`writeEvent` built the SSE frame with `fmt.Fprintf(&b, "data: %s\n\n",
string(evt.Data))`, which copies the payload into a fresh string and
then again into the buffer, growing it via repeated `bytes.growSlice`
doublings. For large MCP responses (e.g. ~162KB `tools/list`) under a
burst of concurrent writes this ~3x amplifies allocations and peak heap.
Write the payload directly into a pre-grown buffer instead. Output
framing is byte-identical. Benchmarks (162KB payload): 517KB->172KB per
op, 9->4 allocs/op, ~3x faster.
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Co-authored-by: Yaroslav <yarolegovich@gmail.com>
`streamableClientConn.setMCPHeaders` sets `Mcp-Protocol-Version` only
from `c.initializedResult`, which is populated exclusively through the
unexported `clientConnection.sessionUpdated` hook. `Client.Connect`
reaches that hook via a type assertion on the `Connection` returned by
the `Transport`:
```go
if hc, ok := cs.mcpConn.(clientConnection); ok {
hc.sessionUpdated(cs.state)
}
```
That assertion silently fails whenever the `Connection` is wrapped by
another type that exposes only the exported `Connection` interface.
`c.initializedResult` then stays `nil` for the life of the session, and
every `SEP-2575` (>= `2026-07-28`) request sent through that connection
is missing the header. Servers that validate the header per spec reject
the request with `400 Bad Request`, closing the connection.
Every SEP-2575 request already carries its own `_meta.protocolVersion`
field via `injectRequestMeta`. `setMCPHeaders` now reads the protocol
version from the outgoing message first, falling back to
`c.initializedResult` and then the request context.
This is currently breaking the GitHub MCP with the 1.7-pre releases of
this module.
Fixes#1109
Co-authored-by: eu.anthropic.claude-sonnet-5 via Crush <charmcrush@users.noreply.github.com>
This change adds NewTokenSource and InitialTokenSource fields to
AuthorizationCodeHandlerConfig. NewTokenSource enables wrapping the
underlying token source to intercept token refreshes. InitialTokenSource
enables configuring the token source used by the
AuthorizationCodeHandler on initialization. Together these features
facilitate persisting OAuth2 sessions across restarts.
Includes a package example demonstrating the persistence pattern.
Fixes: #901.
See #901 for the previous discussion behind this design.
---------
Co-authored-by: Guglielmo Colombo <guglielmoc@google.com>
Co-authored-by: Jonathan Amsterdam <jba@users.noreply.github.com>
## Summary
- Add `resultType: "complete"` to non-MRTR server result responses for
2026-07-28 requests.
- Cover `server/discover`, list methods, and completion responses, and
update expected conformance/example output.
## Why
Fixes#1032. The 2026-07-28 schema requires `resultType` on result
objects, but only the MRTR-capable results were setting it.
## Validation
- `go test ./mcp -run
'Test(ServerSessionHandle|CompleteResult|ClientConnectDiscover|InMemory_E2E_Discover)'
-count=1` — passed\n- `go test ./mcp -count=1` — passed\n- `go test
./...` — passed\n- `go vet ./...` — passed
---------
Co-authored-by: ychampion <ychampion@users.noreply.github.com>
Co-authored-by: Guglielmo Colombo <guglielmoc@google.com>
Bumps the codeql-action group with 3 updates:
[github/codeql-action/init](https://github.com/github/codeql-action),
[github/codeql-action/analyze](https://github.com/github/codeql-action)
and
[github/codeql-action/upload-sarif](https://github.com/github/codeql-action).
Updates `github/codeql-action/init` from 4.36.0 to 4.37.0
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/github/codeql-action/releases">github/codeql-action/init's
releases</a>.</em></p>
<blockquote>
<h2>v4.37.0</h2>
<ul>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.26.0">2.26.0</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3995">#3995</a></li>
<li>In addition to the existing input format, the
<code>config-file</code> input for the <code>codeql-action/init</code>
step will soon support a new <code>[owner/]repo[@ref][:path]</code>
format. All components except the repository name are optional. If
omitted, <code>owner</code> defaults to the same owner as the repository
the analysis is running for, <code>ref</code> to <code>main</code>, and
<code>path</code> to <code>.github/codeql-action.yaml</code>. Support
for this format ships in this version of the CodeQL Action, but will
only be enabled over the coming weeks. <a
href="https://redirect.github.com/github/codeql-action/pull/3973">#3973</a></li>
</ul>
<h2>v4.36.3</h2>
<p>No user facing changes.</p>
<h2>v4.36.2</h2>
<ul>
<li>Cache CodeQL CLI version information across Actions steps. <a
href="https://redirect.github.com/github/codeql-action/pull/3943">#3943</a></li>
<li>Reduce requests while waiting for analysis processing by using
exponential backoff when polling SARIF processing status. <a
href="https://redirect.github.com/github/codeql-action/pull/3937">#3937</a></li>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.25.6">2.25.6</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3948">#3948</a></li>
</ul>
<h2>v4.36.1</h2>
<p>No user facing changes.</p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/github/codeql-action/blob/main/CHANGELOG.md">github/codeql-action/init's
changelog</a>.</em></p>
<blockquote>
<h1>CodeQL Action Changelog</h1>
<p>See the <a
href="https://github.com/github/codeql-action/releases">releases
page</a> for the relevant changes to the CodeQL CLI and language
packs.</p>
<h2>[UNRELEASED]</h2>
<p>No user facing changes.</p>
<h2>4.37.0 - 08 Jul 2026</h2>
<ul>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.26.0">2.26.0</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3995">#3995</a></li>
<li>In addition to the existing input format, the
<code>config-file</code> input for the <code>codeql-action/init</code>
step will soon support a new <code>[owner/]repo[@ref][:path]</code>
format. All components except the repository name are optional. If
omitted, <code>owner</code> defaults to the same owner as the repository
the analysis is running for, <code>ref</code> to <code>main</code>, and
<code>path</code> to <code>.github/codeql-action.yaml</code>. Support
for this format ships in this version of the CodeQL Action, but will
only be enabled over the coming weeks. <a
href="https://redirect.github.com/github/codeql-action/pull/3973">#3973</a></li>
</ul>
<h2>4.36.3 - 01 Jul 2026</h2>
<p>No user facing changes.</p>
<h2>4.36.2 - 04 Jun 2026</h2>
<ul>
<li>Cache CodeQL CLI version information across Actions steps. <a
href="https://redirect.github.com/github/codeql-action/pull/3943">#3943</a></li>
<li>Reduce requests while waiting for analysis processing by using
exponential backoff when polling SARIF processing status. <a
href="https://redirect.github.com/github/codeql-action/pull/3937">#3937</a></li>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.25.6">2.25.6</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3948">#3948</a></li>
</ul>
<h2>4.36.1 - 02 Jun 2026</h2>
<p>No user facing changes.</p>
<h2>4.36.0 - 22 May 2026</h2>
<ul>
<li><em>Breaking change</em>: Bump the minimum required CodeQL bundle
version to 2.19.4. <a
href="https://redirect.github.com/github/codeql-action/pull/3894">#3894</a></li>
<li>Add support for SHA-256 Git object IDs. <a
href="https://redirect.github.com/github/codeql-action/pull/3893">#3893</a></li>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.25.5">2.25.5</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3926">#3926</a></li>
</ul>
<h2>4.35.5 - 15 May 2026</h2>
<ul>
<li>We have improved how the JavaScript bundles for the CodeQL Action
are generated to avoid duplication across bundles and reduce the size of
the repository by around 70%. This should have no effect on the runtime
behaviour of the CodeQL Action. <a
href="https://redirect.github.com/github/codeql-action/pull/3899">#3899</a></li>
<li>For performance and accuracy reasons, <a
href="https://redirect.github.com/github/roadmap/issues/1158">improved
incremental analysis</a> will now only be enabled on a pull request when
diff-informed analysis is also enabled for that run. If diff-informed
analysis is unavailable (for example, because the PR diff ranges could
not be computed), the action will fall back to a full analysis. <a
href="https://redirect.github.com/github/codeql-action/pull/3791">#3791</a></li>
<li>If multiple inputs are provided for the GitHub-internal
<code>analysis-kinds</code> input, only <code>code-scanning</code> will
be enabled. The <code>analysis-kinds</code> input is experimental, for
GitHub-internal use only, and may change without notice at any time. <a
href="https://redirect.github.com/github/codeql-action/pull/3892">#3892</a></li>
<li>Added an experimental change which, when running a Code Scanning
analysis for a PR with <a
href="https://redirect.github.com/github/roadmap/issues/1158">improved
incremental analysis</a> enabled, prefers CodeQL CLI versions that have
a cached overlay-base database for the configured languages. This speeds
up analysis for a repository when there is not yet a cached overlay-base
database for the latest CLI version. We expect to roll this change out
to everyone in May. <a
href="https://redirect.github.com/github/codeql-action/pull/3880">#3880</a></li>
</ul>
<h2>4.35.4 - 07 May 2026</h2>
<ul>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.25.4">2.25.4</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3881">#3881</a></li>
</ul>
<h2>4.35.3 - 01 May 2026</h2>
<ul>
<li><em>Upcoming breaking change</em>: Add a deprecation warning for
customers using CodeQL version 2.19.3 and earlier. These versions of
CodeQL were discontinued on 9 April 2026 alongside GitHub Enterprise
Server 3.15, and will be unsupported by the next minor release of the
CodeQL Action. <a
href="https://redirect.github.com/github/codeql-action/pull/3837">#3837</a></li>
<li>Configurations for private registries that use Cloudsmith or GCP
OIDC are now accepted. <a
href="https://redirect.github.com/github/codeql-action/pull/3850">#3850</a></li>
<li>Best-effort connection tests for private registries now use
<code>GET</code> requests instead of <code>HEAD</code> for better
compatibility with various registry implementations. For NuGet feeds,
the test is now always performed against the service index. <a
href="https://redirect.github.com/github/codeql-action/pull/3853">#3853</a></li>
<li>Fixed a bug where two diagnostics produced within the same
millisecond could overwrite each other on disk, causing one of them to
be lost. <a
href="https://redirect.github.com/github/codeql-action/pull/3852">#3852</a></li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="99df26d4f1"><code>99df26d</code></a>
Merge pull request <a
href="https://redirect.github.com/github/codeql-action/issues/3996">#3996</a>
from github/update-v4.37.0-c7c896d71</li>
<li><a
href="31c27074fd"><code>31c2707</code></a>
Add changenote for <a
href="https://redirect.github.com/github/codeql-action/issues/3973">#3973</a></li>
<li><a
href="72df2181aa"><code>72df218</code></a>
Update changelog for v4.37.0</li>
<li><a
href="c7c896d71b"><code>c7c896d</code></a>
Merge pull request <a
href="https://redirect.github.com/github/codeql-action/issues/3995">#3995</a>
from github/update-bundle/codeql-bundle-v2.26.0</li>
<li><a
href="3f34ff0ea3"><code>3f34ff0</code></a>
Add changelog note</li>
<li><a
href="43bec09f1d"><code>43bec09</code></a>
Update default bundle to codeql-bundle-v2.26.0</li>
<li><a
href="f58f0d11eb"><code>f58f0d1</code></a>
Merge pull request <a
href="https://redirect.github.com/github/codeql-action/issues/3973">#3973</a>
from github/mbg/repo-props/config-file-shorthands</li>
<li><a
href="7dc37cbb5b"><code>7dc37cb</code></a>
Merge remote-tracking branch 'origin/main' into
mbg/repo-props/config-file-sh...</li>
<li><a
href="8e22350a7e"><code>8e22350</code></a>
Thread <code>ActionState</code> to <code>initConfig</code></li>
<li><a
href="69c9e8c7d9"><code>69c9e8c</code></a>
Mark some <code>status-report</code> imports as <code>type</code>-only
to avoid circular dependencies</li>
<li>Additional commits viewable in <a
href="7211b7c807...99df26d4f1">compare
view</a></li>
</ul>
</details>
<br />
Updates `github/codeql-action/analyze` from 4.36.0 to 4.37.0
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/github/codeql-action/releases">github/codeql-action/analyze's
releases</a>.</em></p>
<blockquote>
<h2>v4.37.0</h2>
<ul>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.26.0">2.26.0</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3995">#3995</a></li>
<li>In addition to the existing input format, the
<code>config-file</code> input for the <code>codeql-action/init</code>
step will soon support a new <code>[owner/]repo[@ref][:path]</code>
format. All components except the repository name are optional. If
omitted, <code>owner</code> defaults to the same owner as the repository
the analysis is running for, <code>ref</code> to <code>main</code>, and
<code>path</code> to <code>.github/codeql-action.yaml</code>. Support
for this format ships in this version of the CodeQL Action, but will
only be enabled over the coming weeks. <a
href="https://redirect.github.com/github/codeql-action/pull/3973">#3973</a></li>
</ul>
<h2>v4.36.3</h2>
<p>No user facing changes.</p>
<h2>v4.36.2</h2>
<ul>
<li>Cache CodeQL CLI version information across Actions steps. <a
href="https://redirect.github.com/github/codeql-action/pull/3943">#3943</a></li>
<li>Reduce requests while waiting for analysis processing by using
exponential backoff when polling SARIF processing status. <a
href="https://redirect.github.com/github/codeql-action/pull/3937">#3937</a></li>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.25.6">2.25.6</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3948">#3948</a></li>
</ul>
<h2>v4.36.1</h2>
<p>No user facing changes.</p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/github/codeql-action/blob/main/CHANGELOG.md">github/codeql-action/analyze's
changelog</a>.</em></p>
<blockquote>
<h1>CodeQL Action Changelog</h1>
<p>See the <a
href="https://github.com/github/codeql-action/releases">releases
page</a> for the relevant changes to the CodeQL CLI and language
packs.</p>
<h2>[UNRELEASED]</h2>
<p>No user facing changes.</p>
<h2>4.37.0 - 08 Jul 2026</h2>
<ul>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.26.0">2.26.0</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3995">#3995</a></li>
<li>In addition to the existing input format, the
<code>config-file</code> input for the <code>codeql-action/init</code>
step will soon support a new <code>[owner/]repo[@ref][:path]</code>
format. All components except the repository name are optional. If
omitted, <code>owner</code> defaults to the same owner as the repository
the analysis is running for, <code>ref</code> to <code>main</code>, and
<code>path</code> to <code>.github/codeql-action.yaml</code>. Support
for this format ships in this version of the CodeQL Action, but will
only be enabled over the coming weeks. <a
href="https://redirect.github.com/github/codeql-action/pull/3973">#3973</a></li>
</ul>
<h2>4.36.3 - 01 Jul 2026</h2>
<p>No user facing changes.</p>
<h2>4.36.2 - 04 Jun 2026</h2>
<ul>
<li>Cache CodeQL CLI version information across Actions steps. <a
href="https://redirect.github.com/github/codeql-action/pull/3943">#3943</a></li>
<li>Reduce requests while waiting for analysis processing by using
exponential backoff when polling SARIF processing status. <a
href="https://redirect.github.com/github/codeql-action/pull/3937">#3937</a></li>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.25.6">2.25.6</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3948">#3948</a></li>
</ul>
<h2>4.36.1 - 02 Jun 2026</h2>
<p>No user facing changes.</p>
<h2>4.36.0 - 22 May 2026</h2>
<ul>
<li><em>Breaking change</em>: Bump the minimum required CodeQL bundle
version to 2.19.4. <a
href="https://redirect.github.com/github/codeql-action/pull/3894">#3894</a></li>
<li>Add support for SHA-256 Git object IDs. <a
href="https://redirect.github.com/github/codeql-action/pull/3893">#3893</a></li>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.25.5">2.25.5</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3926">#3926</a></li>
</ul>
<h2>4.35.5 - 15 May 2026</h2>
<ul>
<li>We have improved how the JavaScript bundles for the CodeQL Action
are generated to avoid duplication across bundles and reduce the size of
the repository by around 70%. This should have no effect on the runtime
behaviour of the CodeQL Action. <a
href="https://redirect.github.com/github/codeql-action/pull/3899">#3899</a></li>
<li>For performance and accuracy reasons, <a
href="https://redirect.github.com/github/roadmap/issues/1158">improved
incremental analysis</a> will now only be enabled on a pull request when
diff-informed analysis is also enabled for that run. If diff-informed
analysis is unavailable (for example, because the PR diff ranges could
not be computed), the action will fall back to a full analysis. <a
href="https://redirect.github.com/github/codeql-action/pull/3791">#3791</a></li>
<li>If multiple inputs are provided for the GitHub-internal
<code>analysis-kinds</code> input, only <code>code-scanning</code> will
be enabled. The <code>analysis-kinds</code> input is experimental, for
GitHub-internal use only, and may change without notice at any time. <a
href="https://redirect.github.com/github/codeql-action/pull/3892">#3892</a></li>
<li>Added an experimental change which, when running a Code Scanning
analysis for a PR with <a
href="https://redirect.github.com/github/roadmap/issues/1158">improved
incremental analysis</a> enabled, prefers CodeQL CLI versions that have
a cached overlay-base database for the configured languages. This speeds
up analysis for a repository when there is not yet a cached overlay-base
database for the latest CLI version. We expect to roll this change out
to everyone in May. <a
href="https://redirect.github.com/github/codeql-action/pull/3880">#3880</a></li>
</ul>
<h2>4.35.4 - 07 May 2026</h2>
<ul>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.25.4">2.25.4</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3881">#3881</a></li>
</ul>
<h2>4.35.3 - 01 May 2026</h2>
<ul>
<li><em>Upcoming breaking change</em>: Add a deprecation warning for
customers using CodeQL version 2.19.3 and earlier. These versions of
CodeQL were discontinued on 9 April 2026 alongside GitHub Enterprise
Server 3.15, and will be unsupported by the next minor release of the
CodeQL Action. <a
href="https://redirect.github.com/github/codeql-action/pull/3837">#3837</a></li>
<li>Configurations for private registries that use Cloudsmith or GCP
OIDC are now accepted. <a
href="https://redirect.github.com/github/codeql-action/pull/3850">#3850</a></li>
<li>Best-effort connection tests for private registries now use
<code>GET</code> requests instead of <code>HEAD</code> for better
compatibility with various registry implementations. For NuGet feeds,
the test is now always performed against the service index. <a
href="https://redirect.github.com/github/codeql-action/pull/3853">#3853</a></li>
<li>Fixed a bug where two diagnostics produced within the same
millisecond could overwrite each other on disk, causing one of them to
be lost. <a
href="https://redirect.github.com/github/codeql-action/pull/3852">#3852</a></li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="99df26d4f1"><code>99df26d</code></a>
Merge pull request <a
href="https://redirect.github.com/github/codeql-action/issues/3996">#3996</a>
from github/update-v4.37.0-c7c896d71</li>
<li><a
href="31c27074fd"><code>31c2707</code></a>
Add changenote for <a
href="https://redirect.github.com/github/codeql-action/issues/3973">#3973</a></li>
<li><a
href="72df2181aa"><code>72df218</code></a>
Update changelog for v4.37.0</li>
<li><a
href="c7c896d71b"><code>c7c896d</code></a>
Merge pull request <a
href="https://redirect.github.com/github/codeql-action/issues/3995">#3995</a>
from github/update-bundle/codeql-bundle-v2.26.0</li>
<li><a
href="3f34ff0ea3"><code>3f34ff0</code></a>
Add changelog note</li>
<li><a
href="43bec09f1d"><code>43bec09</code></a>
Update default bundle to codeql-bundle-v2.26.0</li>
<li><a
href="f58f0d11eb"><code>f58f0d1</code></a>
Merge pull request <a
href="https://redirect.github.com/github/codeql-action/issues/3973">#3973</a>
from github/mbg/repo-props/config-file-shorthands</li>
<li><a
href="7dc37cbb5b"><code>7dc37cb</code></a>
Merge remote-tracking branch 'origin/main' into
mbg/repo-props/config-file-sh...</li>
<li><a
href="8e22350a7e"><code>8e22350</code></a>
Thread <code>ActionState</code> to <code>initConfig</code></li>
<li><a
href="69c9e8c7d9"><code>69c9e8c</code></a>
Mark some <code>status-report</code> imports as <code>type</code>-only
to avoid circular dependencies</li>
<li>Additional commits viewable in <a
href="7211b7c807...99df26d4f1">compare
view</a></li>
</ul>
</details>
<br />
Updates `github/codeql-action/upload-sarif` from 4.36.2 to 4.37.0
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/github/codeql-action/releases">github/codeql-action/upload-sarif's
releases</a>.</em></p>
<blockquote>
<h2>v4.37.0</h2>
<ul>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.26.0">2.26.0</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3995">#3995</a></li>
<li>In addition to the existing input format, the
<code>config-file</code> input for the <code>codeql-action/init</code>
step will soon support a new <code>[owner/]repo[@ref][:path]</code>
format. All components except the repository name are optional. If
omitted, <code>owner</code> defaults to the same owner as the repository
the analysis is running for, <code>ref</code> to <code>main</code>, and
<code>path</code> to <code>.github/codeql-action.yaml</code>. Support
for this format ships in this version of the CodeQL Action, but will
only be enabled over the coming weeks. <a
href="https://redirect.github.com/github/codeql-action/pull/3973">#3973</a></li>
</ul>
<h2>v4.36.3</h2>
<p>No user facing changes.</p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/github/codeql-action/blob/main/CHANGELOG.md">github/codeql-action/upload-sarif's
changelog</a>.</em></p>
<blockquote>
<h1>CodeQL Action Changelog</h1>
<p>See the <a
href="https://github.com/github/codeql-action/releases">releases
page</a> for the relevant changes to the CodeQL CLI and language
packs.</p>
<h2>[UNRELEASED]</h2>
<p>No user facing changes.</p>
<h2>4.37.0 - 08 Jul 2026</h2>
<ul>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.26.0">2.26.0</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3995">#3995</a></li>
<li>In addition to the existing input format, the
<code>config-file</code> input for the <code>codeql-action/init</code>
step will soon support a new <code>[owner/]repo[@ref][:path]</code>
format. All components except the repository name are optional. If
omitted, <code>owner</code> defaults to the same owner as the repository
the analysis is running for, <code>ref</code> to <code>main</code>, and
<code>path</code> to <code>.github/codeql-action.yaml</code>. Support
for this format ships in this version of the CodeQL Action, but will
only be enabled over the coming weeks. <a
href="https://redirect.github.com/github/codeql-action/pull/3973">#3973</a></li>
</ul>
<h2>4.36.3 - 01 Jul 2026</h2>
<p>No user facing changes.</p>
<h2>4.36.2 - 04 Jun 2026</h2>
<ul>
<li>Cache CodeQL CLI version information across Actions steps. <a
href="https://redirect.github.com/github/codeql-action/pull/3943">#3943</a></li>
<li>Reduce requests while waiting for analysis processing by using
exponential backoff when polling SARIF processing status. <a
href="https://redirect.github.com/github/codeql-action/pull/3937">#3937</a></li>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.25.6">2.25.6</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3948">#3948</a></li>
</ul>
<h2>4.36.1 - 02 Jun 2026</h2>
<p>No user facing changes.</p>
<h2>4.36.0 - 22 May 2026</h2>
<ul>
<li><em>Breaking change</em>: Bump the minimum required CodeQL bundle
version to 2.19.4. <a
href="https://redirect.github.com/github/codeql-action/pull/3894">#3894</a></li>
<li>Add support for SHA-256 Git object IDs. <a
href="https://redirect.github.com/github/codeql-action/pull/3893">#3893</a></li>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.25.5">2.25.5</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3926">#3926</a></li>
</ul>
<h2>4.35.5 - 15 May 2026</h2>
<ul>
<li>We have improved how the JavaScript bundles for the CodeQL Action
are generated to avoid duplication across bundles and reduce the size of
the repository by around 70%. This should have no effect on the runtime
behaviour of the CodeQL Action. <a
href="https://redirect.github.com/github/codeql-action/pull/3899">#3899</a></li>
<li>For performance and accuracy reasons, <a
href="https://redirect.github.com/github/roadmap/issues/1158">improved
incremental analysis</a> will now only be enabled on a pull request when
diff-informed analysis is also enabled for that run. If diff-informed
analysis is unavailable (for example, because the PR diff ranges could
not be computed), the action will fall back to a full analysis. <a
href="https://redirect.github.com/github/codeql-action/pull/3791">#3791</a></li>
<li>If multiple inputs are provided for the GitHub-internal
<code>analysis-kinds</code> input, only <code>code-scanning</code> will
be enabled. The <code>analysis-kinds</code> input is experimental, for
GitHub-internal use only, and may change without notice at any time. <a
href="https://redirect.github.com/github/codeql-action/pull/3892">#3892</a></li>
<li>Added an experimental change which, when running a Code Scanning
analysis for a PR with <a
href="https://redirect.github.com/github/roadmap/issues/1158">improved
incremental analysis</a> enabled, prefers CodeQL CLI versions that have
a cached overlay-base database for the configured languages. This speeds
up analysis for a repository when there is not yet a cached overlay-base
database for the latest CLI version. We expect to roll this change out
to everyone in May. <a
href="https://redirect.github.com/github/codeql-action/pull/3880">#3880</a></li>
</ul>
<h2>4.35.4 - 07 May 2026</h2>
<ul>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.25.4">2.25.4</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3881">#3881</a></li>
</ul>
<h2>4.35.3 - 01 May 2026</h2>
<ul>
<li><em>Upcoming breaking change</em>: Add a deprecation warning for
customers using CodeQL version 2.19.3 and earlier. These versions of
CodeQL were discontinued on 9 April 2026 alongside GitHub Enterprise
Server 3.15, and will be unsupported by the next minor release of the
CodeQL Action. <a
href="https://redirect.github.com/github/codeql-action/pull/3837">#3837</a></li>
<li>Configurations for private registries that use Cloudsmith or GCP
OIDC are now accepted. <a
href="https://redirect.github.com/github/codeql-action/pull/3850">#3850</a></li>
<li>Best-effort connection tests for private registries now use
<code>GET</code> requests instead of <code>HEAD</code> for better
compatibility with various registry implementations. For NuGet feeds,
the test is now always performed against the service index. <a
href="https://redirect.github.com/github/codeql-action/pull/3853">#3853</a></li>
<li>Fixed a bug where two diagnostics produced within the same
millisecond could overwrite each other on disk, causing one of them to
be lost. <a
href="https://redirect.github.com/github/codeql-action/pull/3852">#3852</a></li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="99df26d4f1"><code>99df26d</code></a>
Merge pull request <a
href="https://redirect.github.com/github/codeql-action/issues/3996">#3996</a>
from github/update-v4.37.0-c7c896d71</li>
<li><a
href="31c27074fd"><code>31c2707</code></a>
Add changenote for <a
href="https://redirect.github.com/github/codeql-action/issues/3973">#3973</a></li>
<li><a
href="72df2181aa"><code>72df218</code></a>
Update changelog for v4.37.0</li>
<li><a
href="c7c896d71b"><code>c7c896d</code></a>
Merge pull request <a
href="https://redirect.github.com/github/codeql-action/issues/3995">#3995</a>
from github/update-bundle/codeql-bundle-v2.26.0</li>
<li><a
href="3f34ff0ea3"><code>3f34ff0</code></a>
Add changelog note</li>
<li><a
href="43bec09f1d"><code>43bec09</code></a>
Update default bundle to codeql-bundle-v2.26.0</li>
<li><a
href="f58f0d11eb"><code>f58f0d1</code></a>
Merge pull request <a
href="https://redirect.github.com/github/codeql-action/issues/3973">#3973</a>
from github/mbg/repo-props/config-file-shorthands</li>
<li><a
href="7dc37cbb5b"><code>7dc37cb</code></a>
Merge remote-tracking branch 'origin/main' into
mbg/repo-props/config-file-sh...</li>
<li><a
href="8e22350a7e"><code>8e22350</code></a>
Thread <code>ActionState</code> to <code>initConfig</code></li>
<li><a
href="69c9e8c7d9"><code>69c9e8c</code></a>
Mark some <code>status-report</code> imports as <code>type</code>-only
to avoid circular dependencies</li>
<li>Additional commits viewable in <a
href="8aad20d150...99df26d4f1">compare
view</a></li>
</ul>
</details>
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</details>
Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Guglielmo Colombo <guglielmoc@google.com>
This PR removes the TTL enforcing on the cached tools, when used to
generate the http-parameters for CallTool, according to updated
[spec](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2972)
> Clients **MUST** construct `Mcp-Param-*` headers using the most
recently obtained `inputSchema` for the tool.
## Description
This PR introduces support for custom (non-standard) JSON-RPC methods in
the MCP Go SDK.
This feature enables servers to handle arbitrary JSON-RPC methods and
clients to invoke them, all while maintaining full type safety and
integrating seamlessly with the SDK's existing middleware and session
management.
- Server-Side Registration: Added AddReceivingCustomMethod to allow
servers to register handlers for custom methods. Incoming requests are
automatically unmarshaled into user-defined parameter structs.
- Client-Side Calling: Added AddSendingCustomMethod which returns a
strongly-typed caller function that clients can use to invoke custom
methods and receive strongly-typed results.
- Helper Structs: Provided ParamsBase and ResultBase for users to embed
in their custom structs. This allows them to easily satisfy the SDK's
internal Params and Result interfaces.
Fixes#954
This PR adds the protocol version `2026-07-28` to the list of supported
protocol versions and fixes legacy tests hardcoding the legacy protocol
version for those use cases.
This PR updates the error codes to align with the updated specifications
in
https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2907
ErrServerClosing and ErrClientClosing are reverted to their 1.6.0
version codes, as they do not overlap anymore with the newly introduced
error codes.
To guarantee a better compatibility with legacy server, enable the
fallback to the legacy initialize rpc in case of any error returned by
the server, in case of `server/discover` request.
## Problem
`AuthorizationCodeHandler.exchangeAuthorizationCode` builds the
long-lived token source from the **request context** passed to
`Authorize()`:
```go
clientCtx := context.WithValue(ctx, oauth2.HTTPClient, h.config.Client)
...
h.tokenSource = cfg.TokenSource(clientCtx, token)
```
`golang.org/x/oauth2` captures that context and reuses it for **every**
future refresh:
- `oauth2.go`: `Config.TokenSource(ctx, …)` stores `ctx` in
`tokenRefresher{ctx}`
- `tokenRefresher.Token()` (no ctx arg) calls `retrieveToken(tf.ctx, …)`
- `internal/token.go`: `ContextClient(ctx).Do(req.WithContext(ctx))`
`Authorize()` is normally invoked from a request- or connect-scoped
context — e.g. the streamable client transport calls it during
`setMCPHeaders`/`initialize`, and that context is cancelled once the
operation completes. The cached access token works until expiry; the
**first refresh after expiry** then fails instantly with `context
canceled`, before any HTTP request is sent. The connection can no longer
refresh.
`setMCPHeaders` only re-invokes `Authorize()` for an `invalid_grant`
`oauth2.RetrieveError` (#917). A `context canceled` is not a
`RetrieveError`, so it is never recovered — the connection is wedged
until the client reconnects.
### Reproduce
1. Connect a `StreamableClientTransport` with an
`AuthorizationCodeHandler` to a server whose `initialize` returns 401
(so `Authorize()` runs during connect, under the connect context).
2. Let the connect context be cancelled after connect returns (the
common pattern: a `context.WithTimeout(parent, …)` + `defer cancel()`
bounding the interactive flow).
3. Wait for the access token to expire and issue a request.
4. Every request fails with `Post "<token endpoint>": context canceled`
and `dur≈0` — the refresh never hits the network.
## Fix
A token source outlives the request that created it, so bind its
refreshes to `context.Background()` (still carrying the configured HTTP
client via `oauth2.HTTPClient`). The one-shot token exchange keeps using
the request context.
```go
refreshCtx := context.WithValue(context.Background(), oauth2.HTTPClient, h.config.Client)
h.tokenSource = cfg.TokenSource(refreshCtx, token)
```
`auth` package tests pass. Behaviour is otherwise unchanged: the same
HTTP client value is carried; only the cancellation parent differs.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
---------
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Co-authored-by: Guglielmo Colombo <guglielmoc@google.com>
## Summary
- Add an exported \`oauthex.MatchesResource(claims []string, resource
string) bool\` helper that compares an \`aud\` claim slice against an
expected resource URL with the canonical-form (trailing slash) tolerance
required by RFC 9728 and RFC 8707.
- Tests cover the common shape combinations (canonical/trimmed in either
direction, surrounding whitespace, multiple claims) plus negative cases
ensuring scheme + path mismatches still fail.
## Motivation
RFC 9728 §3.3 canonicalises the protected-resource identifier with a
trailing slash, but RFC 8707 resource indicators frequently omit it.
Upstream IdPs vary in which form they emit in the \`aud\` claim (Google
trims, Auth0 retains, some clients round-trip whatever the IdP sent).
Strict byte equality therefore fails routinely on legitimate setups.
Resource servers writing this comparison by hand all converge on the
same trim-trailing-slash + whitespace logic; exporting a canonical
helper saves every consumer from re-deriving it.
## Test plan
- [x] \`go test ./oauthex/... -run MatchesResource\` passes.
- [x] Positive cases: exact match, trailing slash on either side,
surrounding whitespace, multi-claim slice with one match.
- [x] Negative cases: empty slice, no match, path mismatch, scheme
mismatch (HTTPS vs HTTP must still fail).
---------
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Co-authored-by: Guglielmo Colombo <guglielmoc@google.com>
Yaroslav
George McCarron
Jan Steinke
Guglielmo Colombo
Scott Leggett
Yashas Gunderia
dependabot[bot]
Thomas Bechtold
BorisTyshkevich