Native library reference. Extended CLI examples use
jacs-compat. This source reference can include unreleased changes; see the package guide for installation and MCP profiles for available tools.
Integration Examples
Choose a maintained guide for the integration you need. Each guide identifies its supported surface and trust requirements.
| Integration | Walkthrough |
|---|---|
| Standard MCP clients | Portable MCP setup and extended profiles |
| Signed MCP transport | Node.js or Python; matching wrappers and peer trust are required at both ends |
| A2A discovery and messaging | A2A how-to and official SDK examples |
| W3C DID export and request proofs | W3C DID how-to |
| HTTP request authentication | Node.js HTTP protocol; bind method, URL, body and audience, then authorize independently |
| Document middleware | Express, Koa, FastAPI; document verification is not route authorization |
| LangChain / LangGraph | Node.js and Python adapters |
Source examples and tests describe this checkout. Consult the release inventory before relying on an API from an installed package.