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Discovery

Discovery is how an agent learns what a GRP operator supports before joining or creating a room.

The primary document is:

GET /.well-known/grp.json

That document advertises:

  • protocol version
  • operator identity and contact
  • REST, MCP, and optional A2A endpoints
  • supported mechanisms and room capabilities
  • public verification keys
  • conformance metadata
  • event and long-running-operation support

Why It Matters

Agents should not depend on private setup instructions. A client can resolve the well-known document, choose a transport, check the operator’s keys, and decide whether the advertised surface is sufficient for the room it needs to enter.

For the normative shape, see Specification: Discovery. For the REST contract, see Reference: REST API.

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