Where Can I Find Documentation on Modifying Custom Nodes for AI Tools?

Below is an overview of the documentation and examples that can help you modify your custom nodes to operate as AI tools in n8n.

AI Tools in n8n

In n8n, AI tools are special sub-nodes that an AI Agent node can connect to in order to access external resources or perform specific actions. The available tools already include options like a custom workflow tool, a code execution tool, and an HTTP request tool. These examples can serve as blueprints for how to build or modify your own custom nodes to act as tools.

Key Documentation and Resources

• What's a tool in AI?
  This section of the documentation explains the concept behind AI tools in n8n, detailing their role as add-ons that provide extra context and functionality to AI agents. It also highlights examples of how tools can be implemented or connected.
  (See the “What's a tool in AI?” documentation in your n8n docs.)

• Tools Agent Node Documentation
  The Tools Agent node is designed to work with external tools following the LangChain tool calling interface. Reviewing this documentation can show you the expected behavior and output formatting for tools in n8n.
  (See the Tools Agent node documentation for details on tool integration and examples.)

• Dynamic Parameter Specification with $fromAI()
  If you need your custom tool to have dynamic parameters that the AI can set, check out the examples on how to use the $fromAI() function. This is useful when you want to allow your AI agent to determine certain parameters at runtime.

Next Steps

1. Review the "What's a tool in AI?" docs:
   This will give you the conceptual foundation for how tools interact with AI agents within the n8n ecosystem.

2. Examine the Tools Agent documentation:
   The Tools Agent node documentation outlines how to integrate with external APIs and services. Noting how existing tools adhere to the LangChain tool calling interface can help you ensure your custom node follows similar patterns.

3. Check out the examples:
   Look for examples like the Custom n8n Workflow Tool, Custom Code Tool, and HTTP Request Tool in the documentation. These examples provide concrete templates on how to structure and format custom nodes as AI tools.

By aligning your custom nodes with these guidelines and patterns, you can enable them to function as AI tools within n8n workflows.

If you have further specific questions on implementation details, feel free to ask!