dependabot[bot] opened a new pull request, #44326: URL: https://github.com/apache/superset/pull/44326
Bumps [mcp](https://github.com/modelcontextprotocol/python-sdk) from 1.29.1 to 2.2.0. <details> <summary>Release notes</summary> <p><em>Sourced from <a href="https://github.com/modelcontextprotocol/python-sdk/releases";>mcp's releases</a>.</em></p> <blockquote> <h2>v2.2.0</h2> <p><code>pip install -U mcp</code>. Docs: <a href="https://py.sdk.modelcontextprotocol.io/";>https://py.sdk.modelcontextprotocol.io/</a></p> <p>A few defaults changed in this release. If you run a server or client on 2.x, skim these first:</p> <h2>Behaviour changes</h2> <p><strong>HTTP client redirects are only followed within the endpoint's origin</strong> (<a href="https://redirect.github.com/modelcontextprotocol/python-sdk/issues/3397";>#3397</a>)</p> <ul> <li><code>Client("https://...")</code>, <code>streamable_http_client</code> and <code>sse_client</code> follow a redirect only if it stays on the same scheme, host and port (or upgrades <code>http</code> to <code>https</code> on the same host).</li> <li>A redirect anywhere else is not followed: the call fails with <code>MCPError</code> and the session stays usable (an SSE connect fails with <code>httpx2.HTTPStatusError</code>). If that other URL is the server you meant, use it as the endpoint URL.</li> <li>The <code>follow_redirects</code> setting on an <code>httpx2.AsyncClient</code> you pass in is no longer used for MCP requests, so you don't need it for the trailing-slash redirect any more.</li> <li>The OAuth providers apply the same rule to their own requests.</li> </ul> <p><strong>Idle Streamable HTTP sessions now expire (legacy <=2025-11-25 spec(</strong> (<a href="https://redirect.github.com/modelcontextprotocol/python-sdk/issues/3395";>#3395</a>)</p> <ul> <li>A stateful session with nothing in flight for 30 minutes is closed. The client's next request gets a 404 and it has to initialize again.</li> <li>Clients that keep the GET stream open (the SDK's <code>Client</code> does) are not affected. Neither are stateless servers or 2026-07-28 connections.</li> <li>A server also holds at most 10 000 sessions at once; beyond that, new sessions get a 503.</li> <li>To turn either off: <code>mcp.run(transport="streamable-http", session_idle_timeout=None, max_sessions=None)</code> (also on <code>streamable_http_app()</code> and <code>run_streamable_http_async()</code>).</li> </ul> <p><strong>The OAuth client checks the authorization server's <code>issuer</code> on the legacy path too</strong> (<a href="https://redirect.github.com/modelcontextprotocol/python-sdk/issues/3398";>#3398</a>)</p> <ul> <li>For servers without protected resource metadata, authorization server metadata whose <code>issuer</code> isn't the server's own origin is now rejected with <code>OAuthFlowError: Authorization server metadata issuer mismatch</code>. The protected-resource-metadata path has done this since 2.0.</li> <li>A 403 that isn't an <code>insufficient_scope</code> challenge is returned to the caller instead of retried.</li> <li>If protected resource metadata can't be fetched because of a 5xx/429, the flow now stops instead of falling back to the legacy endpoints.</li> </ul> <p><strong>Two new <code>MCPDeprecationWarning</code>s</strong> (<a href="https://redirect.github.com/modelcontextprotocol/python-sdk/issues/3435";>#3435</a>, <a href="https://redirect.github.com/modelcontextprotocol/python-sdk/issues/3447";>#3447</a>)</p> <ul> <li><code>ClientCredentialsOAuthProvider</code> / <code>PrivateKeyJWTOAuthProvider</code> without <code>issuer=</code>. Pass your authorization server's issuer URL; 3.0 will require it.</li> <li><code>AuthSettings</code> with <code>resource_server_url</code> set but <code>validate_token_resource</code> unset. Set it to <code>True</code> or <code>False</code>; 3.0 defaults it to <code>True</code>.</li> <li>Both keep working as before in 2.x; this mostly matters if your tests turn warnings into errors.</li> </ul> <h2>New</h2> <ul> <li><code>AuthSettings.validate_token_resource</code>: only accept tokens your <code>TokenVerifier</code> reports as issued for this server (<a href="https://redirect.github.com/modelcontextprotocol/python-sdk/issues/3447";>#3447</a>).</li> <li><code>issuer=</code> on <code>ClientCredentialsOAuthProvider</code> and <code>PrivateKeyJWTOAuthProvider</code> (<a href="https://redirect.github.com/modelcontextprotocol/python-sdk/issues/3398";>#3398</a>).</li> <li><code>session_idle_timeout=</code> and <code>max_sessions=</code> on the Streamable HTTP server entry points (<a href="https://redirect.github.com/modelcontextprotocol/python-sdk/issues/3395";>#3395</a>).</li> </ul> <h2>Fixes</h2> <ul> <li>A client <code>DELETE</code> frees its session immediately, and a refused opening request no longer leaves a session behind (<a href="https://redirect.github.com/modelcontextprotocol/python-sdk/issues/2455";>#2455</a>, <a href="https://redirect.github.com/modelcontextprotocol/python-sdk/issues/3228";>#3228</a>, <a href="https://redirect.github.com/modelcontextprotocol/python-sdk/issues/3300";>#3300</a>).</li> <li><code>$ref</code>s in a tool's <code>outputSchema</code> resolve within that schema only; an unresolvable one surfaces as <code>RuntimeError: Invalid schema for tool ...</code> (<a href="https://redirect.github.com/modelcontextprotocol/python-sdk/issues/3394";>#3394</a>).</li> </ul> <h2>Known gaps</h2> <p>The tasks extension (SEP-2663), DPoP (SEP-1932) and the <code>jwt-bearer</code> grant are not implemented yet; <a href="https://github.com/modelcontextprotocol/python-sdk/blob/main/ROADMAP.md";>https://github.com/modelcontextprotocol/python-sdk/blob/main/ROADMAP.md</a> tracks them.</p> <h2>What's Changed</h2> <ul> <li>Gate draft PRs too and rewrite the auto-close comment by <a href="https://github.com/maxisbey";><code>@maxisbey</code></a> in <a href="https://redirect.github.com/modelcontextprotocol/python-sdk/pull/3378";>modelcontextprotocol/python-sdk#3378</a></li> <li>Resolve tool output-schema references within the schema document only by <a href="https://github.com/maxisbey";><code>@maxisbey</code></a> in <a href="https://redirect.github.com/modelcontextprotocol/python-sdk/pull/3394";>modelcontextprotocol/python-sdk#3394</a></li> <li>Expire idle Streamable HTTP sessions by default and cap concurrent sessions by <a href="https://github.com/maxisbey";><code>@maxisbey</code></a> in <a href="https://redirect.github.com/modelcontextprotocol/python-sdk/pull/3395";>modelcontextprotocol/python-sdk#3395</a></li> <li>Validate the authorization server metadata issuer on every discovery path by <a href="https://github.com/maxisbey";><code>@maxisbey</code></a> in <a href="https://redirect.github.com/modelcontextprotocol/python-sdk/pull/3398";>modelcontextprotocol/python-sdk#3398</a></li> </ul> <!-- raw HTML omitted --> </blockquote> <p>... (truncated)</p> </details> <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/modelcontextprotocol/python-sdk/commit/9972c21aa42054fb1450c5fc614761ed11847ec6";><code>9972c21</code></a> Replace RootModel wrappers with type aliases and TypeAdapter validation (<a href="https://redirect.github.com/modelcontextprotocol/python-sdk/issues/3470";>#3470</a>)</li> <li><a href="https://github.com/modelcontextprotocol/python-sdk/commit/fd66270926b98b28e6cca21b35ec5ba0e4855892";><code>fd66270</code></a> docs: refresh translations, and translate pages in parallel (<a href="https://redirect.github.com/modelcontextprotocol/python-sdk/issues/3458";>#3458</a>)</li> <li><a href="https://github.com/modelcontextprotocol/python-sdk/commit/08a3bc8eaf5bb69a6cb05ac708a86f5325977c20";><code>08a3bc8</code></a> docs: ask for AI disclosure on comments too (<a href="https://redirect.github.com/modelcontextprotocol/python-sdk/issues/3459";>#3459</a>)</li> <li><a href="https://github.com/modelcontextprotocol/python-sdk/commit/7bb486a10fa68681b262f063e36438cc45260f7d";><code>7bb486a</code></a> docs: stop presenting the in-memory client as the way to connect (<a href="https://redirect.github.com/modelcontextprotocol/python-sdk/issues/3443";>#3443</a>)</li> <li><a href="https://github.com/modelcontextprotocol/python-sdk/commit/0c9136841ff092987a20700ff9c2c9789bda2f40";><code>0c91368</code></a> Add AuthSettings.validate_token_resource to check a bearer token's resource (...</li> <li><a href="https://github.com/modelcontextprotocol/python-sdk/commit/9771e6b59c775ecb2584849d389ce9efba23a541";><code>9771e6b</code></a> Keep following a relative redirect when the endpoint URL carries userinfo (<a href="https://redirect.github.com/modelcontextprotocol/python-sdk/issues/3";>#3</a>...</li> <li><a href="https://github.com/modelcontextprotocol/python-sdk/commit/a925e558938720d2a0f032c05ee3d72d26b80546";><code>a925e55</code></a> Bump the locked versions of eight dev and test dependencies (<a href="https://redirect.github.com/modelcontextprotocol/python-sdk/issues/3449";>#3449</a>)</li> <li><a href="https://github.com/modelcontextprotocol/python-sdk/commit/e8b94867acee4d2752e22c8b7008d703ba694b32";><code>e8b9486</code></a> Bump pymdown-extensions from 11.0 to 11.0.1 (<a href="https://redirect.github.com/modelcontextprotocol/python-sdk/issues/3285";>#3285</a>)</li> <li><a href="https://github.com/modelcontextprotocol/python-sdk/commit/c6762e821c527925f0b617db216d00fbd1d0bf99";><code>c6762e8</code></a> Follow redirects only within the MCP endpoint's origin (<a href="https://redirect.github.com/modelcontextprotocol/python-sdk/issues/3397";>#3397</a>)</li> <li><a href="https://github.com/modelcontextprotocol/python-sdk/commit/5fd3abc5481de7891a2c27145e8289bca3f0da3a";><code>5fd3abc</code></a> Skip automatic docs previews for fork PRs and drop the setup-uv retry steps (...</li> <li>Additional commits viewable in <a href="https://github.com/modelcontextprotocol/python-sdk/compare/v1.29.1...v2.2.0";>compare view</a></li> </ul> </details> <br /> [](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores) Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. 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