Fix Agent node structured output not updating flow state variables (#5548)

AhmedMostafa16 · web-flow · commit 47de40761f48 · 2025-12-05T11:37:15.000Z
Fix Agent state processing for structured output

Updated the Agent class to handle structured output by passing a JSON string instead of a markdown-wrapped response to the `processTemplateVariables` function. This change allows for proper nested property access and resolves string replacement issues with object coercion.
diff --git a/packages/components/nodes/agentflow/Agent/Agent.ts b/packages/components/nodes/agentflow/Agent/Agent.ts
@@ -1394,7 +1394,9 @@ class Agent_Agentflow implements INode {
             }
 
             // Process template variables in state
-            newState = processTemplateVariables(newState, finalResponse)
+            const outputForStateProcessing =
+                isStructuredOutput && typeof response === 'object' ? JSON.stringify(response, null, 2) : finalResponse
+            newState = processTemplateVariables(newState, outputForStateProcessing)
 
             /**
              * Remove the temporarily added image artifact messages before storing

Original file line number	Diff line number	Diff line change
`@@ -1394,7 +1394,9 @@ class Agent_Agentflow implements INode {`
`1394`	`1394`	`}`
`1395`	`1395`
`1396`	`1396`	`// Process template variables in state`
`1397`		`- newState = processTemplateVariables(newState, finalResponse)`
	`1397`	`+ const outputForStateProcessing =`
	`1398`	`+ isStructuredOutput && typeof response === 'object' ? JSON.stringify(response, null, 2) : finalResponse`
	`1399`	`+ newState = processTemplateVariables(newState, outputForStateProcessing)`
`1398`	`1400`
`1399`	`1401`	`/**`
`1400`	`1402`	`* Remove the temporarily added image artifact messages before storing`