n8n

n8n is a workflow automation platform that lets you build and deploy AI-powered workflows using visual nodes, code (JavaScript or Python), and integrations. Start with templates like Webhook → Code → HTTP Request, then add AI agents, LangChain integration, and data transforms. Deploy via Docker, npm, or self-hosted instances.

Yes, n8n supports both JavaScript and Python in the Code node for custom logic. You can write data transformations, call external APIs, integrate LangChain for AI chains, and handle authentication and error handling directly in code nodes within your workflow.

Diagnose n8n errors by inspecting run logs, examining input and output data at each node, and testing code nodes individually. Check webhook configurations, credential setup, and error handling logic. Use the debugger to trace data flow and identify where transformations or integrations fail.

Scale n8n by enabling queue mode to process workflows asynchronously and distribute load across workers. Deploy using Docker for containerized scaling or use self-hosted instances with API access. Configure webhooks and background jobs to handle high-throughput automation without blocking.

Yes, n8n supports developing custom nodes beyond built-in integrations. Build custom nodes using JavaScript, configure credentials and authentication patterns, and extend n8n's capabilities for specialized workflows, data transformations, and AI agent integrations specific to your use case.

Yes, n8n fully supports Docker deployments and self-hosted setups. Run n8n as a containerized service, configure persistent storage, set up webhooks and API endpoints, and manage credentials securely. Self-hosted deployments enable queue mode, custom nodes, and full control over your automation infrastructure.