatibilities: IncompatibilityInfo;
+};
+
+export function IncompatibleUpdateDialog({
+  isOpen,
+  onClose,
+  onConfirm,
+  currentVersion,
+  latestVersion,
+  agentName,
+  incompatibilities,
+}: IncompatibleUpdateDialogProps) {
+  const hasMissingInputs = incompatibilities.missingInputs.length > 0;
+  const hasMissingOutputs = incompatibilities.missingOutputs.length > 0;
+  const hasNewInputs = incompatibilities.newInputs.length > 0;
+  const hasNewOutputs = incompatibilities.newOutputs.length > 0;
+  const hasNewRequired = incompatibilities.newRequiredInputs.length > 0;
+  const hasTypeMismatches = incompatibilities.inputTypeMismatches.length > 0;
+
+  const hasInputChanges = hasMissingInputs || hasNewInputs;
+  const hasOutputChanges = hasMissingOutputs || hasNewOutputs;
+
+  return (
+    <Dialog
+      title={
+        <div className="flex items-center gap-2">
+          <WarningIcon className="h-5 w-5 text-amber-500" weight="fill" />
+          Incompatible Update
+        </div>
+      }
+      controlled={{
+        isOpen,
+        set: async (open) => {
+          if (!open) onClose();
+        },
+      }}
+      onClose={onClose}
+      styling={{ maxWidth: "32rem" }}
+    >
+      <Dialog.Content>
+        <div className="space-y-4">
+          <p className="text-sm text-gray-600 dark:text-gray-400">
+            Updating <strong>{beautifyString(agentName)}</strong> from v
+            {currentVersion} to v{latestVersion} will break some connections.
+          </p>
+
+          {/* Input changes - two column layout */}
+          {hasInputChanges && (
+            <TwoColumnSection
+              title="Input Changes"
+              leftIcon={
+                <XCircleIcon className="h-4 w-4 text-red-500" weight="fill" />
+              }
+              leftTitle="Removed"
+              leftItems={incompatibilities.missingInputs}
+              rightIcon={
+                <PlusCircleIcon
+                  className="h-4 w-4 text-green-500"
+                  weight="fill"
+                />
+              }
+              rightTitle="Added"
+              rightItems={incompatibilities.newInputs}
+            />
+          )}
+
+          {/* Output changes - two column layout */}
+          {hasOutputChanges && (
+            <TwoColumnSection
+              title="Output Changes"
+              leftIcon={
+                <XCircleIcon className="h-4 w-4 text-red-500" weight="fill" />
+              }
+              leftTitle="Removed"
+              leftItems={incompatibilities.missingOutputs}
+              rightIcon={
+                <PlusCircleIcon
+                  className="h-4 w-4 text-green-500"
+                  weight="fill"
+                />
+              }
+              rightTitle="Added"
+              rightItems={incompatibilities.newOutputs}
+            />
+          )}
+
+          {hasTypeMismatches && (
+            <SingleColumnSection
+              icon={
+                <XCircleIcon className="h-4 w-4 text-red-500" weight="fill" />
+              }
+              title="Type Changed"
+              description="These connected inputs have a different type:"
+              items={incompatibilities.inputTypeMismatches.map(
+                (m) => `${m.name} (${m.oldType} → ${m.newType})`,
+              )}
+            />
+          )}
+
+          {hasNewRequired && (
+            <SingleColumnSection
+              icon={
+                <PlusCircleIcon
+                  className="h-4 w-4 text-amber-500"
+                  weight="fill"
+                />
+              }
+              title="New Required Inputs"
+              description="These inputs are now required:"
+              items={incompatibilities.newRequiredInputs}
+            />
+          )}
+
+          <Alert variant="warning">
+            <AlertDescription>
+              If you proceed, you&apos;ll need to remove the broken connections
+              before you can save or run your agent.
+            </AlertDescription>
+          </Alert>
+
+          <Dialog.Footer>
+            <Button variant="ghost" size="small" onClick={onClose}>
+              Cancel
+            </Button>
+            <Button
+              variant="primary"
+              size="small"
+              onClick={onConfirm}
+              className="border-amber-700 bg-amber-600 hover:bg-amber-700"
+            >
+              Update Anyway
+            </Button>
+          </Dialog.Footer>
+        </div>
+      </Dialog.Content>
+    </Dialog>
+  );
+}
+
+type TwoColumnSectionProps = {
+  title: string;
+  leftIcon: React.ReactNode;
+  leftTitle: string;
+  leftItems: string[];
+  rightIcon: React.ReactNode;
+  rightTitle: string;
+  rightItems: string[];
+};
+
+function TwoColumnSection({
+  title,
+  leftIcon,
+  leftTitle,
+  leftItems,
+  rightIcon,
+  rightTitle,
+  rightItems,
+}: TwoColumnSectionProps) {
+  return (
+    <div className="rounded-md border border-gray-200 p-3 dark:border-gray-700">
+      <span className="font-medium">{title}</span>
+      <div className="mt-2 grid grid-cols-2 items-start gap-4">
+        {/* Left column - Breaking changes */}
+        <div className="min-w-0">
+          <div className="flex items-center gap-1.5 text-sm text-gray-500 dark:text-gray-400">
+            {leftIcon}
+            <span>{leftTitle}</span>
+          </div>
+          <ul className="mt-1.5 space-y-1">
+            {leftItems.length > 0 ? (
+              leftItems.map((item) => (
+                <li
+                  key={item}
+                  className="text-sm text-gray-700 dark:text-gray-300"
+                >
+                  <code className="rounded bg-red-50 px-1 py-0.5 font-mono text-xs text-red-700 dark:bg-red-900/30 dark:text-red-300">
+                    {item}
+                  </code>
+                </li>
+              ))
+            ) : (
+              <li className="text-sm italic text-gray-400 dark:text-gray-500">
+                None
+              </li>
+            )}
+          </ul>
+        </div>
+
+        {/* Right column - Possible solutions */}
+        <div className="min-w-0">
+          <div className="flex items-center gap-1.5 text-sm text-gray-500 dark:text-gray-400">
+            {rightIcon}
+            <span>{rightTitle}</span>
+          </div>
+          <ul className="mt-1.5 space-y-1">
+            {rightItems.length > 0 ? (
+              rightItems.map((item) => (
+                <li
+                  key={item}
+                  className="text-sm text-gray-700 dark:text-gray-300"
+                >
+                  <code className="rounded bg-green-50 px-1 py-0.5 font-mono text-xs text-green-700 dark:bg-green-900/30 dark:text-green-300">
+                    {item}
+                  </code>
+                </li>
+              ))
+            ) : (
+              <li className="text-sm italic text-gray-400 dark:text-gray-500">
+                None
+              </li>
+            )}
+          </ul>
+        </div>
+      </div>
+    </div>
+  );
+}
+
+type SingleColumnSectionProps = {
+  icon: React.ReactNode;
+  title: string;
+  description: string;
+  items: string[];
+};
+
+function SingleColumnSection({
+  icon,
+  title,
+  description,
+  items,
+}: SingleColumnSectionProps) {
+  return (
+    <div className="rounded-md border border-gray-200 p-3 dark:border-gray-700">
+      <div className="flex items-center gap-2">
+        {icon}
+        <span className="font-medium">{title}</span>
+      </div>
+      <p className="mt-1 text-sm text-gray-500 dark:text-gray-400">
+        {description}
+      </p>
+      <ul className="mt-2 space-y-1">
+        {items.map((item) => (
+          <li
+            key={item}
+            className="ml-4 list-disc text-sm text-gray-700 dark:text-gray-300"
+          >
+            <code className="rounded bg-gray-100 px-1 py-0.5 font-mono text-xs dark:bg-gray-800">
+              {item}
+            </code>
+          </li>
+        ))}
+      </ul>
+    </div>
+  );
+}

autogpt_platform/frontend/src/app/(platform)/build/components/FlowEditor/nodes/CustomNode/components/SubAgentUpdate/components/ResolutionModeBar.tsx

@@ -0,0 +1,107 @@
+import React from "react";
+import { InfoIcon, WarningIcon } from "@phosphor-icons/react";
+import {
+  Tooltip,
+  TooltipContent,
+  TooltipTrigger,
+} from "@/components/atoms/Tooltip/BaseTooltip";
+import { IncompatibilityInfo } from "@/app/(platform)/build/hooks/useSubAgentUpdate/types";
+
+type ResolutionModeBarProps = {
+  incompatibilities: IncompatibilityInfo | null;
+};
+
+export function ResolutionModeBar({
+  incompatibilities,
+}: ResolutionModeBarProps): React.ReactElement {
+  const renderIncompatibilities = () => {
+    if (!incompatibilities) return <span>No incompatibilities</span>;
+
+    const sections: React.ReactNode[] = [];
+
+    if (incompatibilities.missingInputs.length > 0) {
+      sections.push(
+        <div key="missing-inputs" className="mb-1">
+          <span className="font-semibold">Missing inputs: </span>
+          {incompatibilities.missingInputs.map((name, i) => (
+            <React.Fragment key={name}>
+              <code className="font-mono">{name}</code>
+              {i < incompatibilities.missingInputs.length - 1 && ", "}
+            </React.Fragment>
+          ))}
+        </div>,
+      );
+    }
+    if (incompatibilities.missingOutputs.length > 0) {
+      sections.push(
+        <div key="missing-outputs" className="mb-1">
+          <span className="font-semibold">Missing outputs: </span>
+          {incompatibilities.missingOutputs.map((name, i) => (
+            <React.Fragment key={name}>
+              <code className="font-mono">{name}</code>
+              {i < incompatibilities.missingOutputs.length - 1 && ", "}
+            </React.Fragment>
+          ))}
+        </div>,
+      );
+    }
+    if (incompatibilities.newRequiredInputs.length > 0) {
+      sections.push(
+        <div key="new-required" className="mb-1">
+          <span className="font-semibold">New required inputs: </span>
+          {incompatibilities.newRequiredInputs.map((name, i) => (
+            <React.Fragment key={name}>
+              <code className="font-mono">{name}</code>
+              {i < incompatibilities.newRequiredInputs.length - 1 && ", "}
+            </React.Fragment>
+          ))}
+        </div>,
+      );
+    }
+    if (incompatibilities.inputTypeMismatches.length > 0) {
+      sections.push(
+        <div key="type-mismatches" className="mb-1">
+          <span className="font-semibold">Type changed: </span>
+          {incompatibilities.inputTypeMismatches.map((m, i) => (
+            <React.Fragment key={m.name}>
+              <code className="font-mono">{m.name}</code>
+              <span className="text-gray-400">
+                {" "}
+                ({m.oldType} → {m.newType})
+              </span>
+              {i < incompatibilities.inputTypeMismatches.length - 1 && ", "}
+            </React.Fragment>
+          ))}
+        </div>,
+      );
+    }
+
+    return <>{sections}</>;
+  };
+
+  return (
+    <div className="flex items-center justify-between gap-2 rounded-t-xl bg-amber-50 px-3 py-2 dark:bg-amber-900/30">
+      <div className="flex items-center gap-2">
+        <WarningIcon className="h-4 w-4 text-amber-600 dark:text-amber-400" />
+        <span className="text-sm text-amber-700 dark:text-amber-300">
+          Remove incompatible connections
+        </span>
+        <Tooltip>
+          <TooltipTrigger asChild>
+            <InfoIcon className="h-4 w-4 cursor-help text-amber-500" />
+          </TooltipTrigger>
+          <TooltipContent className="max-w-sm">
+            <p className="mb-2 font-semibold">Incompatible changes:</p>
+            <div className="text-xs">{renderIncompatibilities()}</div>
+            <p className="mt-2 text-xs text-gray-400">
+              {(incompatibilities?.newRequiredInputs.length ?? 0) > 0
+                ? "Replace / delete"
+                : "Delete"}{" "}
+              the red connections to continue
+            </p>
+          </TooltipContent>
+        </Tooltip>
+      </div>
+    </div>
+  );
+}

autogpt_platform/frontend/src/app/(platform)/build/components/FlowEditor/nodes/CustomNode/components/SubAgentUpdate/useSubAgentUpdateState.ts

@@ -0,0 +1,194 @@
+import { useState, useCallback, useEffect } from "react";
+import { useShallow } from "zustand/react/shallow";
+import { useGraphStore } from "@/app/(platform)/build/stores/graphStore";
+import {
+  useNodeStore,
+  NodeResolutionData,
+} from "@/app/(platform)/build/stores/nodeStore";
+import { useEdgeStore } from "@/app/(platform)/build/stores/edgeStore";
+import {
+  useSubAgentUpdate,
+  createUpdatedAgentNodeInputs,
+  getBrokenEdgeIDs,
+} from "@/app/(platform)/build/hooks/useSubAgentUpdate";
+import { GraphInputSchema, GraphOutputSchema } from "@/lib/autogpt-server-api";
+import { CustomNodeData } from "../../CustomNode";
+
+// Stable empty set to avoid creating new references in selectors
+const EMPTY_SET: Set<string> = new Set();
+
+type UseSubAgentUpdateParams = {
+  nodeID: string;
+  nodeData: CustomNodeData;
+};
+
+export function useSubAgentUpdateState({
+  nodeID,
+  nodeData,
+}: UseSubAgentUpdateParams) {
+  const [showIncompatibilityDialog, setShowIncompatibilityDialog] =
+    useState(false);
+
+  // Get store actions
+  const updateNodeData = useNodeStore(
+    useShallow((state) => state.updateNodeData),
+  );
+  const setNodeResolutionMode = useNodeStore(
+    useShallow((state) => state.setNodeResolutionMode),
+  );
+  const isNodeInResolutionMode = useNodeStore(
+    useShallow((state) => state.isNodeInResolutionMode),
+  );
+  const setBrokenEdgeIDs = useNodeStore(
+    useShallow((state) => state.setBrokenEdgeIDs),
+  );
+  // Get this node's broken edge IDs from the per-node map
+  // Use EMPTY_SET as fallback to maintain referential stability
+  const brokenEdgeIDs = useNodeStore(
+    (state) => state.brokenEdgeIDs.get(nodeID) || EMPTY_SET,
+  );
+  const getNodeResolutionData = useNodeStore(
+    useShallow((state) => state.getNodeResolutionData),
+  );
+  const connectedEdges = useEdgeStore(
+    useShallow((state) => state.getNodeEdges(nodeID)),
+  );
+  const availableSubGraphs = useGraphStore(
+    useShallow((state) => state.availableSubGraphs),
+  );
+
+  // Extract agent-specific data
+  const graphID = nodeData.hardcodedValues?.graph_id as string | undefined;
+  const graphVersion = nodeData.hardcodedValues?.graph_version as
+    | number
+    | undefined;
+  const currentInputSchema = nodeData.hardcodedValues?.input_schema as
+    | GraphInputSchema
+    | undefined;
+  const currentOutputSchema = nodeData.hardcodedValues?.output_schema as
+    | GraphOutputSchema
+    | undefined;
+
+  // Use the sub-agent update hook
+  const updateInfo = useSubAgentUpdate(
+    nodeID,
+    graphID,
+    graphVersion,
+    currentInputSchema,
+    currentOutputSchema,
+    connectedEdges,
+    availableSubGraphs,
+  );
+
+  const isInResolutionMode = isNodeInResolutionMode(nodeID);
+
+  // Handle update button click
+  const handleUpdateClick = useCallback(() => {
+    if (!updateInfo.hasUpdate || !updateInfo.latestGraph) return;
+
+    if (updateInfo.isCompatible) {
+      // Compatible update - apply directly
+      const newHardcodedValues = createUpdatedAgentNodeInputs(
+        nodeData.hardcodedValues,
+        updateInfo.latestGraph,
+      );
+      updateNodeData(nodeID, { hardcodedValues: newHardcodedValues });
+    } else {
+      // Incompatible update - show dialog
+      setShowIncompatibilityDialog(true);
+    }
+  }, [
+    updateInfo.hasUpdate,
+    updateInfo.latestGraph,
+    updateInfo.isCompatible,
+    nodeData.hardcodedValues,
+    updateNodeData,
+    nodeID,
+  ]);
+
+  // Handle confirming an incompatible update
+  function handleConfirmIncompatibleUpdate() {
+    if (!updateInfo.latestGraph || !updateInfo.incompatibilities) return;
+
+    const latestGraph = updateInfo.latestGraph;
+
+    // Get the new schemas from the latest graph version
+    const newInputSchema =
+      (latestGraph.input_schema as Record<string, unknown>) || {};
+    const newOutputSchema =
+      (latestGraph.output_schema as Record<string, unknown>) || {};
+
+    // Create the updated hardcoded values but DON'T apply them yet
+    // We'll apply them when resolution is complete
+    const pendingHardcodedValues = createUpdatedAgentNodeInputs(
+      nodeData.hardcodedValues,
+      latestGraph,
+    );
+
+    // Get broken edge IDs and store them for this node
+    const brokenIds = getBrokenEdgeIDs(
+      connectedEdges,
+      updateInfo.incompatibilities,
+      nodeID,
+    );
+    setBrokenEdgeIDs(nodeID, brokenIds);
+
+    // Enter resolution mode with both old and new schemas
+    // DON'T apply the update yet - keep old schema so connections remain visible
+    const resolutionData: NodeResolutionData = {
+      incompatibilities: updateInfo.incompatibilities,
+      pendingUpdate: {
+        input_schema: newInputSchema,
+        output_schema: newOutputSchema,
+      },
+      currentSchema: {
+        input_schema: (currentInputSchema as Record<string, unknown>) || {},
+        output_schema: (currentOutputSchema as Record<string, unknown>) || {},
+      },
+      pendingHardcodedValues,
+    };
+    setNodeResolutionMode(nodeID, true, resolutionData);
+
+    setShowIncompatibilityDialog(false);
+  }
+
+  // Check if resolution is complete (all broken edges removed)
+  const resolutionData = getNodeResolutionData(nodeID);
+
+  // Auto-check resolution on edge changes
+  useEffect(() => {
+    if (!isInResolutionMode) return;
+
+    // Check if any broken edges still exist
+    const remainingBroken = Array.from(brokenEdgeIDs).filter((edgeId) =>
+      connectedEdges.some((e) => e.id === edgeId),
+    );
+
+    if (remainingBroken.length === 0) {
+      // Resolution complete - now apply the pending update
+      if (resolutionData?.pendingHardcodedValues) {
+        updateNodeData(nodeID, {
+          hardcodedValues: resolutionData.pendingHardcodedValues,
+        });
+      }
+      // setNodeResolutionMode will clean up this node's broken edges automatically
+      setNodeResolutionMode(nodeID, false);
+    }
+  }, [
+    isInResolutionMode,
+    brokenEdgeIDs,
+    connectedEdges,
+    resolutionData,
+    nodeID,
+  ]);
+
+  return {
+    updateInfo,
+    isInResolutionMode,
+    resolutionData,
+    showIncompatibilityDialog,
+    setShowIncompatibilityDialog,
+    handleUpdateClick,
+    handleConfirmIncompatibleUpdate,
+  };
+}

autogpt_platform/frontend/src/app/(platform)/build/components/FlowEditor/nodes/CustomNode/helpers.ts

@@ -1,4 +1,6 @@
 import { AgentExecutionStatus } from "@/app/api/__generated__/models/agentExecutionStatus";
+import { NodeResolutionData } from "@/app/(platform)/build/stores/nodeStore";
+import { RJSFSchema } from "@rjsf/utils";
 
 export const nodeStyleBasedOnStatus: Record<AgentExecutionStatus, string> = {
   INCOMPLETE: "ring-slate-300 bg-slate-300",
@@ -9,3 +11,48 @@ export const nodeStyleBasedOnStatus: Record<AgentExecutionStatus, string> = {
   TERMINATED: "ring-orange-300 bg-orange-300 ",
   FAILED: "ring-red-300 bg-red-300",
 };
+
+/**
+ * Merges schemas during resolution mode to include removed inputs/outputs
+ * that still have connections, so users can see and delete them.
+ */
+export function mergeSchemaForResolution(
+  currentSchema: Record<string, unknown>,
+  newSchema: Record<string, unknown>,
+  resolutionData: NodeResolutionData,
+  type: "input" | "output",
+): Record<string, unknown> {
+  const newProps = (newSchema.properties as RJSFSchema) || {};
+  const currentProps = (currentSchema.properties as RJSFSchema) || {};
+  const mergedProps = { ...newProps };
+  const incomp = resolutionData.incompatibilities;
+
+  if (type === "input") {
+    // Add back missing inputs that have connections
+    incomp.missingInputs.forEach((inputName: string) => {
+      if (currentProps[inputName]) {
+        mergedProps[inputName] = currentProps[inputName];
+      }
+    });
+    // Add back inputs with type mismatches (keep old type so connection works visually)
+    incomp.inputTypeMismatches.forEach(
+      (mismatch: { name: string; oldType: string; newType: string }) => {
+        if (currentProps[mismatch.name]) {
+          mergedProps[mismatch.name] = currentProps[mismatch.name];
+        }
+      },
+    );
+  } else {
+    // Add back missing outputs that have connections
+    incomp.missingOutputs.forEach((outputName: string) => {
+      if (currentProps[outputName]) {
+        mergedProps[outputName] = currentProps[outputName];
+      }
+    });
+  }
+
+  return {
+    ...newSchema,
+    properties: mergedProps,
+  };
+}

autogpt_platform/frontend/src/app/(platform)/build/components/FlowEditor/nodes/CustomNode/useCustomNode.tsx

@@ -0,0 +1,58 @@
+import { useNodeStore } from "@/app/(platform)/build/stores/nodeStore";
+import { CustomNodeData } from "./CustomNode";
+import { BlockUIType } from "../../../types";
+import { useMemo } from "react";
+import { mergeSchemaForResolution } from "./helpers";
+
+export const useCustomNode = ({
+  data,
+  nodeId,
+}: {
+  data: CustomNodeData;
+  nodeId: string;
+}) => {
+  const isInResolutionMode = useNodeStore((state) =>
+    state.nodesInResolutionMode.has(nodeId),
+  );
+  const resolutionData = useNodeStore((state) =>
+    state.nodeResolutionData.get(nodeId),
+  );
+
+  const isAgent = data.uiType === BlockUIType.AGENT;
+
+  const currentInputSchema = isAgent
+    ? (data.hardcodedValues.input_schema ?? {})
+    : data.inputSchema;
+  const currentOutputSchema = isAgent
+    ? (data.hardcodedValues.output_schema ?? {})
+    : data.outputSchema;
+
+  const inputSchema = useMemo(() => {
+    if (isAgent && isInResolutionMode && resolutionData) {
+      return mergeSchemaForResolution(
+        resolutionData.currentSchema.input_schema,
+        resolutionData.pendingUpdate.input_schema,
+        resolutionData,
+        "input",
+      );
+    }
+    return currentInputSchema;
+  }, [isAgent, isInResolutionMode, resolutionData, currentInputSchema]);
+
+  const outputSchema = useMemo(() => {
+    if (isAgent && isInResolutionMode && resolutionData) {
+      return mergeSchemaForResolution(
+        resolutionData.currentSchema.output_schema,
+        resolutionData.pendingUpdate.output_schema,
+        resolutionData,
+        "output",
+      );
+    }
+    return currentOutputSchema;
+  }, [isAgent, isInResolutionMode, resolutionData, currentOutputSchema]);
+
+  return {
+    inputSchema,
+    outputSchema,
+  };
+};

autogpt_platform/frontend/src/app/(platform)/build/components/FlowEditor/nodes/FormCreator.tsx

@@ -5,20 +5,16 @@ import { useNodeStore } from "../../../stores/nodeStore";
 import { BlockUIType } from "../../types";
 import { FormRenderer } from "@/components/renderers/InputRenderer/FormRenderer";
 
-export const FormCreator = React.memo(
+interface FormCreatorProps {
-  ({
+  jsonSchema: RJSFSchema;
-    jsonSchema,
+  nodeId: string;
-    nodeId,
+  uiType: BlockUIType;
-    uiType,
+  showHandles?: boolean;
-    showHandles = true,
+  className?: string;
-    className,
+}
-  }: {
+
-    jsonSchema: RJSFSchema;
+export const FormCreator: React.FC<FormCreatorProps> = React.memo(
-    nodeId: string;
+  ({ jsonSchema, nodeId, uiType, showHandles = true, className }) => {
-    uiType: BlockUIType;
-    showHandles?: boolean;
-    className?: string;
-  }) => {
     const updateNodeData = useNodeStore((state) => state.updateNodeData);
 
     const getHardCodedValues = useNodeStore(

autogpt_platform/frontend/src/app/(platform)/build/components/FlowEditor/nodes/OutputHandler.tsx

@@ -14,6 +14,8 @@ import {
 import { useEdgeStore } from "@/app/(platform)/build/stores/edgeStore";
 import { getTypeDisplayInfo } from "./helpers";
 import { BlockUIType } from "../../types";
+import { cn } from "@/lib/utils";
+import { useBrokenOutputs } from "./useBrokenOutputs";
 
 export const OutputHandler = ({
   outputSchema,
@@ -27,6 +29,9 @@ export const OutputHandler = ({
   const { isOutputConnected } = useEdgeStore();
   const properties = outputSchema?.properties || {};
   const [isOutputVisible, setIsOutputVisible] = useState(true);
+  const brokenOutputs = useBrokenOutputs(nodeId);
+
+  console.log("brokenOutputs", brokenOutputs);
 
   const showHandles = uiType !== BlockUIType.OUTPUT;
 
@@ -44,6 +49,7 @@ export const OutputHandler = ({
         const shouldShow = isConnected || isOutputVisible;
         const { displayType, colorClass, hexColor } =
           getTypeDisplayInfo(fieldSchema);
+        const isBroken = brokenOutputs.has(fullKey);
 
         return shouldShow ? (
           <div key={fullKey} className="flex flex-col items-end gap-2">
@@ -64,15 +70,29 @@ export const OutputHandler = ({
                   </Tooltip>
                 </TooltipProvider>
               )}
-              <Text variant="body" className="text-slate-700">
+              <Text
+                variant="body"
+                className={cn(
+                  "text-slate-700",
+                  isBroken && "text-red-500 line-through",
+                )}
+              >
                 {fieldTitle}
               </Text>
-              <Text variant="small" as="span" className={colorClass}>
+              <Text
+                variant="small"
+                as="span"
+                className={cn(
+                  colorClass,
+                  isBroken && "!text-red-500 line-through",
+                )}
+              >
                 ({displayType})
               </Text>
 
               {showHandles && (
                 <OutputNodeHandle
+                  isBroken={isBroken}
                   field_name={fullKey}
                   nodeId={nodeId}
                   hexColor={hexColor}

autogpt_platform/frontend/src/app/(platform)/build/components/FlowEditor/nodes/useBrokenOutputs.ts

@@ -0,0 +1,23 @@
+import { useMemo } from "react";
+import { useNodeStore } from "@/app/(platform)/build/stores/nodeStore";
+
+/**
+ * Hook to get the set of broken output names for a node in resolution mode.
+ */
+export function useBrokenOutputs(nodeID: string): Set<string> {
+  // Subscribe to the actual state values, not just methods
+  const isInResolution = useNodeStore((state) =>
+    state.nodesInResolutionMode.has(nodeID),
+  );
+  const resolutionData = useNodeStore((state) =>
+    state.nodeResolutionData.get(nodeID),
+  );
+
+  return useMemo(() => {
+    if (!isInResolution || !resolutionData) {
+      return new Set<string>();
+    }
+
+    return new Set(resolutionData.incompatibilities.missingOutputs);
+  }, [isInResolution, resolutionData]);
+}

autogpt_platform/frontend/src/app/(platform)/build/components/RIghtSidebar.tsx

@@ -25,7 +25,7 @@ export const RightSidebar = () => {
     >
       <div className="mb-4">
         <h2 className="text-lg font-semibold text-slate-800 dark:text-slate-200">
-          Flow Debug Panel
+          Graph Debug Panel
         </h2>
       </div>
 
@@ -65,7 +65,7 @@ export const RightSidebar = () => {
                 {l.source_id}[{l.source_name}] → {l.sink_id}[{l.sink_name}]
               </div>
               <div className="mt-1 text-slate-500 dark:text-slate-400">
-                edge_id: {l.id}
+                edge.id: {l.id}
               </div>
             </div>
           ))}

autogpt_platform/frontend/src/app/(platform)/build/components/legacy-builder/BlocksControl.tsx

@@ -12,7 +12,14 @@ import {
   PopoverContent,
   PopoverTrigger,
 } from "@/components/__legacy__/ui/popover";
-import { Block, BlockUIType, SpecialBlockID } from "@/lib/autogpt-server-api";
+import {
+  Block,
+  BlockIORootSchema,
+  BlockUIType,
+  GraphInputSchema,
+  GraphOutputSchema,
+  SpecialBlockID,
+} from "@/lib/autogpt-server-api";
 import { MagnifyingGlassIcon, PlusIcon } from "@radix-ui/react-icons";
 import { IconToyBrick } from "@/components/__legacy__/ui/icons";
 import { getPrimaryCategoryColor } from "@/lib/utils";
@@ -24,8 +31,10 @@ import {
 import { GraphMeta } from "@/lib/autogpt-server-api";
 import jaro from "jaro-winkler";
 
-type _Block = Block & {
+type _Block = Omit<Block, "inputSchema" | "outputSchema"> & {
   uiKey?: string;
+  inputSchema: BlockIORootSchema | GraphInputSchema;
+  outputSchema: BlockIORootSchema | GraphOutputSchema;
   hardcodedValues?: Record<string, any>;
   _cached?: {
     blockName: string;

autogpt_platform/frontend/src/app/(platform)/build/components/legacy-builder/BuildActionBar.tsx

@@ -2,7 +2,7 @@ import React from "react";
 import { cn } from "@/lib/utils";
 import { Button } from "@/components/__legacy__/ui/button";
 import { LogOut } from "lucide-react";
-import { ClockIcon } from "@phosphor-icons/react";
+import { ClockIcon, WarningIcon } from "@phosphor-icons/react";
 import { IconPlay, IconSquare } from "@/components/__legacy__/ui/icons";
 
 interface Props {
@@ -13,6 +13,7 @@ interface Props {
   isRunning: boolean;
   isDisabled: boolean;
   className?: string;
+  resolutionModeActive?: boolean;
 }
 
 export const BuildActionBar: React.FC<Props> = ({
@@ -23,9 +24,30 @@ export const BuildActionBar: React.FC<Props> = ({
   isRunning,
   isDisabled,
   className,
+  resolutionModeActive = false,
 }) => {
   const buttonClasses =
     "flex items-center gap-2 text-sm font-medium md:text-lg";
+
+  // Show resolution mode message instead of action buttons
+  if (resolutionModeActive) {
+    return (
+      <div
+        className={cn(
+          "flex w-fit select-none items-center justify-center p-4",
+          className,
+        )}
+      >
+        <div className="flex items-center gap-3 rounded-lg border border-amber-300 bg-amber-50 px-4 py-3 dark:border-amber-700 dark:bg-amber-900/30">
+          <WarningIcon className="size-5 text-amber-600 dark:text-amber-400" />
+          <span className="text-sm font-medium text-amber-800 dark:text-amber-200">
+            Remove incompatible connections to continue
+          </span>
+        </div>
+      </div>
+    );
+  }
+
   return (
     <div
       className={cn(

autogpt_platform/frontend/src/app/(platform)/build/components/legacy-builder/CustomEdge/CustomEdge.tsx

@@ -60,10 +60,16 @@ export function CustomEdge({
     targetY - 5,
   );
   const { deleteElements } = useReactFlow<Node, CustomEdge>();
-  const { visualizeBeads } = useContext(BuilderContext) ?? {
+  const builderContext = useContext(BuilderContext);
+  const { visualizeBeads } = builderContext ?? {
     visualizeBeads: "no",
   };
 
+  // Check if this edge is broken (during resolution mode)
+  const isBroken =
+    builderContext?.resolutionMode?.active &&
+    builderContext?.resolutionMode?.brokenEdgeIds?.includes(id);
+
   const onEdgeRemoveClick = () => {
     deleteElements({ edges: [{ id }] });
   };
@@ -171,12 +177,27 @@ export function CustomEdge({
 
   const middle = getPointForT(0.5);
 
+  // Determine edge color - red for broken edges
+  const baseColor = data?.edgeColor ?? "#555555";
+  const edgeColor = isBroken ? "#ef4444" : baseColor;
+  // Add opacity to hex color (99 = 60% opacity, 80 = 50% opacity)
+  const strokeColor = isBroken
+    ? `${edgeColor}99`
+    : selected
+      ? edgeColor
+      : `${edgeColor}80`;
+
   return (
     <>
       <BaseEdge
         path={svgPath}
         markerEnd={markerEnd}
-        className={`data-sentry-unmask transition-all duration-200 ${data?.isStatic ? "[stroke-dasharray:5_3]" : "[stroke-dasharray:0]"} [stroke-width:${data?.isStatic ? 2.5 : 2}px] hover:[stroke-width:${data?.isStatic ? 3.5 : 3}px] ${selected ? `[stroke:${data?.edgeColor ?? "#555555"}]` : `[stroke:${data?.edgeColor ?? "#555555"}80] hover:[stroke:${data?.edgeColor ?? "#555555"}]`}`}
+        style={{
+          stroke: strokeColor,
+          strokeWidth: data?.isStatic ? 2.5 : 2,
+          strokeDasharray: data?.isStatic ? "5 3" : undefined,
+        }}
+        className="data-sentry-unmask transition-all duration-200"
       />
       <path
         d={svgPath}

autogpt_platform/frontend/src/app/(platform)/build/components/legacy-builder/CustomNode/CustomNode.tsx

@@ -18,6 +18,8 @@ import {
   BlockIOSubSchema,
   BlockUIType,
   Category,
+  GraphInputSchema,
+  GraphOutputSchema,
   NodeExecutionResult,
 } from "@/lib/autogpt-server-api";
 import {
@@ -62,14 +64,21 @@ import { NodeGenericInputField, NodeTextBoxInput } from "../NodeInputs";
 import NodeOutputs from "../NodeOutputs";
 import OutputModalComponent from "../OutputModalComponent";
 import "./customnode.css";
+import { SubAgentUpdateBar } from "./SubAgentUpdateBar";
+import { IncompatibilityDialog } from "./IncompatibilityDialog";
+import {
+  useSubAgentUpdate,
+  createUpdatedAgentNodeInputs,
+  getBrokenEdgeIDs,
+} from "../../../hooks/useSubAgentUpdate";
 
-export type ConnectionData = Array<{
+export type ConnectedEdge = {
-  edge_id: string;
+  id: string;
   source: string;
   sourceHandle: string;
   target: string;
   targetHandle: string;
-}>;
+};
 
 export type CustomNodeData = {
   blockType: string;
@@ -80,7 +89,7 @@ export type CustomNodeData = {
   inputSchema: BlockIORootSchema;
   outputSchema: BlockIORootSchema;
   hardcodedValues: { [key: string]: any };
-  connections: ConnectionData;
+  connections: ConnectedEdge[];
   isOutputOpen: boolean;
   status?: NodeExecutionResult["status"];
   /** executionResults contains outputs across multiple executions
@@ -127,20 +136,199 @@ export const CustomNode = React.memo(
 
     let subGraphID = "";
 
-    if (data.uiType === BlockUIType.AGENT) {
-      // Display the graph's schema instead AgentExecutorBlock's schema.
-      data.inputSchema = data.hardcodedValues?.input_schema || {};
-      data.outputSchema = data.hardcodedValues?.output_schema || {};
-      subGraphID = data.hardcodedValues?.graph_id || subGraphID;
-    }
-
     if (!builderContext) {
       throw new Error(
         "BuilderContext consumer must be inside FlowEditor component",
       );
     }
 
-    const { libraryAgent, setIsAnyModalOpen, getNextNodeId } = builderContext;
+    const {
+      libraryAgent,
+      setIsAnyModalOpen,
+      getNextNodeId,
+      availableFlows,
+      resolutionMode,
+      enterResolutionMode,
+    } = builderContext;
+
+    // Check if this node is in resolution mode (moved up for schema merge logic)
+    const isInResolutionMode =
+      resolutionMode.active && resolutionMode.nodeId === id;
+
+    if (data.uiType === BlockUIType.AGENT) {
+      // Display the graph's schema instead AgentExecutorBlock's schema.
+      const currentInputSchema = data.hardcodedValues?.input_schema || {};
+      const currentOutputSchema = data.hardcodedValues?.output_schema || {};
+      subGraphID = data.hardcodedValues?.graph_id || subGraphID;
+
+      // During resolution mode, merge old connected inputs/outputs with new schema
+      if (isInResolutionMode && resolutionMode.pendingUpdate) {
+        const newInputSchema =
+          (resolutionMode.pendingUpdate.input_schema as BlockIORootSchema) ||
+          {};
+        const newOutputSchema =
+          (resolutionMode.pendingUpdate.output_schema as BlockIORootSchema) ||
+          {};
+
+        // Merge input schemas: start with new schema, add old connected inputs that are missing
+        const mergedInputProps = { ...newInputSchema.properties };
+        const incomp = resolutionMode.incompatibilities;
+        if (incomp && currentInputSchema.properties) {
+          // Add back missing inputs that have connections (so user can see/delete them)
+          incomp.missingInputs.forEach((inputName) => {
+            if (currentInputSchema.properties[inputName]) {
+              mergedInputProps[inputName] =
+                currentInputSchema.properties[inputName];
+            }
+          });
+          // Add back inputs with type mismatches (keep old type so connection still works visually)
+          incomp.inputTypeMismatches.forEach((mismatch) => {
+            if (currentInputSchema.properties[mismatch.name]) {
+              mergedInputProps[mismatch.name] =
+                currentInputSchema.properties[mismatch.name];
+            }
+          });
+        }
+
+        // Merge output schemas: start with new schema, add old connected outputs that are missing
+        const mergedOutputProps = { ...newOutputSchema.properties };
+        if (incomp && currentOutputSchema.properties) {
+          incomp.missingOutputs.forEach((outputName) => {
+            if (currentOutputSchema.properties[outputName]) {
+              mergedOutputProps[outputName] =
+                currentOutputSchema.properties[outputName];
+            }
+          });
+        }
+
+        data.inputSchema = {
+          ...newInputSchema,
+          properties: mergedInputProps,
+        };
+        data.outputSchema = {
+          ...newOutputSchema,
+          properties: mergedOutputProps,
+        };
+      } else {
+        data.inputSchema = currentInputSchema;
+        data.outputSchema = currentOutputSchema;
+      }
+    }
+
+    const setHardcodedValues = useCallback(
+      (values: any) => {
+        updateNodeData(id, { hardcodedValues: values });
+      },
+      [id, updateNodeData],
+    );
+
+    // Sub-agent update detection
+    const isAgentBlock = data.uiType === BlockUIType.AGENT;
+    const graphId = isAgentBlock ? data.hardcodedValues?.graph_id : undefined;
+    const graphVersion = isAgentBlock
+      ? data.hardcodedValues?.graph_version
+      : undefined;
+
+    const subAgentUpdate = useSubAgentUpdate(
+      id,
+      graphId,
+      graphVersion,
+      isAgentBlock
+        ? (data.hardcodedValues?.input_schema as GraphInputSchema)
+        : undefined,
+      isAgentBlock
+        ? (data.hardcodedValues?.output_schema as GraphOutputSchema)
+        : undefined,
+      data.connections,
+      availableFlows,
+    );
+
+    const [showIncompatibilityDialog, setShowIncompatibilityDialog] =
+      useState(false);
+
+    // Helper to check if a handle is broken (for resolution mode)
+    const isInputHandleBroken = useCallback(
+      (handleName: string): boolean => {
+        if (!isInResolutionMode || !resolutionMode.incompatibilities) {
+          return false;
+        }
+        const incomp = resolutionMode.incompatibilities;
+        return (
+          incomp.missingInputs.includes(handleName) ||
+          incomp.inputTypeMismatches.some((m) => m.name === handleName)
+        );
+      },
+      [isInResolutionMode, resolutionMode.incompatibilities],
+    );
+
+    const isOutputHandleBroken = useCallback(
+      (handleName: string): boolean => {
+        if (!isInResolutionMode || !resolutionMode.incompatibilities) {
+          return false;
+        }
+        return resolutionMode.incompatibilities.missingOutputs.includes(
+          handleName,
+        );
+      },
+      [isInResolutionMode, resolutionMode.incompatibilities],
+    );
+
+    // Handle update button click
+    const handleUpdateClick = useCallback(() => {
+      if (!subAgentUpdate.latestGraph) return;
+
+      if (subAgentUpdate.isCompatible) {
+        // Compatible update - directly apply
+        const updatedValues = createUpdatedAgentNodeInputs(
+          data.hardcodedValues,
+          subAgentUpdate.latestGraph,
+        );
+        setHardcodedValues(updatedValues);
+        toast({
+          title: "Agent updated",
+          description: `Updated to version ${subAgentUpdate.latestVersion}`,
+        });
+      } else {
+        // Incompatible update - show dialog
+        setShowIncompatibilityDialog(true);
+      }
+    }, [subAgentUpdate, data.hardcodedValues, setHardcodedValues]);
+
+    // Handle confirm incompatible update
+    const handleConfirmIncompatibleUpdate = useCallback(() => {
+      if (!subAgentUpdate.latestGraph || !subAgentUpdate.incompatibilities) {
+        return;
+      }
+
+      // Create the updated values but DON'T apply them yet
+      const updatedValues = createUpdatedAgentNodeInputs(
+        data.hardcodedValues,
+        subAgentUpdate.latestGraph,
+      );
+
+      // Get broken edge IDs
+      const brokenEdgeIds = getBrokenEdgeIDs(
+        data.connections,
+        subAgentUpdate.incompatibilities,
+        id,
+      );
+
+      // Enter resolution mode with pending update (don't apply schema yet)
+      enterResolutionMode(
+        id,
+        subAgentUpdate.incompatibilities,
+        brokenEdgeIds,
+        updatedValues,
+      );
+
+      setShowIncompatibilityDialog(false);
+    }, [
+      subAgentUpdate,
+      data.hardcodedValues,
+      data.connections,
+      id,
+      enterResolutionMode,
+    ]);
 
     useEffect(() => {
       if (data.executionResults || data.status) {
@@ -156,13 +344,6 @@ export const CustomNode = React.memo(
       setIsAnyModalOpen?.(isModalOpen || isOutputModalOpen);
     }, [isModalOpen, isOutputModalOpen, data, setIsAnyModalOpen]);
 
-    const setHardcodedValues = useCallback(
-      (values: any) => {
-        updateNodeData(id, { hardcodedValues: values });
-      },
-      [id, updateNodeData],
-    );
-
     const handleTitleEdit = useCallback(() => {
       setIsEditingTitle(true);
       setTimeout(() => {
@@ -255,6 +436,7 @@ export const CustomNode = React.memo(
                 isConnected={isOutputHandleConnected(propKey)}
                 schema={fieldSchema}
                 side="right"
+                isBroken={isOutputHandleBroken(propKey)}
               />
               {"properties" in fieldSchema &&
                 renderHandles(
@@ -385,6 +567,7 @@ export const CustomNode = React.memo(
                       isRequired={isRequired}
                       schema={propSchema}
                       side="left"
+                      isBroken={isInputHandleBroken(propKey)}
                     />
                   ) : (
                     propKey !== "credentials" &&
@@ -873,6 +1056,22 @@ export const CustomNode = React.memo(
           <ContextMenuContent />
         </div>
 
+        {/* Sub-agent Update Bar - shown below header */}
+        {isAgentBlock && (subAgentUpdate.hasUpdate || isInResolutionMode) && (
+          <SubAgentUpdateBar
+            currentVersion={subAgentUpdate.currentVersion}
+            latestVersion={subAgentUpdate.latestVersion}
+            isCompatible={subAgentUpdate.isCompatible}
+            incompatibilities={
+              isInResolutionMode
+                ? resolutionMode.incompatibilities
+                : subAgentUpdate.incompatibilities
+            }
+            onUpdate={handleUpdateClick}
+            isInResolutionMode={isInResolutionMode}
+          />
+        )}
+
         {/* Body */}
         <div className="mx-5 my-6 rounded-b-xl">
           {/* Input Handles */}
@@ -1044,9 +1243,24 @@ export const CustomNode = React.memo(
     );
 
     return (
-      <ContextMenu.Root>
+      <>
-        <ContextMenu.Trigger>{nodeContent()}</ContextMenu.Trigger>
+        <ContextMenu.Root>
-      </ContextMenu.Root>
+          <ContextMenu.Trigger>{nodeContent()}</ContextMenu.Trigger>
+        </ContextMenu.Root>
+
+        {/* Incompatibility Dialog for sub-agent updates */}
+        {isAgentBlock && subAgentUpdate.incompatibilities && (
+          <IncompatibilityDialog
+            isOpen={showIncompatibilityDialog}
+            onClose={() => setShowIncompatibilityDialog(false)}
+            onConfirm={handleConfirmIncompatibleUpdate}
+            currentVersion={subAgentUpdate.currentVersion}
+            latestVersion={subAgentUpdate.latestVersion}
+            agentName={data.blockType || "Agent"}
+            incompatibilities={subAgentUpdate.incompatibilities}
+          />
+        )}
+      </>
     );
   },
   (prevProps, nextProps) => {

autogpt_platform/frontend/src/app/(platform)/build/components/legacy-builder/CustomNode/IncompatibilityDialog.tsx

@@ -0,0 +1,244 @@
+import React from "react";
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from "@/components/__legacy__/ui/dialog";
+import { Button } from "@/components/__legacy__/ui/button";
+import { AlertTriangle, XCircle, PlusCircle } from "lucide-react";
+import { IncompatibilityInfo } from "../../../hooks/useSubAgentUpdate/types";
+import { beautifyString } from "@/lib/utils";
+import { Alert, AlertDescription } from "@/components/molecules/Alert/Alert";
+
+interface IncompatibilityDialogProps {
+  isOpen: boolean;
+  onClose: () => void;
+  onConfirm: () => void;
+  currentVersion: number;
+  latestVersion: number;
+  agentName: string;
+  incompatibilities: IncompatibilityInfo;
+}
+
+export const IncompatibilityDialog: React.FC<IncompatibilityDialogProps> = ({
+  isOpen,
+  onClose,
+  onConfirm,
+  currentVersion,
+  latestVersion,
+  agentName,
+  incompatibilities,
+}) => {
+  const hasMissingInputs = incompatibilities.missingInputs.length > 0;
+  const hasMissingOutputs = incompatibilities.missingOutputs.length > 0;
+  const hasNewInputs = incompatibilities.newInputs.length > 0;
+  const hasNewOutputs = incompatibilities.newOutputs.length > 0;
+  const hasNewRequired = incompatibilities.newRequiredInputs.length > 0;
+  const hasTypeMismatches = incompatibilities.inputTypeMismatches.length > 0;
+
+  const hasInputChanges = hasMissingInputs || hasNewInputs;
+  const hasOutputChanges = hasMissingOutputs || hasNewOutputs;
+
+  return (
+    <Dialog open={isOpen} onOpenChange={(open) => !open && onClose()}>
+      <DialogContent className="max-w-lg">
+        <DialogHeader>
+          <DialogTitle className="flex items-center gap-2">
+            <AlertTriangle className="h-5 w-5 text-amber-500" />
+            Incompatible Update
+          </DialogTitle>
+          <DialogDescription>
+            Updating <strong>{beautifyString(agentName)}</strong> from v
+            {currentVersion} to v{latestVersion} will break some connections.
+          </DialogDescription>
+        </DialogHeader>
+
+        <div className="space-y-4 py-2">
+          {/* Input changes - two column layout */}
+          {hasInputChanges && (
+            <TwoColumnSection
+              title="Input Changes"
+              leftIcon={<XCircle className="h-4 w-4 text-red-500" />}
+              leftTitle="Removed"
+              leftItems={incompatibilities.missingInputs}
+              rightIcon={<PlusCircle className="h-4 w-4 text-green-500" />}
+              rightTitle="Added"
+              rightItems={incompatibilities.newInputs}
+            />
+          )}
+
+          {/* Output changes - two column layout */}
+          {hasOutputChanges && (
+            <TwoColumnSection
+              title="Output Changes"
+              leftIcon={<XCircle className="h-4 w-4 text-red-500" />}
+              leftTitle="Removed"
+              leftItems={incompatibilities.missingOutputs}
+              rightIcon={<PlusCircle className="h-4 w-4 text-green-500" />}
+              rightTitle="Added"
+              rightItems={incompatibilities.newOutputs}
+            />
+          )}
+
+          {hasTypeMismatches && (
+            <SingleColumnSection
+              icon={<XCircle className="h-4 w-4 text-red-500" />}
+              title="Type Changed"
+              description="These connected inputs have a different type:"
+              items={incompatibilities.inputTypeMismatches.map(
+                (m) => `${m.name} (${m.oldType} → ${m.newType})`,
+              )}
+            />
+          )}
+
+          {hasNewRequired && (
+            <SingleColumnSection
+              icon={<PlusCircle className="h-4 w-4 text-amber-500" />}
+              title="New Required Inputs"
+              description="These inputs are now required:"
+              items={incompatibilities.newRequiredInputs}
+            />
+          )}
+        </div>
+
+        <Alert variant="warning">
+          <AlertDescription>
+            If you proceed, you&apos;ll need to remove the broken connections
+            before you can save or run your agent.
+          </AlertDescription>
+        </Alert>
+
+        <DialogFooter className="gap-2 sm:gap-0">
+          <Button variant="outline" onClick={onClose}>
+            Cancel
+          </Button>
+          <Button
+            variant="destructive"
+            onClick={onConfirm}
+            className="bg-amber-600 hover:bg-amber-700"
+          >
+            Update Anyway
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+};
+
+interface TwoColumnSectionProps {
+  title: string;
+  leftIcon: React.ReactNode;
+  leftTitle: string;
+  leftItems: string[];
+  rightIcon: React.ReactNode;
+  rightTitle: string;
+  rightItems: string[];
+}
+
+const TwoColumnSection: React.FC<TwoColumnSectionProps> = ({
+  title,
+  leftIcon,
+  leftTitle,
+  leftItems,
+  rightIcon,
+  rightTitle,
+  rightItems,
+}) => (
+  <div className="rounded-md border border-gray-200 p-3 dark:border-gray-700">
+    <span className="font-medium">{title}</span>
+    <div className="mt-2 grid grid-cols-2 items-start gap-4">
+      {/* Left column - Breaking changes */}
+      <div className="min-w-0">
+        <div className="flex items-center gap-1.5 text-sm text-gray-500 dark:text-gray-400">
+          {leftIcon}
+          <span>{leftTitle}</span>
+        </div>
+        <ul className="mt-1.5 space-y-1">
+          {leftItems.length > 0 ? (
+            leftItems.map((item) => (
+              <li
+                key={item}
+                className="text-sm text-gray-700 dark:text-gray-300"
+              >
+                <code className="rounded bg-red-50 px-1 py-0.5 font-mono text-xs text-red-700 dark:bg-red-900/30 dark:text-red-300">
+                  {item}
+                </code>
+              </li>
+            ))
+          ) : (
+            <li className="text-sm italic text-gray-400 dark:text-gray-500">
+              None
+            </li>
+          )}
+        </ul>
+      </div>
+
+      {/* Right column - Possible solutions */}
+      <div className="min-w-0">
+        <div className="flex items-center gap-1.5 text-sm text-gray-500 dark:text-gray-400">
+          {rightIcon}
+          <span>{rightTitle}</span>
+        </div>
+        <ul className="mt-1.5 space-y-1">
+          {rightItems.length > 0 ? (
+            rightItems.map((item) => (
+              <li
+                key={item}
+                className="text-sm text-gray-700 dark:text-gray-300"
+              >
+                <code className="rounded bg-green-50 px-1 py-0.5 font-mono text-xs text-green-700 dark:bg-green-900/30 dark:text-green-300">
+                  {item}
+                </code>
+              </li>
+            ))
+          ) : (
+            <li className="text-sm italic text-gray-400 dark:text-gray-500">
+              None
+            </li>
+          )}
+        </ul>
+      </div>
+    </div>
+  </div>
+);
+
+interface SingleColumnSectionProps {
+  icon: React.ReactNode;
+  title: string;
+  description: string;
+  items: string[];
+}
+
+const SingleColumnSection: React.FC<SingleColumnSectionProps> = ({
+  icon,
+  title,
+  description,
+  items,
+}) => (
+  <div className="rounded-md border border-gray-200 p-3 dark:border-gray-700">
+    <div className="flex items-center gap-2">
+      {icon}
+      <span className="font-medium">{title}</span>
+    </div>
+    <p className="mt-1 text-sm text-gray-500 dark:text-gray-400">
+      {description}
+    </p>
+    <ul className="mt-2 space-y-1">
+      {items.map((item) => (
+        <li
+          key={item}
+          className="ml-4 list-disc text-sm text-gray-700 dark:text-gray-300"
+        >
+          <code className="rounded bg-gray-100 px-1 py-0.5 font-mono text-xs dark:bg-gray-800">
+            {item}
+          </code>
+        </li>
+      ))}
+    </ul>
+  </div>
+);
+
+export default IncompatibilityDialog;

autogpt_platform/frontend/src/app/(platform)/build/components/legacy-builder/CustomNode/SubAgentUpdateBar.tsx

@@ -0,0 +1,130 @@
+import React from "react";
+import { Button } from "@/components/__legacy__/ui/button";
+import { ArrowUp, AlertTriangle, Info } from "lucide-react";
+import {
+  Tooltip,
+  TooltipContent,
+  TooltipTrigger,
+} from "@/components/atoms/Tooltip/BaseTooltip";
+import { IncompatibilityInfo } from "../../../hooks/useSubAgentUpdate/types";
+import { cn } from "@/lib/utils";
+
+interface SubAgentUpdateBarProps {
+  currentVersion: number;
+  latestVersion: number;
+  isCompatible: boolean;
+  incompatibilities: IncompatibilityInfo | null;
+  onUpdate: () => void;
+  isInResolutionMode?: boolean;
+}
+
+export const SubAgentUpdateBar: React.FC<SubAgentUpdateBarProps> = ({
+  currentVersion,
+  latestVersion,
+  isCompatible,
+  incompatibilities,
+  onUpdate,
+  isInResolutionMode = false,
+}) => {
+  if (isInResolutionMode) {
+    return <ResolutionModeBar incompatibilities={incompatibilities} />;
+  }
+
+  return (
+    <div className="flex items-center justify-between gap-2 rounded-t-lg bg-blue-50 px-3 py-2 dark:bg-blue-900/30">
+      <div className="flex items-center gap-2">
+        <ArrowUp className="h-4 w-4 text-blue-600 dark:text-blue-400" />
+        <span className="text-sm text-blue-700 dark:text-blue-300">
+          Update available (v{currentVersion} → v{latestVersion})
+        </span>
+        {!isCompatible && (
+          <Tooltip>
+            <TooltipTrigger asChild>
+              <AlertTriangle className="h-4 w-4 text-amber-500" />
+            </TooltipTrigger>
+            <TooltipContent className="max-w-xs">
+              <p className="font-medium">Incompatible changes detected</p>
+              <p className="text-xs text-gray-400">
+                Click Update to see details
+              </p>
+            </TooltipContent>
+          </Tooltip>
+        )}
+      </div>
+      <Button
+        size="sm"
+        variant={isCompatible ? "default" : "outline"}
+        onClick={onUpdate}
+        className={cn(
+          "h-7 text-xs",
+          !isCompatible && "border-amber-500 text-amber-600 hover:bg-amber-50",
+        )}
+      >
+        Update
+      </Button>
+    </div>
+  );
+};
+
+interface ResolutionModeBarProps {
+  incompatibilities: IncompatibilityInfo | null;
+}
+
+const ResolutionModeBar: React.FC<ResolutionModeBarProps> = ({
+  incompatibilities,
+}) => {
+  const formatIncompatibilities = () => {
+    if (!incompatibilities) return "No incompatibilities";
+
+    const items: string[] = [];
+
+    if (incompatibilities.missingInputs.length > 0) {
+      items.push(
+        `Missing inputs: ${incompatibilities.missingInputs.join(", ")}`,
+      );
+    }
+    if (incompatibilities.missingOutputs.length > 0) {
+      items.push(
+        `Missing outputs: ${incompatibilities.missingOutputs.join(", ")}`,
+      );
+    }
+    if (incompatibilities.newRequiredInputs.length > 0) {
+      items.push(
+        `New required inputs: ${incompatibilities.newRequiredInputs.join(", ")}`,
+      );
+    }
+    if (incompatibilities.inputTypeMismatches.length > 0) {
+      const mismatches = incompatibilities.inputTypeMismatches
+        .map((m) => `${m.name} (${m.oldType} → ${m.newType})`)
+        .join(", ");
+      items.push(`Type changed: ${mismatches}`);
+    }
+
+    return items.join("\n");
+  };
+
+  return (
+    <div className="flex items-center justify-between gap-2 rounded-t-lg bg-amber-50 px-3 py-2 dark:bg-amber-900/30">
+      <div className="flex items-center gap-2">
+        <AlertTriangle className="h-4 w-4 text-amber-600 dark:text-amber-400" />
+        <span className="text-sm text-amber-700 dark:text-amber-300">
+          Remove incompatible connections
+        </span>
+        <Tooltip>
+          <TooltipTrigger asChild>
+            <Info className="h-4 w-4 cursor-help text-amber-500" />
+          </TooltipTrigger>
+          <TooltipContent className="max-w-sm whitespace-pre-line">
+            <p className="font-medium">Incompatible changes:</p>
+            <p className="mt-1 text-xs">{formatIncompatibilities()}</p>
+            <p className="mt-2 text-xs text-gray-400">
+              Delete the red connections to continue
+            </p>
+          </TooltipContent>
+        </Tooltip>
+      </div>
+    </div>
+  );
+};
+
+export default SubAgentUpdateBar;

autogpt_platform/frontend/src/app/(platform)/build/components/legacy-builder/Flow/Flow.tsx

@@ -26,15 +26,17 @@ import {
   applyNodeChanges,
 } from "@xyflow/react";
 import "@xyflow/react/dist/style.css";
-import { CustomNode } from "../CustomNode/CustomNode";
+import { ConnectedEdge, CustomNode } from "../CustomNode/CustomNode";
 import "./flow.css";
 import {
   BlockUIType,
   formatEdgeID,
   GraphExecutionID,
   GraphID,
+  GraphMeta,
   LibraryAgent,
 } from "@/lib/autogpt-server-api";
+import { IncompatibilityInfo } from "../../../hooks/useSubAgentUpdate/types";
 import { Key, storage } from "@/services/storage/local-storage";
 import { findNewlyAddedBlockCoordinates, getTypeColor } from "@/lib/utils";
 import { history } from "../history";
@@ -72,12 +74,30 @@ import { FloatingSafeModeToggle } from "../../FloatingSafeModeToogle";
 // It helps to prevent spamming the history with small movements especially when pressing on a input in a block
 const MINIMUM_MOVE_BEFORE_LOG = 50;
 
+export type ResolutionModeState = {
+  active: boolean;
+  nodeId: string | null;
+  incompatibilities: IncompatibilityInfo | null;
+  brokenEdgeIds: string[];
+  pendingUpdate: Record<string, unknown> | null; // The hardcoded values to apply after resolution
+};
+
 type BuilderContextType = {
   libraryAgent: LibraryAgent | null;
   visualizeBeads: "no" | "static" | "animate";
   setIsAnyModalOpen: (isOpen: boolean) => void;
   getNextNodeId: () => string;
   getNodeTitle: (nodeID: string) => string | null;
+  availableFlows: GraphMeta[];
+  resolutionMode: ResolutionModeState;
+  enterResolutionMode: (
+    nodeId: string,
+    incompatibilities: IncompatibilityInfo,
+    brokenEdgeIds: string[],
+    pendingUpdate: Record<string, unknown>,
+  ) => void;
+  exitResolutionMode: () => void;
+  applyPendingUpdate: () => void;
 };
 
 export type NodeDimension = {
@@ -172,6 +192,92 @@ const FlowEditor: React.FC<{
   // It stores the dimension of all nodes with position as well
   const [nodeDimensions, setNodeDimensions] = useState<NodeDimension>({});
 
+  // Resolution mode state for sub-agent incompatible updates
+  const [resolutionMode, setResolutionMode] = useState<ResolutionModeState>({
+    active: false,
+    nodeId: null,
+    incompatibilities: null,
+    brokenEdgeIds: [],
+    pendingUpdate: null,
+  });
+
+  const enterResolutionMode = useCallback(
+    (
+      nodeId: string,
+      incompatibilities: IncompatibilityInfo,
+      brokenEdgeIds: string[],
+      pendingUpdate: Record<string, unknown>,
+    ) => {
+      setResolutionMode({
+        active: true,
+        nodeId,
+        incompatibilities,
+        brokenEdgeIds,
+        pendingUpdate,
+      });
+    },
+    [],
+  );
+
+  const exitResolutionMode = useCallback(() => {
+    setResolutionMode({
+      active: false,
+      nodeId: null,
+      incompatibilities: null,
+      brokenEdgeIds: [],
+      pendingUpdate: null,
+    });
+  }, []);
+
+  // Apply pending update after resolution mode completes
+  const applyPendingUpdate = useCallback(() => {
+    if (!resolutionMode.nodeId || !resolutionMode.pendingUpdate) return;
+
+    const node = nodes.find((n) => n.id === resolutionMode.nodeId);
+    if (node) {
+      const pendingUpdate = resolutionMode.pendingUpdate as {
+        [key: string]: any;
+      };
+      setNodes((nds) =>
+        nds.map((n) =>
+          n.id === resolutionMode.nodeId
+            ? { ...n, data: { ...n.data, hardcodedValues: pendingUpdate } }
+            : n,
+        ),
+      );
+    }
+    exitResolutionMode();
+    toast({
+      title: "Update complete",
+      description: "Agent has been updated to the new version.",
+    });
+  }, [resolutionMode, nodes, setNodes, exitResolutionMode, toast]);
+
+  // Check if all broken edges have been removed and auto-apply pending update
+  useEffect(() => {
+    if (!resolutionMode.active || resolutionMode.brokenEdgeIds.length === 0) {
+      return;
+    }
+
+    const currentEdgeIds = new Set(edges.map((e) => e.id));
+    const remainingBrokenEdges = resolutionMode.brokenEdgeIds.filter((id) =>
+      currentEdgeIds.has(id),
+    );
+
+    if (remainingBrokenEdges.length === 0) {
+      // All broken edges have been removed, apply pending update
+      applyPendingUpdate();
+    } else if (
+      remainingBrokenEdges.length !== resolutionMode.brokenEdgeIds.length
+    ) {
+      // Update the list of broken edges
+      setResolutionMode((prev) => ({
+        ...prev,
+        brokenEdgeIds: remainingBrokenEdges,
+      }));
+    }
+  }, [edges, resolutionMode, applyPendingUpdate]);
+
   // Set page title with or without graph name
   useEffect(() => {
     document.title = savedAgent
@@ -431,17 +537,19 @@ const FlowEditor: React.FC<{
                 ...node.data.connections.filter(
                   (conn) =>
                     !removedEdges.some(
-                      (removedEdge) => removedEdge.id === conn.edge_id,
+                      (removedEdge) => removedEdge.id === conn.id,
                     ),
                 ),
                 // Add node connections for added edges
-                ...addedEdges.map((addedEdge) => ({
+                ...addedEdges.map(
-                  edge_id: addedEdge.item.id,
+                  (addedEdge): ConnectedEdge => ({
-                  source: addedEdge.item.source,
+                    id: addedEdge.item.id,
-                  target: addedEdge.item.target,
+                    source: addedEdge.item.source,
-                  sourceHandle: addedEdge.item.sourceHandle!,
+                    target: addedEdge.item.target,
-                  targetHandle: addedEdge.item.targetHandle!,
+                    sourceHandle: addedEdge.item.sourceHandle!,
-                })),
+                    targetHandle: addedEdge.item.targetHandle!,
+                  }),
+                ),
               ],
             },
           }));
@@ -467,13 +575,15 @@ const FlowEditor: React.FC<{
             data: {
               ...node.data,
               connections: [
-                ...replaceEdges.map((replaceEdge) => ({
+                ...replaceEdges.map(
-                  edge_id: replaceEdge.item.id,
+                  (replaceEdge): ConnectedEdge => ({
-                  source: replaceEdge.item.source,
+                    id: replaceEdge.item.id,
-                  target: replaceEdge.item.target,
+                    source: replaceEdge.item.source,
-                  sourceHandle: replaceEdge.item.sourceHandle!,
+                    target: replaceEdge.item.target,
-                  targetHandle: replaceEdge.item.targetHandle!,
+                    sourceHandle: replaceEdge.item.sourceHandle!,
-                })),
+                    targetHandle: replaceEdge.item.targetHandle!,
+                  }),
+                ),
               ],
             },
           })),
@@ -890,8 +1000,23 @@ const FlowEditor: React.FC<{
       setIsAnyModalOpen,
       getNextNodeId,
       getNodeTitle,
+      availableFlows,
+      resolutionMode,
+      enterResolutionMode,
+      exitResolutionMode,
+      applyPendingUpdate,
     }),
-    [libraryAgent, visualizeBeads, getNextNodeId, getNodeTitle],
+    [
+      libraryAgent,
+      visualizeBeads,
+      getNextNodeId,
+      getNodeTitle,
+      availableFlows,
+      resolutionMode,
+      enterResolutionMode,
+      applyPendingUpdate,
+      exitResolutionMode,
+    ],
   );
 
   return (
@@ -991,6 +1116,7 @@ const FlowEditor: React.FC<{
               onClickScheduleButton={handleScheduleButton}
               isDisabled={!savedAgent}
               isRunning={isRunning}
+              resolutionModeActive={resolutionMode.active}
             />
           ) : (
             <Alert className="absolute bottom-4 left-1/2 z-20 w-auto -translate-x-1/2 select-none">

autogpt_platform/frontend/src/app/(platform)/build/components/legacy-builder/NodeHandle.tsx

@@ -1,6 +1,11 @@
 import { BlockIOSubSchema } from "@/lib/autogpt-server-api/types";
-import { cn } from "@/lib/utils";
+import {
-import { beautifyString, getTypeBgColor, getTypeTextColor } from "@/lib/utils";
+  cn,
+  beautifyString,
+  getTypeBgColor,
+  getTypeTextColor,
+  getEffectiveType,
+} from "@/lib/utils";
 import { FC, memo, useCallback } from "react";
 import { Handle, Position } from "@xyflow/react";
 import { InformationTooltip } from "@/components/molecules/InformationTooltip/InformationTooltip";
@@ -13,6 +18,7 @@ type HandleProps = {
   side: "left" | "right";
   title?: string;
   className?: string;
+  isBroken?: boolean;
 };
 
 // Move the constant out of the component to avoid re-creation on every render.
@@ -27,18 +33,23 @@ const TYPE_NAME: Record<string, string> = {
 };
 
 // Extract and memoize the Dot component so that it doesn't re-render unnecessarily.
-const Dot: FC<{ isConnected: boolean; type?: string }> = memo(
+const Dot: FC<{ isConnected: boolean; type?: string; isBroken?: boolean }> =
-  ({ isConnected, type }) => {
+  memo(({ isConnected, type, isBroken }) => {
-    const color = isConnected
+    const color = isBroken
-      ? getTypeBgColor(type || "any")
+      ? "border-red-500 bg-red-100 dark:bg-red-900/30"
-      : "border-gray-300 dark:border-gray-600";
+      : isConnected
+        ? getTypeBgColor(type || "any")
+        : "border-gray-300 dark:border-gray-600";
     return (
       <div
-        className={`${color} m-1 h-4 w-4 rounded-full border-2 bg-white transition-colors duration-100 group-hover:bg-gray-300 dark:bg-slate-800 dark:group-hover:bg-gray-700`}
+        className={cn(
+          "m-1 h-4 w-4 rounded-full border-2 bg-white transition-colors duration-100 group-hover:bg-gray-300 dark:bg-slate-800 dark:group-hover:bg-gray-700",
+          color,
+          isBroken && "opacity-50",
+        )}
       />
     );
-  },
+  });
-);
 Dot.displayName = "Dot";
 
 const NodeHandle: FC<HandleProps> = ({
@@ -49,24 +60,34 @@ const NodeHandle: FC<HandleProps> = ({
   side,
   title,
   className,
+  isBroken = false,
 }) => {
-  const typeClass = `text-sm ${getTypeTextColor(schema.type || "any")} ${
+  // Extract effective type from schema (handles anyOf/oneOf/allOf wrappers)
+  const effectiveType = getEffectiveType(schema);
+
+  const typeClass = `text-sm ${getTypeTextColor(effectiveType || "any")} ${
     side === "left" ? "text-left" : "text-right"
   }`;
 
   const label = (
-    <div className="flex flex-grow flex-row">
+    <div className={cn("flex flex-grow flex-row", isBroken && "opacity-50")}>
       <span
         className={cn(
           "data-sentry-unmask text-m green flex items-end pr-2 text-gray-900 dark:text-gray-100",
           className,
+          isBroken && "text-red-500 line-through",
         )}
       >
         {title || schema.title || beautifyString(keyName.toLowerCase())}
         {isRequired ? "*" : ""}
       </span>
-      <span className={`${typeClass} data-sentry-unmask flex items-end`}>
+      <span
-        ({TYPE_NAME[schema.type as keyof typeof TYPE_NAME] || "any"})
+        className={cn(
+          `${typeClass} data-sentry-unmask flex items-end`,
+          isBroken && "text-red-400",
+        )}
+      >
+        ({TYPE_NAME[effectiveType as keyof typeof TYPE_NAME] || "any"})
       </span>
     </div>
   );
@@ -84,7 +105,7 @@ const NodeHandle: FC<HandleProps> = ({
     return (
       <div
         key={keyName}
-        className="handle-container"
+        className={cn("handle-container", isBroken && "pointer-events-none")}
         onContextMenu={handleContextMenu}
       >
         <Handle
@@ -92,10 +113,15 @@ const NodeHandle: FC<HandleProps> = ({
           data-testid={`input-handle-${keyName}`}
           position={Position.Left}
           id={keyName}
-          className="group -ml-[38px]"
+          className={cn("group -ml-[38px]", isBroken && "cursor-not-allowed")}
+          isConnectable={!isBroken}
         >
           <div className="pointer-events-none flex items-center">
-            <Dot isConnected={isConnected} type={schema.type} />
+            <Dot
+              isConnected={isConnected}
+              type={effectiveType}
+              isBroken={isBroken}
+            />
             {label}
           </div>
         </Handle>
@@ -106,7 +132,10 @@ const NodeHandle: FC<HandleProps> = ({
     return (
       <div
         key={keyName}
-        className="handle-container justify-end"
+        className={cn(
+          "handle-container justify-end",
+          isBroken && "pointer-events-none",
+        )}
         onContextMenu={handleContextMenu}
       >
         <Handle
@@ -114,11 +143,16 @@ const NodeHandle: FC<HandleProps> = ({
           data-testid={`output-handle-${keyName}`}
           position={Position.Right}
           id={keyName}
-          className="group -mr-[38px]"
+          className={cn("group -mr-[38px]", isBroken && "cursor-not-allowed")}
+          isConnectable={!isBroken}
         >
           <div className="pointer-events-none flex items-center">
             {label}
-            <Dot isConnected={isConnected} type={schema.type} />
+            <Dot
+              isConnected={isConnected}
+              type={effectiveType}
+              isBroken={isBroken}
+            />
           </div>
         </Handle>
       </div>

autogpt_platform/frontend/src/app/(platform)/build/components/legacy-builder/NodeInputs.tsx

@@ -1,5 +1,5 @@
 import {
-  ConnectionData,
+  ConnectedEdge,
   CustomNodeData,
 } from "@/app/(platform)/build/components/legacy-builder/CustomNode/CustomNode";
 import { NodeTableInput } from "@/app/(platform)/build/components/legacy-builder/NodeTableInput";
@@ -65,7 +65,7 @@ type NodeObjectInputTreeProps = {
   selfKey?: string;
   schema: BlockIORootSchema | BlockIOObjectSubSchema;
   object?: { [key: string]: any };
-  connections: ConnectionData;
+  connections: ConnectedEdge[];
   handleInputClick: (key: string) => void;
   handleInputChange: (key: string, value: any) => void;
   errors: { [key: string]: string | undefined };
@@ -585,7 +585,7 @@ const NodeOneOfDiscriminatorField: FC<{
   currentValue?: any;
   defaultValue?: any;
   errors: { [key: string]: string | undefined };
-  connections: ConnectionData;
+  connections: ConnectedEdge[];
   handleInputChange: (key: string, value: any) => void;
   handleInputClick: (key: string) => void;
   className?: string;

autogpt_platform/frontend/src/app/(platform)/build/components/legacy-builder/NodeTableInput.tsx

@@ -1,15 +1,16 @@
 import { FC, useCallback, useEffect, useState } from "react";
 
 import NodeHandle from "@/app/(platform)/build/components/legacy-builder/NodeHandle";
-import {
+import type {
   BlockIOTableSubSchema,
   TableCellValue,
   TableRow,
 } from "@/lib/autogpt-server-api/types";
+import type { ConnectedEdge } from "./CustomNode/CustomNode";
 import { cn } from "@/lib/utils";
 import { PlusIcon, XIcon } from "@phosphor-icons/react";
-import { Button } from "../../../../../components/atoms/Button/Button";
+import { Button } from "@/components/atoms/Button/Button";
-import { Input } from "../../../../../components/atoms/Input/Input";
+import { Input } from "@/components/atoms/Input/Input";
 
 interface NodeTableInputProps {
   /** Unique identifier for the node in the builder graph */
@@ -25,13 +26,7 @@ interface NodeTableInputProps {
   /** Validation errors mapped by field key */
   errors: { [key: string]: string | undefined };
   /** Graph connections between nodes in the builder */
-  connections: {
+  connections: ConnectedEdge[];
-    edge_id: string;
-    source: string;
-    sourceHandle: string;
-    target: string;
-    targetHandle: string;
-  }[];
   /** Callback when table data changes */
   handleInputChange: (key: string, value: TableRow[]) => void;
   /** Callback when input field is clicked (for builder selection) */

autogpt_platform/frontend/src/app/(platform)/build/components/legacy-builder/useCopyPaste.ts

@@ -1,6 +1,7 @@
 import { useCallback } from "react";
 import { Node, Edge, useReactFlow } from "@xyflow/react";
 import { Key, storage } from "@/services/storage/local-storage";
+import { ConnectedEdge } from "./CustomNode/CustomNode";
 
 interface CopyableData {
   nodes: Node[];
@@ -111,13 +112,15 @@ export function useCopyPaste(getNextNodeId: () => string) {
                     (edge: Edge) =>
                       edge.source === node.id || edge.target === node.id,
                   )
-                  .map((edge: Edge) => ({
+                  .map(
-                    edge_id: edge.id,
+                    (edge: Edge): ConnectedEdge => ({
-                    source: edge.source,
+                      id: edge.id,
-                    target: edge.target,
+                      source: edge.source,
-                    sourceHandle: edge.sourceHandle,
+                      target: edge.target,
-                    targetHandle: edge.targetHandle,
+                      sourceHandle: edge.sourceHandle!,
-                  }));
+                      targetHandle: edge.targetHandle!,
+                    }),
+                  );
 
                 return {
                   ...node,

autogpt_platform/frontend/src/app/(platform)/build/hooks/useSubAgentUpdate/helpers.ts

@@ -0,0 +1,104 @@
+import { GraphInputSchema } from "@/lib/autogpt-server-api";
+import { GraphMetaLike, IncompatibilityInfo } from "./types";
+
+// Helper type for schema properties - the generated types are too loose
+type SchemaProperties = Record<string, GraphInputSchema["properties"][string]>;
+type SchemaRequired = string[];
+
+// Helper to safely extract schema properties
+export function getSchemaProperties(schema: unknown): SchemaProperties {
+  if (
+    schema &&
+    typeof schema === "object" &&
+    "properties" in schema &&
+    typeof schema.properties === "object" &&
+    schema.properties !== null
+  ) {
+    return schema.properties as SchemaProperties;
+  }
+  return {};
+}
+
+export function getSchemaRequired(schema: unknown): SchemaRequired {
+  if (
+    schema &&
+    typeof schema === "object" &&
+    "required" in schema &&
+    Array.isArray(schema.required)
+  ) {
+    return schema.required as SchemaRequired;
+  }
+  return [];
+}
+
+/**
+ * Creates the updated agent node inputs for a sub-agent node
+ */
+export function createUpdatedAgentNodeInputs(
+  currentInputs: Record<string, unknown>,
+  latestSubGraphVersion: GraphMetaLike,
+): Record<string, unknown> {
+  return {
+    ...currentInputs,
+    graph_version: latestSubGraphVersion.version,
+    input_schema: latestSubGraphVersion.input_schema,
+    output_schema: latestSubGraphVersion.output_schema,
+  };
+}
+
+/** Generic edge type that works with both builders:
+ *  - New builder uses CustomEdge with (formally) optional handles
+ *  - Legacy builder uses ConnectedEdge type with required handles */
+export type EdgeLike = {
+  id: string;
+  source: string;
+  target: string;
+  sourceHandle?: string | null;
+  targetHandle?: string | null;
+};
+
+/**
+ * Determines which edges are broken after an incompatible update.
+ * Works with both legacy ConnectedEdge and new CustomEdge.
+ */
+export function getBrokenEdgeIDs(
+  connections: EdgeLike[],
+  incompatibilities: IncompatibilityInfo,
+  nodeID: string,
+): string[] {
+  const brokenEdgeIDs: string[] = [];
+  const typeMismatchInputNames = new Set(
+    incompatibilities.inputTypeMismatches.map((m) => m.name),
+  );
+
+  connections.forEach((conn) => {
+    // Check if this connection uses a missing input (node is target)
+    if (
+      conn.target === nodeID &&
+      conn.targetHandle &&
+      incompatibilities.missingInputs.includes(conn.targetHandle)
+    ) {
+      brokenEdgeIDs.push(conn.id);
+    }
+
+    // Check if this connection uses an input with a type mismatch (node is target)
+    if (
+      conn.target === nodeID &&
+      conn.targetHandle &&
+      typeMismatchInputNames.has(conn.targetHandle)
+    ) {
+      brokenEdgeIDs.push(conn.id);
+    }
+
+    // Check if this connection uses a missing output (node is source)
+    if (
+      conn.source === nodeID &&
+      conn.sourceHandle &&
+      incompatibilities.missingOutputs.includes(conn.sourceHandle)
+    ) {
+      brokenEdgeIDs.push(conn.id);
+    }
+  });
+
+  return brokenEdgeIDs;
+}

autogpt_platform/frontend/src/app/(platform)/build/hooks/useSubAgentUpdate/index.ts

@@ -0,0 +1,2 @@
+export { useSubAgentUpdate } from "./useSubAgentUpdate";
+export { createUpdatedAgentNodeInputs, getBrokenEdgeIDs } from "./helpers";

autogpt_platform/frontend/src/app/(platform)/build/hooks/useSubAgentUpdate/types.ts

@@ -0,0 +1,27 @@
+import type { GraphMeta as LegacyGraphMeta } from "@/lib/autogpt-server-api";
+import type { GraphMeta as GeneratedGraphMeta } from "@/app/api/__generated__/models/graphMeta";
+
+export type SubAgentUpdateInfo<T extends GraphMetaLike = GraphMetaLike> = {
+  hasUpdate: boolean;
+  currentVersion: number;
+  latestVersion: number;
+  latestGraph: T | null;
+  isCompatible: boolean;
+  incompatibilities: IncompatibilityInfo | null;
+};
+
+// Union type for GraphMeta that works with both legacy and new builder
+export type GraphMetaLike = LegacyGraphMeta | GeneratedGraphMeta;
+
+export type IncompatibilityInfo = {
+  missingInputs: string[]; // Connected inputs that no longer exist
+  missingOutputs: string[]; // Connected outputs that no longer exist
+  newInputs: string[]; // Inputs that exist in new version but not in current
+  newOutputs: string[]; // Outputs that exist in new version but not in current
+  newRequiredInputs: string[]; // New required inputs not in current version or not required
+  inputTypeMismatches: Array<{
+    name: string;
+    oldType: string;
+    newType: string;
+  }>; // Connected inputs where the type has changed
+};

autogpt_platform/frontend/src/app/(platform)/build/hooks/useSubAgentUpdate/useSubAgentUpdate.ts

@@ -0,0 +1,160 @@
+import { useMemo } from "react";
+import { GraphInputSchema, GraphOutputSchema } from "@/lib/autogpt-server-api";
+import { getEffectiveType } from "@/lib/utils";
+import { EdgeLike, getSchemaProperties, getSchemaRequired } from "./helpers";
+import {
+  GraphMetaLike,
+  IncompatibilityInfo,
+  SubAgentUpdateInfo,
+} from "./types";
+
+/**
+ * Checks if a newer version of a sub-agent is available and determines compatibility
+ */
+export function useSubAgentUpdate<T extends GraphMetaLike>(
+  nodeID: string,
+  graphID: string | undefined,
+  graphVersion: number | undefined,
+  currentInputSchema: GraphInputSchema | undefined,
+  currentOutputSchema: GraphOutputSchema | undefined,
+  connections: EdgeLike[],
+  availableGraphs: T[],
+): SubAgentUpdateInfo<T> {
+  // Find the latest version of the same graph
+  const latestGraph = useMemo(() => {
+    if (!graphID) return null;
+    return availableGraphs.find((graph) => graph.id === graphID) || null;
+  }, [graphID, availableGraphs]);
+
+  // Check if there's an update available
+  const hasUpdate = useMemo(() => {
+    if (!latestGraph || graphVersion === undefined) return false;
+    return latestGraph.version! > graphVersion;
+  }, [latestGraph, graphVersion]);
+
+  // Get connected input and output handles for this specific node
+  const connectedHandles = useMemo(() => {
+    const inputHandles = new Set<string>();
+    const outputHandles = new Set<string>();
+
+    connections.forEach((conn) => {
+      // If this node is the target, the targetHandle is an input on this node
+      if (conn.target === nodeID && conn.targetHandle) {
+        inputHandles.add(conn.targetHandle);
+      }
+      // If this node is the source, the sourceHandle is an output on this node
+      if (conn.source === nodeID && conn.sourceHandle) {
+        outputHandles.add(conn.sourceHandle);
+      }
+    });
+
+    return { inputHandles, outputHandles };
+  }, [connections, nodeID]);
+
+  // Check schema compatibility
+  const compatibilityResult = useMemo((): {
+    isCompatible: boolean;
+    incompatibilities: IncompatibilityInfo | null;
+  } => {
+    if (!hasUpdate || !latestGraph) {
+      return { isCompatible: true, incompatibilities: null };
+    }
+
+    const newInputProps = getSchemaProperties(latestGraph.input_schema);
+    const newOutputProps = getSchemaProperties(latestGraph.output_schema);
+    const newRequiredInputs = getSchemaRequired(latestGraph.input_schema);
+
+    const currentInputProps = getSchemaProperties(currentInputSchema);
+    const currentOutputProps = getSchemaProperties(currentOutputSchema);
+    const currentRequiredInputs = getSchemaRequired(currentInputSchema);
+
+    const incompatibilities: IncompatibilityInfo = {
+      missingInputs: [],
+      missingOutputs: [],
+      newInputs: [],
+      newOutputs: [],
+      newRequiredInputs: [],
+      inputTypeMismatches: [],
+    };
+
+    // Check for missing connected inputs and type mismatches
+    connectedHandles.inputHandles.forEach((inputHandle) => {
+      if (!(inputHandle in newInputProps)) {
+        incompatibilities.missingInputs.push(inputHandle);
+      } else {
+        // Check for type mismatch on connected inputs
+        const currentProp = currentInputProps[inputHandle];
+        const newProp = newInputProps[inputHandle];
+        const currentType = getEffectiveType(currentProp);
+        const newType = getEffectiveType(newProp);
+
+        if (currentType && newType && currentType !== newType) {
+          incompatibilities.inputTypeMismatches.push({
+            name: inputHandle,
+            oldType: currentType,
+            newType: newType,
+          });
+        }
+      }
+    });
+
+    // Check for missing connected outputs
+    connectedHandles.outputHandles.forEach((outputHandle) => {
+      if (!(outputHandle in newOutputProps)) {
+        incompatibilities.missingOutputs.push(outputHandle);
+      }
+    });
+
+    // Check for new required inputs that didn't exist or weren't required before
+    newRequiredInputs.forEach((requiredInput) => {
+      const existedBefore = requiredInput in currentInputProps;
+      const wasRequiredBefore = currentRequiredInputs.includes(
+        requiredInput as string,
+      );
+
+      if (!existedBefore || !wasRequiredBefore) {
+        incompatibilities.newRequiredInputs.push(requiredInput as string);
+      }
+    });
+
+    // Check for new inputs that don't exist in the current version
+    Object.keys(newInputProps).forEach((inputName) => {
+      if (!(inputName in currentInputProps)) {
+        incompatibilities.newInputs.push(inputName);
+      }
+    });
+
+    // Check for new outputs that don't exist in the current version
+    Object.keys(newOutputProps).forEach((outputName) => {
+      if (!(outputName in currentOutputProps)) {
+        incompatibilities.newOutputs.push(outputName);
+      }
+    });
+
+    const hasIncompatibilities =
+      incompatibilities.missingInputs.length > 0 ||
+      incompatibilities.missingOutputs.length > 0 ||
+      incompatibilities.newRequiredInputs.length > 0 ||
+      incompatibilities.inputTypeMismatches.length > 0;
+
+    return {
+      isCompatible: !hasIncompatibilities,
+      incompatibilities: hasIncompatibilities ? incompatibilities : null,
+    };
+  }, [
+    hasUpdate,
+    latestGraph,
+    currentInputSchema,
+    currentOutputSchema,
+    connectedHandles,
+  ]);
+
+  return {
+    hasUpdate,
+    currentVersion: graphVersion || 0,
+    latestVersion: latestGraph?.version || 0,
+    latestGraph,
+    isCompatible: compatibilityResult.isCompatible,
+    incompatibilities: compatibilityResult.incompatibilities,
+  };
+}

autogpt_platform/frontend/src/app/(platform)/build/stores/graphStore.ts

@@ -1,5 +1,6 @@
 import { create } from "zustand";
 import { AgentExecutionStatus } from "@/app/api/__generated__/models/agentExecutionStatus";
+import { GraphMeta } from "@/app/api/__generated__/models/graphMeta";
 
 interface GraphStore {
   graphExecutionStatus: AgentExecutionStatus | undefined;
@@ -17,6 +18,10 @@ interface GraphStore {
     outputSchema: Record<string, any> | null,
   ) => void;
 
+  // Available graphs; used for sub-graph updates
+  availableSubGraphs: GraphMeta[];
+  setAvailableSubGraphs: (graphs: GraphMeta[]) => void;
+
   hasInputs: () => boolean;
   hasCredentials: () => boolean;
   hasOutputs: () => boolean;
@@ -29,6 +34,7 @@ export const useGraphStore = create<GraphStore>((set, get) => ({
   inputSchema: null,
   credentialsInputSchema: null,
   outputSchema: null,
+  availableSubGraphs: [],
 
   setGraphExecutionStatus: (status: AgentExecutionStatus | undefined) => {
     set({
@@ -46,6 +52,8 @@ export const useGraphStore = create<GraphStore>((set, get) => ({
   setGraphSchemas: (inputSchema, credentialsInputSchema, outputSchema) =>
     set({ inputSchema, credentialsInputSchema, outputSchema }),
 
+  setAvailableSubGraphs: (graphs) => set({ availableSubGraphs: graphs }),
+
   hasOutputs: () => {
     const { outputSchema } = get();
     return Object.keys(outputSchema?.properties ?? {}).length > 0;

autogpt_platform/frontend/src/app/(platform)/build/stores/nodeStore.ts

@@ -17,6 +17,25 @@ import {
   ensurePathExists,
   parseHandleIdToPath,
 } from "@/components/renderers/InputRenderer/helpers";
+import { IncompatibilityInfo } from "../hooks/useSubAgentUpdate/types";
+
+// Resolution mode data stored per node
+export type NodeResolutionData = {
+  incompatibilities: IncompatibilityInfo;
+  // The NEW schema from the update (what we're updating TO)
+  pendingUpdate: {
+    input_schema: Record<string, unknown>;
+    output_schema: Record<string, unknown>;
+  };
+  // The OLD schema before the update (what we're updating FROM)
+  // Needed to merge and show removed inputs during resolution
+  currentSchema: {
+    input_schema: Record<string, unknown>;
+    output_schema: Record<string, unknown>;
+  };
+  // The full updated hardcoded values to apply when resolution completes
+  pendingHardcodedValues: Record<string, unknown>;
+};
 
 // Minimum movement (in pixels) required before logging position change to history
 // Prevents spamming history with small movements when clicking on inputs inside blocks
@@ -65,12 +84,32 @@ type NodeStore = {
     backendId: string,
     errors: { [key: string]: string },
   ) => void;
-  clearAllNodeErrors: () => void; // Add this
 
   syncHardcodedValuesWithHandleIds: (nodeId: string) => void;
 
-  // Credentials optional helpers
   setCredentialsOptional: (nodeId: string, optional: boolean) => void;
+  clearAllNodeErrors: () => void;
+
+  nodesInResolutionMode: Set<string>;
+  brokenEdgeIDs: Map<string, Set<string>>;
+  nodeResolutionData: Map<string, NodeResolutionData>;
+  setNodeResolutionMode: (
+    nodeID: string,
+    inResolution: boolean,
+    resolutionData?: NodeResolutionData,
+  ) => void;
+  isNodeInResolutionMode: (nodeID: string) => boolean;
+  getNodeResolutionData: (nodeID: string) => NodeResolutionData | undefined;
+  setBrokenEdgeIDs: (nodeID: string, edgeIDs: string[]) => void;
+  removeBrokenEdgeID: (nodeID: string, edgeID: string) => void;
+  isEdgeBroken: (edgeID: string) => boolean;
+  clearResolutionState: () => void;
+
+  isInputBroken: (nodeID: string, handleID: string) => boolean;
+  getInputTypeMismatch: (
+    nodeID: string,
+    handleID: string,
+  ) => string | undefined;
 };
 
 export const useNodeStore = create<NodeStore>((set, get) => ({
@@ -374,4 +413,99 @@ export const useNodeStore = create<NodeStore>((set, get) => ({
 
     useHistoryStore.getState().pushState(newState);
   },
+
+  // Sub-agent resolution mode state
+  nodesInResolutionMode: new Set<string>(),
+  brokenEdgeIDs: new Map<string, Set<string>>(),
+  nodeResolutionData: new Map<string, NodeResolutionData>(),
+
+  setNodeResolutionMode: (
+    nodeID: string,
+    inResolution: boolean,
+    resolutionData?: NodeResolutionData,
+  ) => {
+    set((state) => {
+      const newNodesSet = new Set(state.nodesInResolutionMode);
+      const newResolutionDataMap = new Map(state.nodeResolutionData);
+      const newBrokenEdgeIDs = new Map(state.brokenEdgeIDs);
+
+      if (inResolution) {
+        newNodesSet.add(nodeID);
+        if (resolutionData) {
+          newResolutionDataMap.set(nodeID, resolutionData);
+        }
+      } else {
+        newNodesSet.delete(nodeID);
+        newResolutionDataMap.delete(nodeID);
+        newBrokenEdgeIDs.delete(nodeID); // Clean up broken edges when exiting resolution mode
+      }
+
+      return {
+        nodesInResolutionMode: newNodesSet,
+        nodeResolutionData: newResolutionDataMap,
+        brokenEdgeIDs: newBrokenEdgeIDs,
+      };
+    });
+  },
+
+  isNodeInResolutionMode: (nodeID: string) => {
+    return get().nodesInResolutionMode.has(nodeID);
+  },
+
+  getNodeResolutionData: (nodeID: string) => {
+    return get().nodeResolutionData.get(nodeID);
+  },
+
+  setBrokenEdgeIDs: (nodeID: string, edgeIDs: string[]) => {
+    set((state) => {
+      const newMap = new Map(state.brokenEdgeIDs);
+      newMap.set(nodeID, new Set(edgeIDs));
+      return { brokenEdgeIDs: newMap };
+    });
+  },
+
+  removeBrokenEdgeID: (nodeID: string, edgeID: string) => {
+    set((state) => {
+      const newMap = new Map(state.brokenEdgeIDs);
+      const nodeSet = new Set(newMap.get(nodeID) || []);
+      nodeSet.delete(edgeID);
+      newMap.set(nodeID, nodeSet);
+      return { brokenEdgeIDs: newMap };
+    });
+  },
+
+  isEdgeBroken: (edgeID: string) => {
+    // Check across all nodes
+    const brokenEdgeIDs = get().brokenEdgeIDs;
+    for (const edgeSet of brokenEdgeIDs.values()) {
+      if (edgeSet.has(edgeID)) {
+        return true;
+      }
+    }
+    return false;
+  },
+
+  clearResolutionState: () => {
+    set({
+      nodesInResolutionMode: new Set<string>(),
+      brokenEdgeIDs: new Map<string, Set<string>>(),
+      nodeResolutionData: new Map<string, NodeResolutionData>(),
+    });
+  },
+
+  // Helper functions for input renderers
+  isInputBroken: (nodeID: string, handleID: string) => {
+    const resolutionData = get().nodeResolutionData.get(nodeID);
+    if (!resolutionData) return false;
+    return resolutionData.incompatibilities.missingInputs.includes(handleID);
+  },
+
+  getInputTypeMismatch: (nodeID: string, handleID: string) => {
+    const resolutionData = get().nodeResolutionData.get(nodeID);
+    if (!resolutionData) return undefined;
+    const mismatch = resolutionData.incompatibilities.inputTypeMismatches.find(
+      (m) => m.name === handleID,
+    );
+    return mismatch?.newType;
+  },
 }));

autogpt_platform/frontend/src/app/(platform)/error.tsx

@@ -18,7 +18,7 @@ function ErrorPageContent() {
     ) {
       window.location.href = "/login";
     } else {
-      window.location.href = "/marketplace";
+      window.document.location.reload();
     }
   }
 

autogpt_platform/frontend/src/app/(platform)/profile/(user)/layout.tsx

@@ -29,7 +29,7 @@ export default function Layout({ children }: { children: React.ReactNode }) {
           href: "/profile/dashboard",
           icon: <StorefrontIcon className="size-5" />,
         },
-        ...(isPaymentEnabled || true
+        ...(isPaymentEnabled
           ? [
               {
                 text: "Billing",

autogpt_platform/frontend/src/components/atoms/Button/helpers.ts

@@ -32,7 +32,7 @@ export const extendedButtonVariants = cva(
         ),
       },
       size: {
-        small: "px-3 py-2 text-sm gap-1.5 h-[2.25rem]",
+        small: "px-3 py-2 text-sm gap-1.5 h-[2.25rem] min-w-[5.5rem]",
         large: "px-4 py-3 text-sm gap-2 h-[3.25rem]",
         icon: "p-3 !min-w-0",
       },

autogpt_platform/frontend/src/components/renderers/InputRenderer/FormRenderer.tsx

@@ -30,8 +30,6 @@ export const FormRenderer = ({
     return generateUiSchemaForCustomFields(preprocessedSchema, uiSchema);
   }, [preprocessedSchema, uiSchema]);
 
-  console.log("preprocessedSchema", preprocessedSchema);
-
   return (
     <div className={"mb-6 mt-4"}>
       <Form

autogpt_platform/frontend/src/components/renderers/InputRenderer/base/anyof/AnyOfField.tsx

@@ -2,10 +2,12 @@ import { FieldProps, getUiOptions, getWidget } from "@rjsf/utils";
 import { AnyOfFieldTitle } from "./components/AnyOfFieldTitle";
 import { isEmpty } from "lodash";
 import { useAnyOfField } from "./useAnyOfField";
-import { getHandleId, updateUiOption } from "../../helpers";
+import { cleanUpHandleId, getHandleId, updateUiOption } from "../../helpers";
 import { useEdgeStore } from "@/app/(platform)/build/stores/edgeStore";
 import { ANY_OF_FLAG } from "../../constants";
 import { findCustomFieldId } from "../../registry";
+import { useNodeStore } from "@/app/(platform)/build/stores/nodeStore";
+import { cn } from "@/lib/utils";
 
 export const AnyOfField = (props: FieldProps) => {
   const { registry, schema } = props;
@@ -21,6 +23,8 @@ export const AnyOfField = (props: FieldProps) => {
     field_id,
   } = useAnyOfField(props);
 
+  const isInputBroken = useNodeStore((state) => state.isInputBroken);
+
   const parentCustomFieldId = findCustomFieldId(schema);
   if (parentCustomFieldId) {
     return null;
@@ -43,6 +47,7 @@ export const AnyOfField = (props: FieldProps) => {
   });
 
   const isHandleConnected = isInputConnected(nodeId, handleId);
+  const isAnyOfInputBroken = isInputBroken(nodeId, cleanUpHandleId(handleId));
 
   // Now anyOf can render - custom fields if the option schema matches a custom field
   const optionCustomFieldId = optionSchema
@@ -78,7 +83,11 @@ export const AnyOfField = (props: FieldProps) => {
       registry={registry}
       placeholder={props.placeholder}
       autocomplete={props.autocomplete}
-      className="-ml-1 h-[22px] w-fit gap-1 px-1 pl-2 text-xs font-medium"
+      className={cn(
+        "-ml-1 h-[22px] w-fit gap-1 px-1 pl-2 text-xs font-medium",
+        isAnyOfInputBroken &&
+          "border-red-500 bg-red-100 text-red-600 line-through",
+      )}
       autofocus={props.autofocus}
       label=""
       hideLabel={true}
@@ -93,7 +102,7 @@ export const AnyOfField = (props: FieldProps) => {
         selector={selector}
         uiSchema={updatedUiSchema}
       />
-      {!isHandleConnected && optionsSchemaField}
+      {!isHandleConnected && !isAnyOfInputBroken && optionsSchemaField}
     </div>
   );
 };

autogpt_platform/frontend/src/components/renderers/InputRenderer/base/anyof/components/AnyOfFieldTitle.tsx

@@ -13,6 +13,7 @@ import { Text } from "@/components/atoms/Text/Text";
 import { isOptionalType } from "../../../utils/schema-utils";
 import { getTypeDisplayInfo } from "@/app/(platform)/build/components/FlowEditor/nodes/helpers";
 import { cn } from "@/lib/utils";
+import { useNodeStore } from "@/app/(platform)/build/stores/nodeStore";
 
 interface customFieldProps extends FieldProps {
   selector: JSX.Element;
@@ -51,6 +52,13 @@ export const AnyOfFieldTitle = (props: customFieldProps) => {
     shouldShowTypeSelector(schema) && !isArrayItem && !isHandleConnected;
   const shoudlShowType = isHandleConnected || (isOptional && type);
 
+  const isInputBroken = useNodeStore((state) =>
+    state.isInputBroken(nodeId, cleanUpHandleId(uiOptions.handleId)),
+  );
+  const inputMismatch = useNodeStore((state) =>
+    state.getInputTypeMismatch(nodeId, cleanUpHandleId(uiOptions.handleId)),
+  );
+
   return (
     <div className="flex items-center gap-2">
       <TitleFieldTemplate
@@ -62,8 +70,16 @@ export const AnyOfFieldTitle = (props: customFieldProps) => {
         uiSchema={uiSchema}
       />
       {shoudlShowType && (
-        <Text variant="small" className={cn("text-zinc-700", colorClass)}>
+        <Text
-          {isOptional ? `(${displayType})` : "(any)"}
+          variant="small"
+          className={cn(
+            "text-zinc-700",
+            isInputBroken && "line-through",
+            colorClass,
+            inputMismatch && "rounded-md bg-red-100 px-1 !text-red-500",
+          )}
+        >
+          {isOptional ? `(${inputMismatch || displayType})` : "(any)"}
         </Text>
       )}
       {shouldShowSelector && selector}

autogpt_platform/frontend/src/components/renderers/InputRenderer/base/standard/TitleField.tsx

@@ -9,8 +9,9 @@ import { Text } from "@/components/atoms/Text/Text";
 import { getTypeDisplayInfo } from "@/app/(platform)/build/components/FlowEditor/nodes/helpers";
 import { isAnyOfSchema } from "../../utils/schema-utils";
 import { cn } from "@/lib/utils";
-import { isArrayItem } from "../../helpers";
+import { cleanUpHandleId, isArrayItem } from "../../helpers";
 import { InputNodeHandle } from "@/app/(platform)/build/components/FlowEditor/handlers/NodeHandle";
+import { useNodeStore } from "@/app/(platform)/build/stores/nodeStore";
 
 export default function TitleField(props: TitleFieldProps) {
   const { id, title, required, schema, registry, uiSchema } = props;
@@ -26,6 +27,11 @@ export default function TitleField(props: TitleFieldProps) {
   const smallText = isArrayItemFlag || additional;
 
   const showHandle = uiOptions.showHandles ?? showHandles;
+
+  const isInputBroken = useNodeStore((state) =>
+    state.isInputBroken(nodeId, cleanUpHandleId(uiOptions.handleId)),
+  );
+
   return (
     <div className="flex items-center">
       {showHandle !== false && (
@@ -34,7 +40,11 @@ export default function TitleField(props: TitleFieldProps) {
       <Text
         variant={isArrayItemFlag ? "small" : "body"}
         id={id}
-        className={cn("line-clamp-1", smallText && "text-sm text-zinc-700")}
+        className={cn(
+          "line-clamp-1",
+          smallText && "text-sm text-zinc-700",
+          isInputBroken && "text-red-500 line-through",
+        )}
       >
         {title}
       </Text>
@@ -44,7 +54,7 @@ export default function TitleField(props: TitleFieldProps) {
       {!isAnyOf && (
         <Text
           variant="small"
-          className={cn("ml-2", colorClass)}
+          className={cn("ml-2", isInputBroken && "line-through", colorClass)}
           id={description_id}
         >
           ({displayType})

autogpt_platform/frontend/src/components/renderers/InputRenderer/helpers.ts

@@ -30,6 +30,8 @@ export function updateUiOption<T extends Record<string, any>>(
 }
 
 export const cleanUpHandleId = (handleId: string) => {
+  if (!handleId) return "";
+
   let newHandleId = handleId;
   if (handleId.includes(ANY_OF_FLAG)) {
     newHandleId = newHandleId.replace(ANY_OF_FLAG, "");

autogpt_platform/frontend/src/hooks/useAgentGraph.tsx

@@ -233,13 +233,14 @@ export default function useAgentGraph(
         title: `${block.name} ${node.id}`,
         inputSchema: block.inputSchema,
         outputSchema: block.outputSchema,
+        isOutputStatic: block.staticOutput,
         hardcodedValues: node.input_default,
         uiType: block.uiType,
         metadata: metadata,
         connections: graph.links
           .filter((l) => [l.source_id, l.sink_id].includes(node.id))
           .map((link) => ({
-            edge_id: formatEdgeID(link),
+            id: formatEdgeID(link),
             source: link.source_id,
             sourceHandle: link.source_name,
             target: link.sink_id,

autogpt_platform/frontend/src/lib/autogpt-server-api/types.ts

@@ -245,8 +245,8 @@ export type BlockIONullSubSchema = BlockIOSubSchemaMeta & {
 // At the time of writing, combined schemas only occur on the first nested level in a
 // block schema. It is typed this way to make the use of these objects less tedious.
 type BlockIOCombinedTypeSubSchema = BlockIOSubSchemaMeta & {
-  type: never;
+  type?: never;
-  const: never;
+  const?: never;
 } & (
     | {
         allOf: [BlockIOSimpleTypeSubSchema];
@@ -368,8 +368,8 @@ export type GraphMeta = {
   recommended_schedule_cron: string | null;
   forked_from_id?: GraphID | null;
   forked_from_version?: number | null;
-  input_schema: GraphIOSchema;
+  input_schema: GraphInputSchema;
-  output_schema: GraphIOSchema;
+  output_schema: GraphOutputSchema;
   credentials_input_schema: CredentialsInputSchema;
 } & (
   | {
@@ -385,19 +385,51 @@ export type GraphMeta = {
 export type GraphID = Brand<string, "GraphID">;
 
 /* Derived from backend/data/graph.py:Graph._generate_schema() */
-export type GraphIOSchema = {
+export type GraphInputSchema = {
   type: "object";
-  properties: Record<string, GraphIOSubSchema>;
+  properties: Record<string, GraphInputSubSchema>;
-  required: (keyof BlockIORootSchema["properties"])[];
+  required: (keyof GraphInputSchema["properties"])[];
 };
-export type GraphIOSubSchema = Omit<
+export type GraphInputSubSchema = GraphOutputSubSchema &
-  BlockIOSubSchemaMeta,
+  (
-  "placeholder" | "depends_on" | "hidden"
+    | { type?: never; default: any | null } // AgentInputBlock (generic Any type)
-> & {
+    | { type: "string"; format: "short-text"; default: string | null } // AgentShortTextInputBlock
-  type: never; // bodge to avoid type checking hell; doesn't exist at runtime
+    | { type: "string"; format: "long-text"; default: string | null } // AgentLongTextInputBlock
-  default?: string;
+    | { type: "integer"; default: number | null } // AgentNumberInputBlock
+    | { type: "string"; format: "date"; default: string | null } // AgentDateInputBlock
+    | { type: "string"; format: "time"; default: string | null } // AgentTimeInputBlock
+    | { type: "string"; format: "file"; default: string | null } // AgentFileInputBlock
+    | { type: "string"; enum: string[]; default: string | null } // AgentDropdownInputBlock
+    | { type: "boolean"; default: boolean } // AgentToggleInputBlock
+    | {
+        // AgentTableInputBlock
+        type: "array";
+        format: "table";
+        items: {
+          type: "object";
+          properties: Record<string, { type: "string" }>;
+        };
+        default: Array<Record<string, string>> | null;
+      }
+    | {
+        // AgentGoogleDriveFileInputBlock
+        type: "object";
+        format: "google-drive-picker";
+        google_drive_picker_config?: GoogleDrivePickerConfig;
+        default: GoogleDriveFile | null;
+      }
+  );
+export type GraphOutputSchema = {
+  type: "object";
+  properties: Record<string, GraphOutputSubSchema>;
+  required: (keyof GraphOutputSchema["properties"])[];
+};
+export type GraphOutputSubSchema = {
+  // TODO: typed outputs based on the incoming edges?
+  title: string;
+  description?: string;
+  advanced: boolean;
   secret: boolean;
-  metadata?: any;
 };
 
 export type CredentialsInputSchema = {
@@ -440,8 +472,8 @@ export type GraphUpdateable = Omit<
   is_active?: boolean;
   nodes: NodeCreatable[];
   links: LinkCreatable[];
-  input_schema?: GraphIOSchema;
+  input_schema?: GraphInputSchema;
-  output_schema?: GraphIOSchema;
+  output_schema?: GraphOutputSchema;
 };
 
 export type GraphCreatable = _GraphCreatableInner & {
@@ -497,8 +529,8 @@ export type LibraryAgent = {
   name: string;
   description: string;
   instructions?: string | null;
-  input_schema: GraphIOSchema;
+  input_schema: GraphInputSchema;
-  output_schema: GraphIOSchema;
+  output_schema: GraphOutputSchema;
   credentials_input_schema: CredentialsInputSchema;
   new_output: boolean;
   can_access_graph: boolean;

autogpt_platform/frontend/src/lib/utils.ts

@@ -6,7 +6,10 @@ import { NodeDimension } from "@/app/(platform)/build/components/legacy-builder/
 import {
   BlockIOObjectSubSchema,
   BlockIORootSchema,
+  BlockIOSubSchema,
   Category,
+  GraphInputSubSchema,
+  GraphOutputSubSchema,
 } from "@/lib/autogpt-server-api/types";
 
 export function cn(...inputs: ClassValue[]) {
@@ -76,8 +79,8 @@ export function getTypeBgColor(type: string | null): string {
   );
 }
 
-export function getTypeColor(type: string | null): string {
+export function getTypeColor(type: string | undefined): string {
-  if (type === null) return "#6b7280";
+  if (!type) return "#6b7280";
   return (
     {
       string: "#22c55e",
@@ -88,11 +91,59 @@ export function getTypeColor(type: string | null): string {
       array: "#6366f1",
       null: "#6b7280",
       any: "#6b7280",
-      "": "#6b7280",
     }[type] || "#6b7280"
   );
 }
 
+/**
+ * Extracts the effective type from a JSON schema, handling anyOf/oneOf/allOf wrappers.
+ * Returns the first non-null type found in the schema structure.
+ */
+export function getEffectiveType(
+  schema:
+    | BlockIOSubSchema
+    | GraphInputSubSchema
+    | GraphOutputSubSchema
+    | null
+    | undefined,
+): string | undefined {
+  if (!schema) return undefined;
+
+  // Direct type property
+  if ("type" in schema && schema.type) {
+    return String(schema.type);
+  }
+
+  // Handle allOf - typically a single-item wrapper
+  if (
+    "allOf" in schema &&
+    Array.isArray(schema.allOf) &&
+    schema.allOf.length > 0
+  ) {
+    return getEffectiveType(schema.allOf[0]);
+  }
+
+  // Handle anyOf - e.g. [{ type: "string" }, { type: "null" }]
+  if ("anyOf" in schema && Array.isArray(schema.anyOf)) {
+    for (const item of schema.anyOf) {
+      if ("type" in item && item.type !== "null") {
+        return String(item.type);
+      }
+    }
+  }
+
+  // Handle oneOf
+  if ("oneOf" in schema && Array.isArray(schema.oneOf)) {
+    for (const item of schema.oneOf) {
+      if ("type" in item && item.type !== "null") {
+        return String(item.type);
+      }
+    }
+  }
+
+  return undefined;
+}
+
 export function beautifyString(name: string): string {
   // Regular expression to identify places to split, considering acronyms
   const result = name