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Authentication for connectors changedconnectors/building/authentication

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3131Claude supports the following authentication types for remote MCP servers.
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33| Type | Description | Availability |
34| ----------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------- |
35| `oauth_dcr` | OAuth 2.0 with Dynamic Client Registration ([RFC 7591](https://www.rfc-editor.org/rfc/rfc7591)) | Supported by default |
36| `oauth_cimd` | OAuth 2.0 with [Client ID Metadata Document](https://modelcontextprotocol.io/specification/2025-11-25/basic/authorization#client-id-metadata-documents) | Supported by default |
37| `oauth_anthropic_creds` | OAuth 2.0 with [Anthropic-held client credentials](#anthropic-held-client-credentials) | Contact `[email protected]` |
38| `custom_connection` | Custom URL or OAuth client credentials [entered at connection time](#credentials-entered-at-connection-time) | Contact `[email protected]` |
39| `static_headers` | Fixed credential (API key or bearer token) entered by an organization Owner as a request header when adding the connector | Beta, for a limited set of organizations |
40| `none` | No authentication (authless server) | Supported by default. To leave some tools open and require sign-in for others, see [Lazy authentication](/docs/connectors/building/lazy-authentication) |
33| Type | Description | Availability |
34| - | - | - |
35| `oauth_dcr` | OAuth 2.0 with Dynamic Client Registration ([RFC 7591](https://www.rfc-editor.org/rfc/rfc7591)) | Supported by default |
36| `oauth_cimd` | OAuth 2.0 with [Client ID Metadata Document](https://modelcontextprotocol.io/specification/2025-11-25/basic/authorization#client-id-metadata-documents) | Supported by default |
37| `oauth_anthropic_creds` | OAuth 2.0 with [Anthropic-held client credentials](#anthropic-held-client-credentials) | Contact `[email protected]` |
38| `custom_connection` | Custom URL or OAuth client credentials [entered at connection time](#credentials-entered-at-connection-time) | Contact `[email protected]` |
39| `static_headers` | Fixed credential (API key or bearer token) entered by an organization Owner as a request header when adding the connector | Beta, for a limited set of organizations |
40| `none` | No authentication (authless server) | Supported by default. To leave some tools open and require sign-in for others, see [Lazy authentication](/docs/connectors/building/lazy-authentication) |
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4242If your server URL varies per customer, read [Servers with per-customer URLs](#servers-with-per-customer-urls) before you pick a type.
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6363You choose the URL option and the authentication type separately, but the URL option limits which authentication types work. The table shows which combinations work. Request headers (`static_headers`) are set up by the organization Owner who adds the connector and aren't covered here.
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65| Type | Universal URL | Multiple URLs | URL pattern |
66| ----------------------- | ------------- | ------------- | ----------- |
67| `oauth_dcr` | Yes | Yes | Yes |
68| `oauth_cimd` | Yes | Yes | Yes |
69| `oauth_anthropic_creds` | Yes | Yes | No |
70| `custom_connection` | Yes | No | Yes |
71| `none` | Yes | Yes | Yes |
65| Type | Universal URL | Multiple URLs | URL pattern |
66| - | - | - | - |
67| `oauth_dcr` | Yes | Yes | Yes |
68| `oauth_cimd` | Yes | Yes | Yes |
69| `oauth_anthropic_creds` | Yes | Yes | No |
70| `custom_connection` | Yes | No | Yes |
71| `none` | Yes | Yes | Yes |
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7373For a URL pattern, use these authentication types in order of preference:
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