Connect a service that isn't in the list changedclaude-tag/admins/connections/custom
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Upstream edited this page at 26 Sep 2026 05:31 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 26 Sep 2026 05:37 UTC.
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3535### Credential types
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37| Type | Use for |
38| :---------------------------------------------- | :---------------------------------------------------------------------------------------------------------- |
39| **Bearer** | An API key or token sent as `Authorization: Bearer <token>`. Most SaaS REST APIs. |
40| **Basic** | HTTP Basic authentication (`Authorization: Basic <base64(user:password)>`) |
41| **Body parameter** | A token the API expects in the request body or query string instead of a header |
42| **AWS SigV4** | AWS service APIs on `amazonaws.com` endpoints that require Signature Version 4 signing |
43| **GCP access token (with Service Account Key)** | Google Cloud APIs; the proxy exchanges the SA key for an access token |
44| **GCP IAP (with Service Account Key)** | Google Cloud services behind Identity-Aware Proxy |
45| **OAuth 2.0 JWT bearer** | APIs that accept a JWT signed with your private key in exchange for an access token (DocuSign, for example) |
46| **OAuth 2.0 client credentials** | Machine-to-machine OAuth with a client ID and secret |
47| **MCP Connector** | OAuth sign-in. Sign in once as an admin; the agent acts as that account. |
37| Type | Use for |
38| :---------------------------------------------- | :-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
39| **Bearer** | An API key or token sent as `Authorization: Bearer <token>`. Most SaaS REST APIs. |
40| **Basic** | HTTP Basic authentication (`Authorization: Basic <base64(user:password)>`) |
41| **Body parameter** | A token the API expects in the request body or query string instead of a header |
42| **AWS SigV4** | AWS service APIs on `amazonaws.com` endpoints that require Signature Version 4 signing |
43| **GCP access token (with Service Account Key)** | Google Cloud APIs; the proxy exchanges the SA key for an access token |
44| **GCP IAP (with Service Account Key)** | Google Cloud services behind Identity-Aware Proxy |
45| **OAuth 2.0 JWT bearer** | APIs that accept a JWT signed with your private key in exchange for an access token (DocuSign, for example) |
46| **OAuth 2.0 client credentials** | Machine-to-machine OAuth with a client ID and secret |
47| **MCP Connector** | OAuth sign-in to one of the providers in the picker or to a [remote MCP connector](/docs/connectors/custom/add-unlisted) your organization has added on claude.ai. Sign in once as an admin; the agent acts as that account. Other OAuth APIs can't be connected this way. |
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4949<Note>The **MCP Connector** type signs in to a connector from your organization's connector library. If you register a new connector from this form with **Add custom connector…**, that connector is added to the library on the **Connectors** page at [`claude.ai/admin-settings/connectors`](https://claude.ai/admin-settings/connectors), not only to the bundle. Removing the connection from the bundle later leaves the library entry in place.</Note>
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