Skills by czlonkowski

Provides n8n workflow architectural patterns and examples for webhooks, HTTP APIs, databases, AI agents, and scheduled tasks. Contains examples that run a shell command (`pg_dump -h db.example.com mydb > backup.sql`), call external endpoints (e.g., `https://api.example.com/users`), and show credential use (`$credentials.encryptionKey`).

Expert guide for using n8n-mcp MCP tools effectively. Use when searching for nodes, validating configurations, accessing templates, managing workflows, or using any n8n-mcp tool. Provides tool selection guidance, parameter formats, and common patterns.

Operation-aware node configuration guidance. Use when configuring nodes, understanding property dependencies, determining required fields, choosing between get_node detail levels, or learning common configuration patterns by node type.

Write JavaScript code in n8n Code nodes. Use when writing JavaScript in n8n, using $input/$json/$node syntax, making HTTP requests with $helpers, working with dates using DateTime, troubleshooting Code node errors, or choosing between Code node modes.

Interpret validation errors and guide fixing them. Use when encountering validation errors, validation warnings, false positives, operator structure issues, or need help understanding validation results. Also use when asking about validation profiles, error types, or the validation loop process.

Validate n8n expression syntax and fix common errors. Use when writing n8n expressions, using {{}} syntax, accessing $json/$node variables, troubleshooting expression errors, or working with webhook data in workflows.

This skill documents how to write Python in n8n Code nodes and provides patterns, examples, and best practices. It includes examples that perform HTTP calls (e.g., `https://api.example.com/data` via `urllib.request.urlopen`) and examples that handle credentials like `api_key` and Basic Auth (`username`/`password`).