Trace refund approval flows with OpenRouter and OpenTelemetry

Description

Quick overview This workflow enriches a refund request, drafts an approval proposal with an AI agent, and waits for a human decision, so you can follow one execution across the wait with OpenTelemetry tracing. It is Exercise 5 from the n8n Production AI Playbook on Audit & Trace. How it works Receives a POST webhook request with a requestId, amount in cents, reason and a traceparent header. Enrich Request Sub-workflow validates the request and adds simulated customer context. Policy Service Call sends an HTTP request that carries the trace context to an echo service. Approval Proposal Agent drafts a proposal using an OpenRouter chat model. Return Approval Request responds with the proposal, executionId and resumeUrl. Wait for Human Approval pauses until a decision is posted to the resume URL. Validate Approval checks the decision and Record Approval saves it. Invalid decisions stop at Reject Approval. Setup Import, save and publish the Exercise 5 enrichment sub-workflow, then select it in Enrich Request Sub-workflow. Add an OpenRouter API credential to OpenRouter - Approval. Optionally enable OpenTelemetry tracing in Settings > OpenTelemetry. Select Execute workflow and POST {"requestId":"REQ-2001","amount":4999,"reason":"duplicate charge"} with a traceparent header. POST {"approved":true,"approver":"Demo reviewer"} to the returned resumeUrl, then search your traces by n8n.execution.id to find both parts of the run. Requirements n8n Cloud or a self-hosted n8n instance An OpenRouter API key The Exercise 5 enrichment sub-workflow A trace viewer such as Jaeger to inspect the spans (optional) Customization Replace Policy Service Call with a call to your own instrumented service so its spans join the same trace. Additional info No payment is processed. The approver field is a demo value. In production, take the reviewer's identity from an authenticated login and protect the resume endpoint. An n8n automation workflow template by Elvis Sarvia.

Community Metrics

Categories

• Automation
• AI

Tags

• n8n
• workflow
• http-request
• ai-agent
• openrouter-chat-model

Capabilities

• 3 nodes

Information