n8n Custom Code Tool
Write and debug JavaScript or Python for the AI-callable n8n Custom Code Tool, including schemas, sandbox limits, and return formats.
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Write and debug JavaScript or Python for the AI-callable n8n Custom Code Tool, including schemas, sandbox limits, and return formats.
Design visible, structured, recoverable n8n failures using error outputs, retries, Error Trigger workflows, and HTTP error responses.
Select, verify, and safely switch n8n MCP instances across production, staging, teams, or clients, especially before credential writes.
Build reusable n8n sub-workflows with typed inputs, all-vs-each execution, discoverable naming, and agent-tool exposure.
Route n8n MCP workflow design, editing, validation, testing, deployment, credential, execution, and debugging tasks to specialist guidance.
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