Diagnose n8n workflow errors from messages or screenshots.
npx skills add https://github.com/l3mpire/claude-skills --skill n8n-debugger-l3mpire
Please help me install this Agent Skill. Skill: n8n-debugger Source: https://github.com/l3mpire/claude-skills/tree/main/n8n-debugger Command: npx skills add https://github.com/l3mpire/claude-skills --skill n8n-debugger-l3mpire
Debugs n8n workflow errors from error messages, screenshots, or both. Use this skill whenever the user shares an n8n error, a broken workflow, an unexpected output, or asks why a workflow is not working — even if they just paste an error message, say "it's broken", "it's not working", or "why does this fail". Covers all node types, API errors, expression errors, credential issues, data mapping problems, and logic bugs.
You will identify the root cause, explain it clearly, and give precise step-by-step instructions to fix it — without rewriting the JSON for the user. It covers all n8n error types (node, API, expression, credential, data-mapping, logic) and provides a structured approach to resolution.
Describe the error or share a screenshot and I will identify the root cause, explain it clearly, and provide a precise, step-by-step fix plan.
High-intent search queries and answers about installing and using this skill.
To debug n8n workflow errors, you can provide the error message or screenshot. The system diagnoses the root cause, explains it clearly, and provides precise step-by-step instructions to fix node, API, or expression errors without rewriting your JSON payload.
n8n workflow failures with API errors or unexpected outputs occur due to misconfigurations, credential issues, or data mapping problems. Analyzing the specific error data using a structured taxonomy identifies the root cause and guides the precise resolution.
Yes, you can diagnose n8n node errors and data mapping problems without sharing your full JSON payload. The system requires only clear error data to classify issues and guide precise fixes, ensuring your sensitive payload data remains private.
The best way to fix n8n credential issues and expression errors is to apply a structured debugging approach. By classifying the specific error type from the provided message or screenshot, you get targeted instructions to resolve misconfigurations and logic bugs.
n8n automation debugging works for all node types and data flows. It comprehensively covers node errors, API failures, expression errors, credential issues, and logic bugs across any n8n workflow, provided clear error data is supplied for analysis.
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