Romuald Członkowski Skills

Guides the design of n8n AI agents and LLM chains built from the LangChain AI nodes.

Writes JavaScript for n8n Code nodes, covering $input, $json and $node syntax, HTTP helpers and date handling.

Writes native Python for n8n Code nodes and migrates older Pyodide-based code.

Wires error handling into n8n workflows so that failures are visible, structured and recoverable.

Validates n8n expression syntax and fixes common errors when mapping data between nodes.

Guides use of the n8n-mcp tools: searching nodes, validating configurations, using templates and managing workflows and credentials.

Guides node configuration in n8n: property dependencies, required fields and common patterns by node type.

Interprets n8n validation errors and warnings, and guides the fix.

Supplies workflow architecture patterns drawn from real n8n workflows, such as webhook processing and HTTP API integration.