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HomeDocsClaude Documentation 16 Sep 2026
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MCP, plugins, skills, and hooks changedthird-party/claude-desktop/extensions

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6060The value is the same on every device and for every delivery method (device management, a local configuration file, or a [bootstrap server](/docs/third-party/claude-desktop/bootstrap)). On identity providers that accept any port on a loopback redirect URI (the [RFC 8252](https://datatracker.ietf.org/doc/html/rfc8252#section-7.3) native-app pattern), a registration of `http://127.0.0.1/callback` also matches.
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62With `"oauth": true`, Claude Desktop registers its own public client through dynamic client registration and lists this URI as the client's only redirect URI, so the authorization server must offer a registration endpoint and accept an `http` loopback redirect URI. With a client you registered yourself, set `oauth.clientId` and add the URI to that registration. If the registration uses `localhost` or another port, set `oauth.callbackHost` or `oauth.callbackPort` to match; both require `clientId`.
62With `"oauth": true`, Claude Desktop registers its own public client through dynamic client registration and lists this URI as the client's only redirect URI, so the authorization server must offer a registration endpoint and accept an `http` loopback redirect URI. With a client you registered yourself, set `oauth.clientId` and add the URI to that registration. If the registration uses `localhost` or another port, set `oauth.callbackHost` or `oauth.callbackPort` to match; both require `clientId`. [Set up sign-in for managed MCP servers](/docs/third-party/claude-desktop/mcp-sign-in) explains how to tell which servers need a client that you register, when a client secret is also required, and where the secret goes.
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6464An `http` or `sse` entry with no `oauth`, no `headersHelper`, and no `Authorization` header is treated as `"oauth": true` when its server asks for authentication (Claude Desktop 1.24012.0 or later). This redirect URI applies to MCP server sign-in only. [Gateway single sign-on](/docs/third-party/claude-desktop/gateway#set-up-single-sign-on) and [bootstrap sign-in](/docs/third-party/claude-desktop/bootstrap#provider-notes) register their own loopback redirect URI.
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