Integration Examples

This page is now a curated index of examples that still line up with the current APIs. The old monolithic example chapter mixed outdated agent APIs with supported workflows.

MCP

• jacs-mcp/README.md
  • Best starting point for the full Rust MCP server
• jacspy/examples/mcp/server.py
  • Python FastMCP server wrapped with JACSMCPServer
• jacspy/examples/mcp/client.py
  • Python FastMCP client wrapped with JACSMCPClient
• jacsnpm/examples/mcp.stdio.server.js
  • Node stdio server with createJACSTransportProxy()
• jacsnpm/examples/mcp.stdio.client.js
  • Node stdio client with signed transport

LangChain / LangGraph

• jacspy/examples/langchain/signing_callback.py
  • Best current Python example for signed LangGraph tool execution
• jacsnpm/examples/langchain/basic-agent.ts
  • Node LangChain.js agent using JACS tools
• jacsnpm/examples/langchain/signing-callback.ts
  • Node auto-signing pattern for LangGraph-style flows

A2A

• jacspy/tests/test_a2a_server.py
  • Best current Python reference for generated .well-known routes
• jacsnpm/src/a2a-server.js
  • Node Express A2A discovery middleware
• jacsnpm/examples/a2a-agent-example.js
  • Node A2A card and artifact demo
• jacs/tests/a2a_cross_language_tests.rs
  • Cross-language behavior reference for signing and verification

HTTP / App Middleware

• jacspy/examples/http/server.py
  • FastAPI app with JacsMiddleware
• jacspy/examples/http/client.py
  • Python client consuming signed responses
• jacsnpm/examples/expressmiddleware.js
  • Express middleware example

Rule Of Thumb

If an example and a higher-level prose page disagree, trust:

1. the current binding README
2. the current tests
3. the example that imports the API you intend to use today