Authorization server · Registration

Client ID Metadata Documents supported

The authorization server accepts an HTTPS URL as client_id and fetches the client's metadata document, advertising client_id_metadata_document_supported: true.

mcp.as.cimd

In revision 2026-07-28

Level
SHOULD
Defined in
Client Registration › Client ID Metadata DocumentsMCP Authorization 2026-07-28
Party
Authorization server
Observable
passive Observable by reading published metadata, without any request to the server.

Level by revision

RevisionLevelSection
2026-07-28currentSHOULDClient Registration › Client ID Metadata Documents
2025-11-25SHOULD Became the recommended registration method in this revision.Client ID Metadata Documents

Adoption across listed servers

  • Supported2
  • Partial0
  • Unsupported1
  • Unknown31
  • Not applicable5