MCP Python SDK v1.30.0

MCP Python SDK releases published MCP Python SDK v1.30.0. This release-watch entry was generated from the project's official GitHub release feed and is kept separate from human-reviewed editorial analysis. Release notes: Maintenance release of the 1.x line. 2.x is the current line; 1.x docs are at https://py.sdk.modelcontextprotocol.io/v1/ . A few defaults changed in this release. If you run a server or client on 1.x, skim these first: Behaviour changes HTTP client redirects are only followed within the endpoint's origin ( 3448 ) streamable http client and sse client follow a redirect only if it stays on the same scheme, host and port (or upgrades http to https on the same host). A redirect anywhere else now fails the request with httpx.HTTPStatusError . If that other URL is the server you meant, use it as the endpoint URL. The follow redirects setting on an httpx.AsyncClient you pass in is no longer used for MCP requests, so you don't need it for the trailing-slash redirect any more. OAuthClientProvider applies the same rule to its own requests. Idle Streamable HTTP sessions now expire ( 3426 ) A…

• Review the official MCP Python SDK releases release notes before upgrading.
• Check compatibility, migration, and security notes against your current agent stack.
• Run focused regression tests before production rollout.