rename correctly

apps/sim/app/api/form/[identifier]/route.ts

@@ -11,7 +11,7 @@ import { preprocessExecution } from '@/lib/execution/preprocessing'
 import { LoggingSession } from '@/lib/logs/execution/logging-session'
 import { normalizeInputFormatValue } from '@/lib/workflows/input-format'
 import { createStreamingResponse } from '@/lib/workflows/streaming/streaming'
-import { isValidStartBlockType } from '@/lib/workflows/triggers/start-block-types'
+import { isInputDefinitionTrigger } from '@/lib/workflows/triggers/input-definition-triggers'
 import { setFormAuthCookie, validateFormAuth } from '@/app/api/form/utils'
 import { createErrorResponse, createSuccessResponse } from '@/app/api/workflows/utils'
 
@@ -36,7 +36,7 @@ async function getWorkflowInputSchema(workflowId: string): Promise<any[]> {
       .from(workflowBlocks)
       .where(eq(workflowBlocks.workflowId, workflowId))
 
-    const startBlock = blocks.find((block) => isValidStartBlockType(block.type))
+    const startBlock = blocks.find((block) => isInputDefinitionTrigger(block.type))
 
     if (!startBlock) {
       return []

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/action-bar/action-bar.tsx

@@ -2,7 +2,7 @@ import { memo, useCallback } from 'react'
 import { ArrowLeftRight, ArrowUpDown, Circle, CircleOff, LogOut } from 'lucide-react'
 import { Button, Copy, Tooltip, Trash2 } from '@/components/emcn'
 import { cn } from '@/lib/core/utils/cn'
-import { isValidStartBlockType } from '@/lib/workflows/triggers/start-block-types'
+import { isInputDefinitionTrigger } from '@/lib/workflows/triggers/input-definition-triggers'
 import { useUserPermissionsContext } from '@/app/workspace/[workspaceId]/providers/workspace-permissions-provider'
 import { useCollaborativeWorkflow } from '@/hooks/use-collaborative-workflow'
 import { useWorkflowRegistry } from '@/stores/workflows/registry/store'
@@ -90,7 +90,7 @@ export const ActionBar = memo(
 
     const userPermissions = useUserPermissionsContext()
 
-    const isStartBlock = isValidStartBlockType(blockType)
+    const isStartBlock = isInputDefinitionTrigger(blockType)
     const isResponseBlock = blockType === 'response'
     const isNoteBlock = blockType === 'note'
     const isSubflowBlock = blockType === 'loop' || blockType === 'parallel'

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/block-menu/block-menu.tsx

@@ -8,7 +8,7 @@ import {
   PopoverDivider,
   PopoverItem,
 } from '@/components/emcn'
-import { isValidStartBlockType } from '@/lib/workflows/triggers/start-block-types'
+import { TriggerUtils } from '@/lib/workflows/triggers/triggers'
 
 /**
  * Block information for context menu actions
@@ -74,12 +74,16 @@ export function BlockMenu({
   const allEnabled = selectedBlocks.every((b) => b.enabled)
   const allDisabled = selectedBlocks.every((b) => !b.enabled)
 
-  const hasStarterBlock = selectedBlocks.some((b) => isValidStartBlockType(b.type))
+  const hasSingletonBlock = selectedBlocks.some(
+    (b) =>
+      TriggerUtils.requiresSingleInstance(b.type) || TriggerUtils.isSingleInstanceBlockType(b.type)
+  )
+  const hasTriggerBlock = selectedBlocks.some((b) => TriggerUtils.isTriggerBlock(b))
   const allNoteBlocks = selectedBlocks.every((b) => b.type === 'note')
   const isSubflow =
     isSingleBlock && (selectedBlocks[0]?.type === 'loop' || selectedBlocks[0]?.type === 'parallel')
 
-  const canRemoveFromSubflow = showRemoveFromSubflow && !hasStarterBlock
+  const canRemoveFromSubflow = showRemoveFromSubflow && !hasTriggerBlock
 
   const getToggleEnabledLabel = () => {
     if (allEnabled) return 'Disable'
@@ -127,7 +131,7 @@ export function BlockMenu({
           <span>Paste</span>
           <span className='ml-auto opacity-70 group-hover:opacity-100'>⌘V</span>
         </PopoverItem>
-        {!hasStarterBlock && (
+        {!hasSingletonBlock && (
           <PopoverItem
             disabled={disableEdit}
             onClick={() => {

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/deploy/components/deploy-modal/components/form/form.tsx

@@ -17,7 +17,7 @@ import { Skeleton } from '@/components/ui'
 import { isDev } from '@/lib/core/config/feature-flags'
 import { cn } from '@/lib/core/utils/cn'
 import { getBaseUrl, getEmailDomain } from '@/lib/core/utils/urls'
-import { isValidStartBlockType } from '@/lib/workflows/triggers/start-block-types'
+import { isInputDefinitionTrigger } from '@/lib/workflows/triggers/input-definition-triggers'
 import {
   type FieldConfig,
   useCreateForm,
@@ -147,7 +147,7 @@ export function FormDeploy({
 
   useEffect(() => {
     const blocks = Object.values(useWorkflowStore.getState().blocks)
-    const startBlock = blocks.find((b) => isValidStartBlockType(b.type))
+    const startBlock = blocks.find((b) => isInputDefinitionTrigger(b.type))
 
     if (startBlock) {
       const inputFormat = useSubBlockStore.getState().getValue(startBlock.id, 'inputFormat')

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/deploy/components/deploy-modal/components/general/components/api-info-modal.tsx

@@ -14,7 +14,7 @@ import {
   Textarea,
 } from '@/components/emcn'
 import { normalizeInputFormatValue } from '@/lib/workflows/input-format'
-import { isValidStartBlockType } from '@/lib/workflows/triggers/start-block-types'
+import { isInputDefinitionTrigger } from '@/lib/workflows/triggers/input-definition-triggers'
 import type { InputFormatField } from '@/lib/workflows/types'
 import { useWorkflowRegistry } from '@/stores/workflows/registry/store'
 import { useSubBlockStore } from '@/stores/workflows/subblock/store'
@@ -52,7 +52,7 @@ export function ApiInfoModal({ open, onOpenChange, workflowId }: ApiInfoModalPro
     for (const [blockId, block] of Object.entries(blocks)) {
       if (!block || typeof block !== 'object') continue
       const blockType = (block as { type?: string }).type
-      if (blockType && isValidStartBlockType(blockType)) {
+      if (blockType && isInputDefinitionTrigger(blockType)) {
         return blockId
       }
     }

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/deploy/components/deploy-modal/components/mcp/mcp.tsx

@@ -15,7 +15,7 @@ import {
 import { Skeleton } from '@/components/ui'
 import { generateToolInputSchema, sanitizeToolName } from '@/lib/mcp/workflow-tool-schema'
 import { normalizeInputFormatValue } from '@/lib/workflows/input-format'
-import { isValidStartBlockType } from '@/lib/workflows/triggers/start-block-types'
+import { isInputDefinitionTrigger } from '@/lib/workflows/triggers/input-definition-triggers'
 import type { InputFormatField } from '@/lib/workflows/types'
 import {
   useAddWorkflowMcpTool,
@@ -107,7 +107,7 @@ export function McpDeploy({
     for (const [blockId, block] of Object.entries(blocks)) {
       if (!block || typeof block !== 'object') continue
       const blockType = (block as { type?: string }).type
-      if (blockType && isValidStartBlockType(blockType)) {
+      if (blockType && isInputDefinitionTrigger(blockType)) {
         return blockId
       }
     }

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/hooks/use-accessible-reference-prefixes.ts

@@ -2,7 +2,7 @@ import { useMemo } from 'react'
 import { useShallow } from 'zustand/react/shallow'
 import { BlockPathCalculator } from '@/lib/workflows/blocks/block-path-calculator'
 import { SYSTEM_REFERENCE_PREFIXES } from '@/lib/workflows/sanitization/references'
-import { isValidStartBlockType } from '@/lib/workflows/triggers/start-block-types'
+import { isInputDefinitionTrigger } from '@/lib/workflows/triggers/input-definition-triggers'
 import { normalizeName } from '@/executor/constants'
 import { useWorkflowStore } from '@/stores/workflows/workflow/store'
 import type { Loop, Parallel } from '@/stores/workflows/workflow/types'
@@ -27,7 +27,7 @@ export function useAccessibleReferencePrefixes(blockId?: string | null): Set<str
     const accessibleIds = new Set<string>(ancestorIds)
     accessibleIds.add(blockId)
 
-    const starterBlock = Object.values(blocks).find((block) => isValidStartBlockType(block.type))
+    const starterBlock = Object.values(blocks).find((block) => isInputDefinitionTrigger(block.type))
     if (starterBlock && ancestorIds.includes(starterBlock.id)) {
       accessibleIds.add(starterBlock.id)
     }

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/workflow.tsx

@@ -180,6 +180,21 @@ function mapEdgesByNode(edges: Edge[], nodeIds: Set<string>): Map<string, Edge[]
   return result
 }
 
+/**
+ * Syncs the panel editor with the current selection state.
+ * Shows block details when exactly one block is selected, clears otherwise.
+ */
+function syncPanelWithSelection(selectedIds: string[]) {
+  const { currentBlockId, clearCurrentBlock, setCurrentBlockId } = usePanelEditorStore.getState()
+  if (selectedIds.length === 1 && selectedIds[0] !== currentBlockId) {
+    setCurrentBlockId(selectedIds[0])
+  } else if (selectedIds.length === 0 && currentBlockId) {
+    clearCurrentBlock()
+  } else if (selectedIds.length > 1 && currentBlockId) {
+    clearCurrentBlock()
+  }
+}
+
 /** Custom node types for ReactFlow. */
 const nodeTypes: NodeTypes = {
   workflowBlock: WorkflowBlock,
@@ -2075,7 +2090,10 @@ const WorkflowContent = React.memo(() => {
         ...node,
         selected: pendingSet.has(node.id),
       }))
-      setDisplayNodes(resolveParentChildSelectionConflicts(withSelection, blocks))
+      const resolved = resolveParentChildSelectionConflicts(withSelection, blocks)
+      setDisplayNodes(resolved)
+      const selectedIds = resolved.filter((node) => node.selected).map((node) => node.id)
+      syncPanelWithSelection(selectedIds)
       return
     }
 
@@ -2175,13 +2193,7 @@ const WorkflowContent = React.memo(() => {
       })
       const selectedIds = selectedIdsRef.current as string[] | null
       if (selectedIds !== null) {
-        const { currentBlockId, clearCurrentBlock, setCurrentBlockId } =
-          usePanelEditorStore.getState()
-        if (selectedIds.length === 1 && selectedIds[0] !== currentBlockId) {
-          setCurrentBlockId(selectedIds[0])
-        } else if (selectedIds.length === 0 && currentBlockId) {
-          clearCurrentBlock()
-        }
+        syncPanelWithSelection(selectedIds)
       }
     },
     [blocks]

apps/sim/lib/copilot/tools/client/workflow/get-block-upstream-references.ts

@@ -17,7 +17,7 @@ import {
   type GetBlockUpstreamReferencesResultType,
 } from '@/lib/copilot/tools/shared/schemas'
 import { BlockPathCalculator } from '@/lib/workflows/blocks/block-path-calculator'
-import { isValidStartBlockType } from '@/lib/workflows/triggers/start-block-types'
+import { isInputDefinitionTrigger } from '@/lib/workflows/triggers/input-definition-triggers'
 import { useWorkflowRegistry } from '@/stores/workflows/registry/store'
 import { useWorkflowStore } from '@/stores/workflows/workflow/store'
 import type { Loop, Parallel } from '@/stores/workflows/workflow/types'
@@ -141,7 +141,7 @@ export class GetBlockUpstreamReferencesClientTool extends BaseClientTool {
         const accessibleIds = new Set<string>(ancestorIds)
         accessibleIds.add(blockId)
 
-        const starterBlock = Object.values(blocks).find((b) => isValidStartBlockType(b.type))
+        const starterBlock = Object.values(blocks).find((b) => isInputDefinitionTrigger(b.type))
         if (starterBlock && ancestorIds.includes(starterBlock.id)) {
           accessibleIds.add(starterBlock.id)
         }

apps/sim/lib/mcp/workflow-tool-schema.ts

@@ -1,6 +1,6 @@
 import { z } from 'zod'
 import { normalizeInputFormatValue } from '@/lib/workflows/input-format'
-import { isValidStartBlockType } from '@/lib/workflows/triggers/start-block-types'
+import { isInputDefinitionTrigger } from '@/lib/workflows/triggers/input-definition-triggers'
 import type { InputFormatField } from '@/lib/workflows/types'
 import type { McpToolSchema } from './types'
 
@@ -217,7 +217,7 @@ export function extractInputFormatFromBlocks(
     const blockObj = block as Record<string, unknown>
     const blockType = blockObj.type as string
 
-    if (isValidStartBlockType(blockType)) {
+    if (isInputDefinitionTrigger(blockType)) {
       // Try to get inputFormat from subBlocks.inputFormat.value
       const subBlocks = blockObj.subBlocks as Record<string, { value?: unknown }> | undefined
       const subBlockValue = subBlocks?.inputFormat?.value

apps/sim/lib/workflows/input-format.ts

@@ -1,4 +1,4 @@
-import { isValidStartBlockType } from '@/lib/workflows/triggers/start-block-types'
+import { isInputDefinitionTrigger } from '@/lib/workflows/triggers/input-definition-triggers'
 import type { InputFormatField } from '@/lib/workflows/types'
 
 /**
@@ -25,7 +25,7 @@ export function extractInputFieldsFromBlocks(
   // Find trigger block
   const triggerEntry = Object.entries(blocks).find(([, block]) => {
     const b = block as Record<string, unknown>
-    return typeof b.type === 'string' && isValidStartBlockType(b.type)
+    return typeof b.type === 'string' && isInputDefinitionTrigger(b.type)
   })
 
   if (!triggerEntry) return []

apps/sim/lib/workflows/triggers/input-definition-triggers.ts

@@ -0,0 +1,28 @@
+/**
+ * Trigger types that define workflow input parameters (inputFormat).
+ * These are triggers where users can configure input schema for the workflow.
+ *
+ * This module is kept lightweight with no dependencies to avoid circular imports.
+ *
+ * Note: External triggers like webhook/schedule are NOT included here because
+ * they receive input from external event payloads, not user-defined inputFormat.
+ */
+export const INPUT_DEFINITION_TRIGGER_TYPES = [
+  'starter',
+  'start',
+  'start_trigger',
+  'api_trigger',
+  'input_trigger',
+] as const
+
+export type InputDefinitionTriggerType = (typeof INPUT_DEFINITION_TRIGGER_TYPES)[number]
+
+/**
+ * Check if a block type is a trigger that defines workflow input parameters.
+ * Used to find blocks that have inputFormat subblock for workflow input schema.
+ */
+export function isInputDefinitionTrigger(
+  blockType: string
+): blockType is InputDefinitionTriggerType {
+  return INPUT_DEFINITION_TRIGGER_TYPES.includes(blockType as InputDefinitionTriggerType)
+}

apps/sim/lib/workflows/triggers/start-block-types.ts

@@ -1,21 +0,0 @@
-/**
- * Valid start block types that can trigger a workflow
- * This module is kept lightweight with no dependencies to avoid circular imports
- */
-export const VALID_START_BLOCK_TYPES = [
-  'starter',
-  'start',
-  'start_trigger',
-  'api',
-  'api_trigger',
-  'input_trigger',
-] as const
-
-export type ValidStartBlockType = (typeof VALID_START_BLOCK_TYPES)[number]
-
-/**
- * Check if a block type is a valid start block type
- */
-export function isValidStartBlockType(blockType: string): blockType is ValidStartBlockType {
-  return VALID_START_BLOCK_TYPES.includes(blockType as ValidStartBlockType)
-}

apps/sim/lib/workflows/triggers/trigger-utils.ts

@@ -1,5 +1,5 @@
 import { createLogger } from '@sim/logger'
-import { isValidStartBlockType } from '@/lib/workflows/triggers/start-block-types'
+import { isInputDefinitionTrigger } from '@/lib/workflows/triggers/input-definition-triggers'
 import {
   type StartBlockCandidate,
   StartBlockPath,
@@ -22,7 +22,7 @@ export function hasValidStartBlockInState(state: WorkflowState | null | undefine
 
   const startBlock = Object.values(state.blocks).find((block: BlockState) => {
     const blockType = block?.type
-    return isValidStartBlockType(blockType)
+    return isInputDefinitionTrigger(blockType)
   })
 
   return !!startBlock