fix

apps/sim/blocks/blocks/gmail.ts

@@ -581,6 +581,18 @@ export const GmailV2Block: BlockConfig<GmailToolResponse> = {
     results: { type: 'json', description: 'Search/read summary results' },
     attachments: { type: 'json', description: 'Downloaded attachments (if enabled)' },
 
+    // Draft-specific outputs
+    draftId: {
+      type: 'string',
+      description: 'Draft ID',
+      condition: { field: 'operation', value: 'draft_gmail' },
+    },
+    messageId: {
+      type: 'string',
+      description: 'Gmail message ID for the draft',
+      condition: { field: 'operation', value: 'draft_gmail' },
+    },
+
     // Trigger outputs (unchanged)
     email_id: { type: 'string', description: 'Gmail message ID' },
     thread_id: { type: 'string', description: 'Gmail thread ID' },

apps/sim/executor/utils/block-data.ts

@@ -1,7 +1,9 @@
-import { getBlockOutputs } from '@/lib/workflows/blocks/block-outputs'
 import { normalizeName } from '@/executor/constants'
 import type { ExecutionContext } from '@/executor/types'
 import type { OutputSchema } from '@/executor/utils/block-reference'
+import type { SerializedBlock } from '@/serializer/types'
+import type { ToolConfig } from '@/tools/types'
+import { getTool } from '@/tools/utils'
 
 export interface BlockDataCollection {
   blockData: Record<string, unknown>
@@ -9,6 +11,32 @@ export interface BlockDataCollection {
   blockOutputSchemas: Record<string, OutputSchema>
 }
 
+export function getBlockSchema(
+  block: SerializedBlock,
+  toolConfig?: ToolConfig
+): OutputSchema | undefined {
+  const isTrigger =
+    block.metadata?.category === 'triggers' ||
+    (block.config?.params as Record<string, unknown> | undefined)?.triggerMode === true
+
+  // Triggers use saved outputs (defines the trigger payload schema)
+  if (isTrigger && block.outputs && Object.keys(block.outputs).length > 0) {
+    return block.outputs as OutputSchema
+  }
+
+  // When a tool is selected, tool outputs are the source of truth
+  if (toolConfig?.outputs && Object.keys(toolConfig.outputs).length > 0) {
+    return toolConfig.outputs as OutputSchema
+  }
+
+  // Fallback to saved outputs for blocks without tools
+  if (block.outputs && Object.keys(block.outputs).length > 0) {
+    return block.outputs as OutputSchema
+  }
+
+  return undefined
+}
+
 export function collectBlockData(ctx: ExecutionContext): BlockDataCollection {
   const blockData: Record<string, unknown> = {}
   const blockNameMapping: Record<string, string> = {}
@@ -18,24 +46,21 @@ export function collectBlockData(ctx: ExecutionContext): BlockDataCollection {
     if (state.output !== undefined) {
       blockData[id] = state.output
     }
+  }
 
-    const workflowBlock = ctx.workflow?.blocks?.find((b) => b.id === id)
-    if (!workflowBlock) continue
+  const workflowBlocks = ctx.workflow?.blocks ?? []
+  for (const block of workflowBlocks) {
+    const id = block.id
 
-    if (workflowBlock.metadata?.name) {
-      blockNameMapping[normalizeName(workflowBlock.metadata.name)] = id
+    if (block.metadata?.name) {
+      blockNameMapping[normalizeName(block.metadata.name)] = id
     }
 
-    const blockType = workflowBlock.metadata?.id
-    if (blockType) {
-      const params = workflowBlock.config?.params as Record<string, unknown> | undefined
-      const subBlocks = params
-        ? Object.fromEntries(Object.entries(params).map(([k, v]) => [k, { value: v }]))
-        : undefined
-      const schema = getBlockOutputs(blockType, subBlocks)
-      if (schema && Object.keys(schema).length > 0) {
-        blockOutputSchemas[id] = schema
-      }
+    const toolId = block.config?.tool
+    const toolConfig = toolId ? getTool(toolId) : undefined
+    const schema = getBlockSchema(block, toolConfig)
+    if (schema && Object.keys(schema).length > 0) {
+      blockOutputSchemas[id] = schema
     }
   }
 

apps/sim/executor/utils/start-block.ts

@@ -378,8 +378,30 @@ function buildManualTriggerOutput(
   return mergeFilesIntoOutput(output, workflowInput)
 }
 
-function buildIntegrationTriggerOutput(workflowInput: unknown): NormalizedBlockOutput {
-  return isPlainObject(workflowInput) ? (workflowInput as NormalizedBlockOutput) : {}
+function buildIntegrationTriggerOutput(
+  workflowInput: unknown,
+  structuredInput: Record<string, unknown>,
+  hasStructured: boolean
+): NormalizedBlockOutput {
+  const output: NormalizedBlockOutput = {}
+
+  if (hasStructured) {
+    for (const [key, value] of Object.entries(structuredInput)) {
+      output[key] = value
+    }
+  }
+
+  if (isPlainObject(workflowInput)) {
+    for (const [key, value] of Object.entries(workflowInput)) {
+      if (value !== undefined && value !== null) {
+        output[key] = value
+      } else if (!Object.hasOwn(output, key)) {
+        output[key] = value
+      }
+    }
+  }
+
+  return mergeFilesIntoOutput(output, workflowInput)
 }
 
 function extractSubBlocks(block: SerializedBlock): Record<string, unknown> | undefined {
@@ -428,7 +450,7 @@ export function buildStartBlockOutput(options: StartBlockOutputOptions): Normali
       return buildManualTriggerOutput(finalInput, workflowInput)
 
     case StartBlockPath.EXTERNAL_TRIGGER:
-      return buildIntegrationTriggerOutput(workflowInput)
+      return buildIntegrationTriggerOutput(workflowInput, structuredInput, hasStructured)
 
     case StartBlockPath.LEGACY_STARTER:
       return buildLegacyStarterOutput(

apps/sim/executor/variables/resolvers/block.ts

@@ -1,10 +1,10 @@
-import { getBlockOutputs } from '@/lib/workflows/blocks/block-outputs'
 import {
   isReference,
   normalizeName,
   parseReferencePath,
   SPECIAL_REFERENCE_PREFIXES,
 } from '@/executor/constants'
+import { getBlockSchema } from '@/executor/utils/block-data'
 import {
   InvalidFieldError,
   type OutputSchema,
@@ -67,15 +67,9 @@ export class BlockResolver implements Resolver {
       blockData[blockId] = output
     }
 
-    const blockType = block.metadata?.id
-    const params = block.config?.params as Record<string, unknown> | undefined
-    const subBlocks = params
-      ? Object.fromEntries(Object.entries(params).map(([k, v]) => [k, { value: v }]))
-      : undefined
     const toolId = block.config?.tool
     const toolConfig = toolId ? getTool(toolId) : undefined
-    const outputSchema =
-      toolConfig?.outputs ?? (blockType ? getBlockOutputs(blockType, subBlocks) : block.outputs)
+    const outputSchema = getBlockSchema(block, toolConfig)
 
     if (outputSchema && Object.keys(outputSchema).length > 0) {
       blockOutputSchemas[blockId] = outputSchema

apps/sim/lib/workflows/blocks/block-outputs.ts

@@ -618,13 +618,6 @@ export function getToolOutputs(
   }
 }
 
-/**
- * Generates output paths for a tool-based block.
- *
- * @param blockConfig - The block configuration containing tools config
- * @param subBlocks - SubBlock values for tool selection and condition evaluation
- * @returns Array of output paths for the tool, or empty array on error
- */
 export function getToolOutputPaths(
   blockConfig: BlockConfig,
   subBlocks?: Record<string, SubBlockWithValue>
@@ -634,12 +627,22 @@ export function getToolOutputPaths(
   if (!outputs || Object.keys(outputs).length === 0) return []
 
   if (subBlocks && blockConfig.outputs) {
-    const filteredBlockOutputs = filterOutputsByCondition(blockConfig.outputs, subBlocks)
-    const allowedKeys = new Set(Object.keys(filteredBlockOutputs))
-
     const filteredOutputs: Record<string, any> = {}
+
     for (const [key, value] of Object.entries(outputs)) {
-      if (allowedKeys.has(key)) {
+      const blockOutput = blockConfig.outputs[key]
+
+      if (!blockOutput || typeof blockOutput !== 'object') {
+        filteredOutputs[key] = value
+        continue
+      }
+
+      const condition = 'condition' in blockOutput ? blockOutput.condition : undefined
+      if (condition) {
+        if (evaluateOutputCondition(condition, subBlocks)) {
+          filteredOutputs[key] = value
+        }
+      } else {
         filteredOutputs[key] = value
       }
     }