Description

Problem

The Agent node's structured output was not properly updating flow state template variables like {{output.decision}}. Variables remained as literal template strings instead of being replaced with actual values.

Root Cause

When structured output is enabled in Agent.ts, finalResponse is wrapped in markdown code blocks for display:

finalResponse = '```json\n' + JSON.stringify(response, null, 2) + '\n```'

This markdown-wrapped string was passed to processTemplateVariables(), which failed to parse it as JSON due to the markdown markers, leaving template variables unprocessed.

Solution

Create a separate outputForStateProcessing variable that contains clean JSON (without markdown wrapping) when structured output is enabled.

This ensures processTemplateVariables receives valid JSON that can:

1. Be parsed for nested property access (e.g., {{output.decision}})
2. Be used in string replacements (e.g., "Result: {{ output }}") without [object Object] coercion

Changes

• packages/components/nodes/agentflow/Agent/Agent.ts: Pass clean JSON string to processTemplateVariables when structured output is enabled, instead of the markdown-wrapped finalResponse

Testing

• Verified structured output values now correctly replace template variables in flow state
• Verified both full replacement ({{output}}) and nested property access ({{output.decision}}) work
• Verified partial string templates ("Result: {{ output }}") work without [object Object] issues