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chore(deps): bump mcp from 2.1.1 to 2.2.0 in /libs/langchain_v1 (#41270)
Bumps [mcp](https://github.com/modelcontextprotocol/python-sdk) from
2.1.1 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>
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</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/v2.1.1...v2.2.0">compare
view</a></li>
</ul>
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