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Understanding Authorization in MCP changeddocs/draft/tutorials/security/authorization

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Upstream edited this page at 9 Nov 2026 03:02 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 9 Nov 2026 03:07 UTC.

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201201### Client ID Metadata Documents
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203With a [Client ID Metadata Document](https://datatracker.ietf.org/doc/html/draft-ietf-oauth-client-id-metadata-document-00) (CIMD), the client uses an HTTPS URL as its `client_id` and hosts a JSON document there. The authorization server fetches the document and validates it when it receives an authorization request.
203With a [Client ID Metadata Document](https://datatracker.ietf.org/doc/html/draft-ietf-oauth-client-id-metadata-document-03) (CIMD), the client uses an HTTPS URL as its `client_id` and hosts a JSON document there. The authorization server fetches the document and validates it when it receives an authorization request.
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205205```json theme={null}
206206{
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789789* **[OpenID Connect Discovery 1.0](https://openid.net/specs/openid-connect-discovery-1_0.html)**: The alternative to RFC 8414
790790* **[RFC 8707](https://datatracker.ietf.org/doc/html/rfc8707)**: Resource Indicators
791791* **[RFC 9207](https://datatracker.ietf.org/doc/html/rfc9207)**: Authorization Server Issuer Identification
792* **[OAuth Client ID Metadata Document](https://datatracker.ietf.org/doc/html/draft-ietf-oauth-client-id-metadata-document-00)**: Client IDs that are URLs
792* **[OAuth Client ID Metadata Document](https://datatracker.ietf.org/doc/html/draft-ietf-oauth-client-id-metadata-document-03)**: Client IDs that are URLs
793793* **[RFC 7591](https://datatracker.ietf.org/doc/html/rfc7591)**: Dynamic Client Registration
794794* **[RFC 6750](https://datatracker.ietf.org/doc/html/rfc6750)**: Bearer Token Usage
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