The PACT protocol, in full.
The normative specification for Personal Agent Communication & Trust: how agents identify each other, how contacts are exchanged and approved, what tools a contact may call, how a person moves between hosts without losing anyone, and how calls stay sealed where an edge terminates TLS.
What's inside
- Architecture
- Identity, certificates and mTLS
- Contact cards (vCard)
- Invites
- Adding contacts
- The agent MCP server and its tools
- Messaging and threads
- Permissions
- Hosting
- Deployment
- Security notes and what was left out
- Errors, limits, conformance
- Sealed envelopes
- Certificates
- Worked examples and test vectors
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