A relay serves /.well-known/openmcp.json; a catalog probes it (the
descriptor from the relay's own origin, then initialize and tools/list)
and lists only what it found; a client reaches every relay through the
catalog's REST, its own MCP endpoint, or signed webhooks. Landing page at
/openmcp, the document at /docs/openmcp, registered in the same four
places as the other specs. Reference implementation at
github.com/logicsrc/openmcp.
Claude-Session: https://claude.ai/code/session_01FMT2v1YxmgcDuionrfT719
Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>
