Extending custom nodes in Lang-Agent requires the development of both front-end components and back-end logic:
Front-end development (React)
- existsrc/nodesDirectory to create a new component (e.g. MyNode.tsx)
- Implement node UI: inherit base node properties, define parameter input form
- Registered nodes: insrc/nodes/index.tsAdd node type identifiers and icons to
Back-end development (Python)
- existlang_agent/nodesDirectory to create processing classes (e.g. my_node.py)
- Realize the core logic:
- Inherit BaseNode class
- Rewrite execute method to handle business logic
- Define input/output parameter checksum rules
- Registered nodes: inlang_agent/nodes/__init__.pyImporting new classes
Development proposals
- References to built-in node implementations (e.g. counter_node)
- Follow state variable naming conventions (to avoid conflicts)
- Adding TypeScript type definitions to complex nodes
- Provide documentation for node usage
After completing the development, the new node will automatically appear in the Resources panel, which supports combining it with other nodes.
This answer comes from the articleLang-Agent: a LangGraph-based platform for visualizing the configuration of AI intelligencesThe
May not be reproduced without permission:AI productivity tools " As a developer, how to extend custom function nodes based on Lang-Agent?
