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Author SHA1 Message Date
Guglielmo Colombo
2643b22a4e
 		feat: add automatic application_type inference (#904) 
Implement requirements introduced by
[SEP-337](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/837)

Fixes #903

---------

Co-authored-by: Maciej Kisiel <mkisiel@google.com>
 2026-04-27 13:02:01 +02:00
Ravish Gupta
db50910c70
 		mcp: do not re-prompt OAuth after cancelled Authorize (#885) 
When `OAuthHandler.Authorize` returns a context-cancelled error, the
cancellation notification that the call layer sends in response to the
same ctx cancellation is routed back through the streamable client
transport, re-triggering the `401` → `Authorize` path and prompting the
user a second time for a request they have already abandoned.

Fix in two layers:

1. **`mcp/transport.go`** — bound the cancellation `Notify` with a fresh
`context.Background()`-derived timeout instead of reusing the cancelled
caller context. This guarantees the caller never blocks on a doomed
notify against a degraded connection.
2. **`mcp/streamable.go`** — when `Authorize` returns a
context-cancelled error, mark the streamable client connection as failed
via `c.fail()`. The existing failure check in `Write()` then
short-circuits the cancellation notification without re-invoking the
OAuth handler, matching the bug reporter's expectation that cancelling
`Authorize` abandons the connection.

Includes a regression test
(`TestStreamableClientOAuth_CancelledAuthorize_NoReprompt`) with a
blocking `OAuthHandler` that asserts `Authorize` is invoked exactly
once. The test was verified to fail on unfixed code (`got 2` calls) and
pass with the fix.

Fixes #882

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
 2026-04-24 16:58:57 +02:00
John Pugliesi
5f2cd8fd14
 		mcp: preserve transport errors in Write error chain (#888) 
mcp: preserve transport errors in Write error chain

Custom RoundTrippers that return typed errors (e.g. for auth failures)
have those errors flattened to strings by `%v`, making `errors.As`
unusable for callers inspecting transport-level errors.

This is inconsistent with the OAuth handler path (line 1807) which
already uses `%w` to preserve errors for client inspection.

Relates to #579

Co-authored-by: Maciej Kisiel <mkisiel@google.com>
 2026-04-24 13:20:45 +02:00
Nick Masi
0edc5971cd
 		Update README.md (#896) 
correct the default address of the locally hosted server, according to
`main.go:21` the default is `:8000` not `:8080`

Co-authored-by: Maciej Kisiel <mkisiel@google.com>
 2026-04-24 11:47:17 +02:00
Maciej Kisiel
41e1f941bb
 		mcp: remove default cross origin protection (#906) 
Fixes #902
 2026-04-24 11:35:22 +02:00
Kalvin C
35f1b07e48
 		mcp: accept parameterized Content-Type types (#890) 
Use a shared helper for Content-Type parsing in streamable transport
request validation and client response handling.

Follow up to https://github.com/modelcontextprotocol/go-sdk/pull/853,
where we did this for `Accept` headers.

This allows the streamable mcp server to validate the following header
`Content-Type: application/json;charset=utf-8`

Co-authored-by: Maciej Kisiel <mkisiel@google.com>
 2026-04-23 08:51:47 -04:00
Maciej Kisiel
b37e497f0a
 		mcp: don't close session when keepalive ping returns method-not-found (#900) 
Since ping is optional per the MCP spec, a peer that doesn't implement
it will respond with a -32601 (method not found) error. Previously,
startKeepalive treated all ping errors identically, closing the session
even when the peer was perfectly healthy.

Now, a method-not-found response stops the keepalive goroutine without
closing the session.

Fixes #897
 2026-04-22 16:35:27 +02:00
Ravish Gupta
4c00594be6
 		mcp: log out-of-band errors instead of dropping them (#887) 
## Summary

Two error sites in the MCP runtime were previously unobservable:

- **`mcp/shared.go` `startKeepalive`** — when a keepalive ping failed,
the session was closed silently with no indication of why.
- **`mcp/transport.go` `connect`** — `jsonrpc2.OnInternalError` printed
via the package-level `log.Printf`, bypassing the `*slog.Logger`
configured on `ServerOptions`/`ClientOptions`.

Both sites now report through the existing `*slog.Logger` that `Server`
and `Client` already guarantee non-nil via `ensureLogger`. The logger is
threaded into the unexported `startKeepalive` and `connect` helpers as a
parameter — **no new public API surface**.

## Context

Per @jba's [suggestion on
#865](https://github.com/modelcontextprotocol/go-sdk/pull/865#issuecomment-4156166474):

> Maybe we can just use the logger in all the places we currently drop
the error. Then it's still reported, but we don't have to add any API.

This PR is that smaller alternative. It addresses the concrete
observability gap in #218 without expanding `ServerOptions`. PR #865
(the `ErrorHandler` callback proposal) remains open pending community
input on whether a structured callback API is also wanted on top of
logging.

`notifySessions` already logs at `Warn` level on delivery errors and is
intentionally left untouched.

## Test plan

- [x] New regression test `TestKeepAliveFailure_Logged` asserts the
keepalive failure produces a log line on the configured logger.
- [x] Verified the test fails when the new `logger.Error(...)` call is
removed (sanity check that it pins the behavior).
- [x] `go test ./mcp/... -count=1` passes.
- [x] `go vet ./...` clean.
- [x] `go build ./...` clean.

Refs #218

---------

Co-authored-by: Maciej Kisiel <mkisiel@google.com>
 2026-04-14 16:53:11 +02:00
Maciej Kisiel
15e93a231c
 		mcp: add DNS rebinding and cross origin protections to SSE transport (#891) 
Similar protections were already introduced before to the Streamable
transport.
 2026-04-14 11:36:20 +02:00
Dinesh
1209861858
 		Add documentation backed by mkdocs (#883) 
Affects /docs - (Refined Documentation for deployment and added Some
Supporting documentation)
Added a github action for deployment

Fixes #835  

Added Support for mkdocs
Example -  https://dinesht04.github.io/go-sdk/

Requires Configuration of Github pages as follows:-

1. Enable Github Pages
2. Select gh-pages branch for deployment

<img width="1237" height="817" alt="gh-pages"
src="https://github.com/user-attachments/assets/01f0b012-d5f3-4011-9af9-7269e657ae6a"
/>

## Sources
# For mkdocs.yaml
1.
https://github.com/modelcontextprotocol/python-sdk/blob/main/mkdocs.yml
2. https://github.com/modelcontextprotocol/java-sdk/blob/main/mkdocs.yml
  3. MKDocs official documentation
# For Github Action
1.
https://github.com/modelcontextprotocol/python-sdk/blob/main/.github/workflows/publish-docs-manually.yml
2.
https://github.com/modelcontextprotocol/java-sdk/blob/main/.github/workflows/docs.yml
3.
https://github.com/james-willett/material-mkdocs-youtube-2024/blob/main/.github/workflows/ci.yml
- From Youtube Tutorial
 2026-04-09 14:25:43 +02:00
Maciej Kisiel
f36591bf8a
 		extauth: refactor enterprise auth tests (#879) 2026-04-08 13:42:59 +02:00
Maciej Kisiel
f71c803175
 		chore: preserve CNAME when deploying to GitHub pages (#884) 2026-04-08 07:47:40 +02:00
Benjamin Egelund-Müller
862d78a265
 		mcp: fix race condition in ServerSession.startKeepalive (#856) 
This PR fixes a race condition where `ServerSession.keepaliveCancel` was
accessed in `Close` concurrently with its initialization in
`ServerSession.startKeepalive`. It also removes a now redundant test.

The fix moves keepalive initialization into `ServerSession.Connect`
similar to the implementation in `ClientSession.Connect`. This is safe
because the MCP spec allows keepalive pings before the initialization
messages. From the MCP
[spec](https://modelcontextprotocol.io/specification/2025-11-25/basic/lifecycle)
(emphasis added):
> The client SHOULD NOT send requests **other than pings** before the
server has responded to the initialize request.

The PR includes a reproducer test case, which fails with the following
error without this fix:
```
> go test -count=10 -race -run ^TestStreamableStatelessKeepaliveRace$ github.com/modelcontextprotocol/go-sdk/mcp                                                                                                                          8s
==================
WARNING: DATA RACE
Write at 0x00c00007fbf0 by goroutine 1095:
  github.com/modelcontextprotocol/go-sdk/mcp.startKeepalive()
      /Users/benjamin/Documents/go-sdk/mcp/shared.go:590 +0x58
  github.com/modelcontextprotocol/go-sdk/mcp.(*ServerSession).startKeepalive()
      /Users/benjamin/Documents/go-sdk/mcp/server.go:1526 +0x130
  github.com/modelcontextprotocol/go-sdk/mcp.(*ServerSession).initialized()
      /Users/benjamin/Documents/go-sdk/mcp/server.go:1059 +0xf8
  github.com/modelcontextprotocol/go-sdk/mcp.init.serverSessionMethod[go.shape.*uint8,go.shape.interface { GetMeta() map[string]interface {}; SetMeta(map[string]interface {}); github.com/modelcontextprotocol/go-sdk/mcp.isResult() }].func27()
      /Users/benjamin/Documents/go-sdk/mcp/shared.go:332 +0x98
  github.com/modelcontextprotocol/go-sdk/mcp.newServerMethodInfo[go.shape.*github.com/modelcontextprotocol/go-sdk/mcp.InitializedParams,go.shape.interface { GetMeta() map[string]interface {}; SetMeta(map[string]interface {}); github.com/modelcontextprotocol/go-sdk/mcp.isResult() },go.shape.struct { github.com/modelcontextprotocol/go-sdk/mcp.Meta "json:\"_meta,omitempty\"" }].func2()
      /Users/benjamin/Documents/go-sdk/mcp/shared.go:272 +0x84
  github.com/modelcontextprotocol/go-sdk/mcp.defaultReceivingMethodHandler[go.shape.*uint8]()
      /Users/benjamin/Documents/go-sdk/mcp/shared.go:152 +0xe8
  github.com/modelcontextprotocol/go-sdk/mcp.defaultReceivingMethodHandler[*github.com/modelcontextprotocol/go-sdk/mcp.ServerSession]()
      /Users/benjamin/Documents/go-sdk/mcp/shared.go:146 +0x60
  github.com/modelcontextprotocol/go-sdk/mcp.handleReceive[go.shape.*uint8]()
      /Users/benjamin/Documents/go-sdk/mcp/shared.go:169 +0x228
  github.com/modelcontextprotocol/go-sdk/mcp.(*ServerSession).handle()
      /Users/benjamin/Documents/go-sdk/mcp/server.go:1445 +0x370
  github.com/modelcontextprotocol/go-sdk/mcp.connect[go.shape.*uint8,go.shape.*uint8].func1.1()
      /Users/benjamin/Documents/go-sdk/mcp/transport.go:170 +0x5c
  github.com/modelcontextprotocol/go-sdk/internal/jsonrpc2.HandlerFunc.Handle()
      /Users/benjamin/Documents/go-sdk/internal/jsonrpc2/jsonrpc2.go:84 +0x48
  github.com/modelcontextprotocol/go-sdk/internal/jsonrpc2.(*Connection).handleAsync.func3()
      /Users/benjamin/Documents/go-sdk/internal/jsonrpc2/conn.go:717 +0xd8

Previous read at 0x00c00007fbf0 by goroutine 1089:
  github.com/modelcontextprotocol/go-sdk/mcp.(*ServerSession).Close()
      /Users/benjamin/Documents/go-sdk/mcp/server.go:1502 +0x34
  github.com/modelcontextprotocol/go-sdk/mcp.(*StreamableHTTPHandler).ServeHTTP.deferwrap1()
      /Users/benjamin/Documents/go-sdk/mcp/streamable.go:519 +0x34
  runtime.deferreturn()
      /opt/homebrew/Cellar/go/1.25.4/libexec/src/runtime/panic.go:589 +0x5c
  github.com/modelcontextprotocol/go-sdk/mcp.TestStreamableStatelessKeepaliveRace.mustNotPanic.func2()
      /Users/benjamin/Documents/go-sdk/mcp/streamable_test.go:2156 +0x94
  net/http.HandlerFunc.ServeHTTP()
      /opt/homebrew/Cellar/go/1.25.4/libexec/src/net/http/server.go:2322 +0x48
  net/http.serverHandler.ServeHTTP()
      /opt/homebrew/Cellar/go/1.25.4/libexec/src/net/http/server.go:3340 +0x270
  net/http.(*conn).serve()
      /opt/homebrew/Cellar/go/1.25.4/libexec/src/net/http/server.go:2109 +0x9b0
  net/http.(*Server).Serve.gowrap3()
      /opt/homebrew/Cellar/go/1.25.4/libexec/src/net/http/server.go:3493 +0x48

Goroutine 1095 (running) created at:
  github.com/modelcontextprotocol/go-sdk/internal/jsonrpc2.(*Connection).handleAsync()
      /Users/benjamin/Documents/go-sdk/internal/jsonrpc2/conn.go:715 +0x334
  github.com/modelcontextprotocol/go-sdk/internal/jsonrpc2.(*Connection).acceptRequest.func2.gowrap1()
      /Users/benjamin/Documents/go-sdk/internal/jsonrpc2/conn.go:676 +0x34

Goroutine 1089 (running) created at:
  net/http.(*Server).Serve()
      /opt/homebrew/Cellar/go/1.25.4/libexec/src/net/http/server.go:3493 +0x5dc
  net/http/httptest.(*Server).goServe.func1()
      /opt/homebrew/Cellar/go/1.25.4/libexec/src/net/http/httptest/server.go:311 +0x98
==================
--- FAIL: TestStreamableStatelessKeepaliveRace (0.14s)
    testing.go:1617: race detected during execution of test
FAIL
FAIL	github.com/modelcontextprotocol/go-sdk/mcp	1.727s
FAIL
```

---------

Co-authored-by: Maciej Kisiel <mkisiel@google.com>
 2026-04-03 20:17:49 +02:00
Ravish Gupta
34a19dff46
 		mcp: preserve existing Content in SetError (#864) 
SetError now only populates the Content field when it has not already
been populated. This allows callers to provide a user-friendly message
while still recording the underlying error for middleware inspection
via GetError.
The len check (rather than nil check) ensures both nil and empty-slice
Content are treated as "not yet populated."
  Fixes #858
 2026-04-03 20:15:24 +02:00
Rafael Dantas Justo
27f29c1cef
 		mcp: allow Content-Type parameters in streamable transport (#878) 
Use `mime.ParseMediaType` to parse the `Content-Type` header instead of
exact string matching. Previously, the server required an exact match on
`application/json`.

This allows the server to accept `application/json` with parameters
(e.g. `charset=utf-8`), even though [they are not
required](https://datatracker.ietf.org/doc/html/rfc4627.html#section-6),
following the robustness principle.

Per [RFC 8259 (section
8.1)](https://datatracker.ietf.org/doc/html/rfc8259.html#section-8.1),
`application/json` is always UTF-8, so such parameters are technically
redundant. However, parsing the media type makes the server more
tolerant of client behaviour, improving compatibility without
compromising security.
 2026-04-03 17:42:20 +02:00
MatyasVondraOutreach
76d5a54125
 		oauthex: accept 200 in client registration (#877) 
## Summary

Accepts HTTP 200 as a valid response in Dynamic Client Registration
(DCR), in addition to 201. Some authorization servers return 200 instead
of the RFC-specified 201 on successful registration.

Fixes https://github.com/modelcontextprotocol/go-sdk/issues/876

## Changes

- `oauthex/dcr.go`: accept 200 status code in client registration
response
- `oauthex/dcr_test.go`: add test coverage for the 200 response case
 2026-04-01 16:51:18 +02:00
dependabot[bot]
6537610f47
 		build(deps): bump dominikh/staticcheck-action from 1.4.0 to 1.4.1 (#872) 
Bumps
[dominikh/staticcheck-action](https://github.com/dominikh/staticcheck-action)
from 1.4.0 to 1.4.1.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/dominikh/staticcheck-action/releases">dominikh/staticcheck-action's
releases</a>.</em></p>
<blockquote>
<h2>v1.4.1</h2>
<p>Version 1.4.1</p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/dominikh/staticcheck-action/blob/master/CHANGES.md">dominikh/staticcheck-action's
changelog</a>.</em></p>
<blockquote>
<h1>1.4.1</h1>
<ul>
<li>Switch from WillAbides/setup-go-faster to actions/setup-go</li>
<li>Pin our dependencies</li>
</ul>
<h1>1.4.0</h1>
<ul>
<li>Add <code>use-cache</code> option to disable automatic caching</li>
<li>Update README to document all options</li>
</ul>
<h1>1.3.1</h1>
<ul>
<li>Update README to be clearer</li>
<li>Update README to provide timeless examples</li>
<li>Update setup-go-faster dependency from v1.8.0 to v1.14.0</li>
<li>Update actions/cache dependency from v3 to v4</li>
<li>Update installed Go version from 1.19.x to &quot;stable&quot;</li>
</ul>
<h1>1.3.0</h1>
<ul>
<li>Add the output-format option</li>
<li>Add the output-file option</li>
<li>Add the merge-files option</li>
<li>Update action/cache dependency from v2 to v3</li>
<li>Update setup-go-faster dependency from v1.7.0 to v1.8.0</li>
<li>Update installed Go version from 1.17.x to 1.19.x</li>
</ul>
<h1>1.2.0</h1>
<ul>
<li>Add the <code>checks</code> option</li>
<li>Add the <code>working-directory</code> option</li>
</ul>
<h1>1.1.0</h1>
<ul>
<li>The action will store and restore Go's cache if install-go is set to
true.</li>
</ul>
<h1>1.0.0</h1>
<p>Initial release.</p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="9716614d41"><code>9716614</code></a>
Update changelog</li>
<li><a
href="00d98ae742"><code>00d98ae</code></a>
Pin our dependencies</li>
<li><a
href="203eeae4a9"><code>203eeae</code></a>
Switch from WillAbides/setup-go-faster to actions/setup-go</li>
<li>See full diff in <a
href="024238d289...9716614d41">compare
view</a></li>
</ul>
</details>
<br />

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Maciek Kisiel <mkisiel@google.com>
 2026-04-01 15:37:35 +02:00
dependabot[bot]
7c57071947
 		build(deps): bump actions/setup-node from 6.2.0 to 6.3.0 (#875) 
Bumps [actions/setup-node](https://github.com/actions/setup-node) from
6.2.0 to 6.3.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/actions/setup-node/releases">actions/setup-node's
releases</a>.</em></p>
<blockquote>
<h2>v6.3.0</h2>
<h2>What's Changed</h2>
<h3>Enhancements:</h3>
<ul>
<li>Support parsing <code>devEngines</code> field by <a
href="https://github.com/susnux"><code>@​susnux</code></a> in <a
href="https://redirect.github.com/actions/setup-node/pull/1283">actions/setup-node#1283</a></li>
</ul>
<blockquote>
<p>When using node-version-file: package.json, setup-node now
prefers devEngines.runtime over engines.node.</p>
</blockquote>
<h3>Dependency updates:</h3>
<ul>
<li>Fix npm audit issues by <a
href="https://github.com/gowridurgad"><code>@​gowridurgad</code></a> in
<a
href="https://redirect.github.com/actions/setup-node/pull/1491">actions/setup-node#1491</a></li>
<li>Replace uuid with crypto.randomUUID() by <a
href="https://github.com/trivikr"><code>@​trivikr</code></a> in <a
href="https://redirect.github.com/actions/setup-node/pull/1378">actions/setup-node#1378</a></li>
<li>Upgrade minimatch from 3.1.2 to 3.1.5 by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a> in <a
href="https://redirect.github.com/actions/setup-node/pull/1498">actions/setup-node#1498</a></li>
</ul>
<h3>Bug fixes:</h3>
<ul>
<li>Remove hardcoded bearer for mirror-url <a
href="https://github.com/marco-ippolito"><code>@​marco-ippolito</code></a>
in <a
href="https://redirect.github.com/actions/setup-node/pull/1467">actions/setup-node#1467</a></li>
<li>Scope test lockfiles by package manager and update cache tests by <a
href="https://github.com/gowridurgad"><code>@​gowridurgad</code></a> in
<a
href="https://redirect.github.com/actions/setup-node/pull/1495">actions/setup-node#1495</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/susnux"><code>@​susnux</code></a> made
their first contribution in <a
href="https://redirect.github.com/actions/setup-node/pull/1283">actions/setup-node#1283</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/actions/setup-node/compare/v6...v6.3.0">https://github.com/actions/setup-node/compare/v6...v6.3.0</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="53b83947a5"><code>53b8394</code></a>
Bump minimatch from 3.1.2 to 3.1.5 (<a
href="https://redirect.github.com/actions/setup-node/issues/1498">#1498</a>)</li>
<li><a
href="54045abd5d"><code>54045ab</code></a>
Scope test lockfiles by package manager and update cache tests (<a
href="https://redirect.github.com/actions/setup-node/issues/1495">#1495</a>)</li>
<li><a
href="c882bffdbd"><code>c882bff</code></a>
Replace uuid with crypto.randomUUID() (<a
href="https://redirect.github.com/actions/setup-node/issues/1378">#1378</a>)</li>
<li><a
href="774c1d6296"><code>774c1d6</code></a>
feat(node-version-file): support parsing <code>devEngines</code> field
(<a
href="https://redirect.github.com/actions/setup-node/issues/1283">#1283</a>)</li>
<li><a
href="efcb663fc6"><code>efcb663</code></a>
fix: remove hardcoded bearer (<a
href="https://redirect.github.com/actions/setup-node/issues/1467">#1467</a>)</li>
<li><a
href="d02c89dce7"><code>d02c89d</code></a>
Fix npm audit issues (<a
href="https://redirect.github.com/actions/setup-node/issues/1491">#1491</a>)</li>
<li>See full diff in <a
href="6044e13b5d...53b83947a5">compare
view</a></li>
</ul>
</details>
<br />

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
 2026-04-01 11:29:18 +02:00
dependabot[bot]
7b43bf1533
 		build(deps): bump actions/setup-go from 6.3.0 to 6.4.0 (#874) 
Bumps [actions/setup-go](https://github.com/actions/setup-go) from 6.3.0
to 6.4.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/actions/setup-go/releases">actions/setup-go's
releases</a>.</em></p>
<blockquote>
<h2>v6.4.0</h2>
<h2>What's Changed</h2>
<h3>Enhancement</h3>
<ul>
<li>Add go-download-base-url input for custom Go distributions by <a
href="https://github.com/gdams"><code>@​gdams</code></a> in <a
href="https://redirect.github.com/actions/setup-go/pull/721">actions/setup-go#721</a></li>
</ul>
<h3>Dependency update</h3>
<ul>
<li>Upgrade minimatch from 3.1.2 to 3.1.5 by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a> in <a
href="https://redirect.github.com/actions/setup-go/pull/727">actions/setup-go#727</a></li>
</ul>
<h3>Documentation update</h3>
<ul>
<li>Rearrange README.md, add advanced-usage.md by <a
href="https://github.com/priyagupta108"><code>@​priyagupta108</code></a>
in <a
href="https://redirect.github.com/actions/setup-go/pull/724">actions/setup-go#724</a></li>
<li>Fix Microsoft build of Go link by <a
href="https://github.com/gdams"><code>@​gdams</code></a> in <a
href="https://redirect.github.com/actions/setup-go/pull/734">actions/setup-go#734</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/gdams"><code>@​gdams</code></a> made
their first contribution in <a
href="https://redirect.github.com/actions/setup-go/pull/721">actions/setup-go#721</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/actions/setup-go/compare/v6...v6.4.0">https://github.com/actions/setup-go/compare/v6...v6.4.0</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="4a3601121d"><code>4a36011</code></a>
docs: fix Microsoft build of Go link (<a
href="https://redirect.github.com/actions/setup-go/issues/734">#734</a>)</li>
<li><a
href="8f19afcc70"><code>8f19afc</code></a>
feat: add go-download-base-url input for custom Go distributions (<a
href="https://redirect.github.com/actions/setup-go/issues/721">#721</a>)</li>
<li><a
href="27fdb267c1"><code>27fdb26</code></a>
Bump minimatch from 3.1.2 to 3.1.5 (<a
href="https://redirect.github.com/actions/setup-go/issues/727">#727</a>)</li>
<li><a
href="def8c394e3"><code>def8c39</code></a>
Rearrange README.md, add advanced-usage.md (<a
href="https://redirect.github.com/actions/setup-go/issues/724">#724</a>)</li>
<li>See full diff in <a
href="4b73464bb3...4a3601121d">compare
view</a></li>
</ul>
</details>
<br />

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
 2026-04-01 11:26:56 +02:00
dependabot[bot]
d77c67b016
 		build(deps): bump github/codeql-action from 4.32.4 to 4.35.1 (#873) 
Bumps [github/codeql-action](https://github.com/github/codeql-action)
from 4.32.4 to 4.35.1.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/github/codeql-action/releases">github/codeql-action's
releases</a>.</em></p>
<blockquote>
<h2>v4.35.1</h2>
<ul>
<li>Fix incorrect minimum required Git version for <a
href="https://redirect.github.com/github/roadmap/issues/1158">improved
incremental analysis</a>: it should have been 2.36.0, not 2.11.0. <a
href="https://redirect.github.com/github/codeql-action/pull/3781">#3781</a></li>
</ul>
<h2>v4.35.0</h2>
<ul>
<li>Reduced the minimum Git version required for <a
href="https://redirect.github.com/github/roadmap/issues/1158">improved
incremental analysis</a> from 2.38.0 to 2.11.0. <a
href="https://redirect.github.com/github/codeql-action/pull/3767">#3767</a></li>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.25.1">2.25.1</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3773">#3773</a></li>
</ul>
<h2>v4.34.1</h2>
<ul>
<li>Downgrade default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.24.3">2.24.3</a>
due to issues with a small percentage of Actions and JavaScript
analyses. <a
href="https://redirect.github.com/github/codeql-action/pull/3762">#3762</a></li>
</ul>
<h2>v4.34.0</h2>
<ul>
<li>Added an experimental change which disables TRAP caching when <a
href="https://redirect.github.com/github/roadmap/issues/1158">improved
incremental analysis</a> is enabled, since improved incremental analysis
supersedes TRAP caching. This will improve performance and reduce
Actions cache usage. We expect to roll this change out to everyone in
March. <a
href="https://redirect.github.com/github/codeql-action/pull/3569">#3569</a></li>
<li>We are rolling out improved incremental analysis to C/C++ analyses
that use build mode <code>none</code>. We expect this rollout to be
complete by the end of April 2026. <a
href="https://redirect.github.com/github/codeql-action/pull/3584">#3584</a></li>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.25.0">2.25.0</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3585">#3585</a></li>
</ul>
<h2>v4.33.0</h2>
<ul>
<li>
<p>Upcoming change: Starting April 2026, the CodeQL Action will skip
collecting file coverage information on pull requests to improve
analysis performance. File coverage information will still be computed
on non-PR analyses. Pull request analyses will log a warning about this
upcoming change. <a
href="https://redirect.github.com/github/codeql-action/pull/3562">#3562</a></p>
<p>To opt out of this change:</p>
<ul>
<li><strong>Repositories owned by an organization:</strong> Create a
custom repository property with the name
<code>github-codeql-file-coverage-on-prs</code> and the type
&quot;True/false&quot;, then set this property to <code>true</code> in
the repository's settings. For more information, see <a
href="https://docs.github.com/en/organizations/managing-organization-settings/managing-custom-properties-for-repositories-in-your-organization">Managing
custom properties for repositories in your organization</a>.
Alternatively, if you are using an advanced setup workflow, you can set
the <code>CODEQL_ACTION_FILE_COVERAGE_ON_PRS</code> environment variable
to <code>true</code> in your workflow.</li>
<li><strong>User-owned repositories using default setup:</strong> Switch
to an advanced setup workflow and set the
<code>CODEQL_ACTION_FILE_COVERAGE_ON_PRS</code> environment variable to
<code>true</code> in your workflow.</li>
<li><strong>User-owned repositories using advanced setup:</strong> Set
the <code>CODEQL_ACTION_FILE_COVERAGE_ON_PRS</code> environment variable
to <code>true</code> in your workflow.</li>
</ul>
</li>
<li>
<p>Fixed <a
href="https://redirect.github.com/github/codeql-action/issues/3555">a
bug</a> which caused the CodeQL Action to fail loading repository
properties if a &quot;Multi select&quot; repository property was
configured for the repository. <a
href="https://redirect.github.com/github/codeql-action/pull/3557">#3557</a></p>
</li>
<li>
<p>The CodeQL Action now loads <a
href="https://docs.github.com/en/organizations/managing-organization-settings/managing-custom-properties-for-repositories-in-your-organization">custom
repository properties</a> on GitHub Enterprise Server, enabling the
customization of features such as
<code>github-codeql-disable-overlay</code> that was previously only
available on GitHub.com. <a
href="https://redirect.github.com/github/codeql-action/pull/3559">#3559</a></p>
</li>
<li>
<p>Once <a
href="https://docs.github.com/en/code-security/how-tos/secure-at-scale/configure-organization-security/manage-usage-and-access/giving-org-access-private-registries">private
package registries</a> can be configured with OIDC-based authentication
for organizations, the CodeQL Action will now be able to accept such
configurations. <a
href="https://redirect.github.com/github/codeql-action/pull/3563">#3563</a></p>
</li>
<li>
<p>Fixed the retry mechanism for database uploads. Previously this would
fail with the error &quot;Response body object should not be disturbed
or locked&quot;. <a
href="https://redirect.github.com/github/codeql-action/pull/3564">#3564</a></p>
</li>
<li>
<p>A warning is now emitted if the CodeQL Action detects a repository
property whose name suggests that it relates to the CodeQL Action, but
which is not one of the properties recognised by the current version of
the CodeQL Action. <a
href="https://redirect.github.com/github/codeql-action/pull/3570">#3570</a></p>
</li>
</ul>
<h2>v4.32.6</h2>
<ul>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.24.3">2.24.3</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3548">#3548</a></li>
</ul>
<h2>v4.32.5</h2>
<ul>
<li>Repositories owned by an organization can now set up the
<code>github-codeql-disable-overlay</code> custom repository property to
disable <a
href="https://redirect.github.com/github/roadmap/issues/1158">improved
incremental analysis for CodeQL</a>. First, create a custom repository
property with the name <code>github-codeql-disable-overlay</code> and
the type &quot;True/false&quot; in the organization's settings. Then in
the repository's settings, set this property to <code>true</code> to
disable improved incremental analysis. For more information, see <a
href="https://docs.github.com/en/organizations/managing-organization-settings/managing-custom-properties-for-repositories-in-your-organization">Managing
custom properties for repositories in your organization</a>. This
feature is not yet available on GitHub Enterprise Server. <a
href="https://redirect.github.com/github/codeql-action/pull/3507">#3507</a></li>
<li>Added an experimental change so that when <a
href="https://redirect.github.com/github/roadmap/issues/1158">improved
incremental analysis</a> fails on a runner — potentially due to
insufficient disk space — the failure is recorded in the Actions cache
so that subsequent runs will automatically skip improved incremental
analysis until something changes (e.g. a larger runner is provisioned or
a new CodeQL version is released). We expect to roll this change out to
everyone in March. <a
href="https://redirect.github.com/github/codeql-action/pull/3487">#3487</a></li>
<li>The minimum memory check for improved incremental analysis is now
skipped for CodeQL 2.24.3 and later, which has reduced peak RAM usage.
<a
href="https://redirect.github.com/github/codeql-action/pull/3515">#3515</a></li>
<li>Reduced log levels for best-effort private package registry
connection check failures to reduce noise from workflow annotations. <a
href="https://redirect.github.com/github/codeql-action/pull/3516">#3516</a></li>
<li>Added an experimental change which lowers the minimum disk space
requirement for <a
href="https://redirect.github.com/github/roadmap/issues/1158">improved
incremental analysis</a>, enabling it to run on standard GitHub Actions
runners. We expect to roll this change out to everyone in March. <a
href="https://redirect.github.com/github/codeql-action/pull/3498">#3498</a></li>
<li>Added an experimental change which allows the
<code>start-proxy</code> action to resolve the CodeQL CLI version from
feature flags instead of using the linked CLI bundle version. We expect
to roll this change out to everyone in March. <a
href="https://redirect.github.com/github/codeql-action/pull/3512">#3512</a></li>
<li>The previously experimental changes from versions 4.32.3, 4.32.4,
3.32.3 and 3.32.4 are now enabled by default. <a
href="https://redirect.github.com/github/codeql-action/pull/3503">#3503</a>,
<a
href="https://redirect.github.com/github/codeql-action/pull/3504">#3504</a></li>
</ul>
</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'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>
<ul>
<li>The Git version 2.36.0 requirement for improved incremental analysis
now only applies to repositories that contain submodules. <a
href="https://redirect.github.com/github/codeql-action/pull/3789">#3789</a></li>
</ul>
<h2>4.35.1 - 27 Mar 2026</h2>
<ul>
<li>Fix incorrect minimum required Git version for <a
href="https://redirect.github.com/github/roadmap/issues/1158">improved
incremental analysis</a>: it should have been 2.36.0, not 2.11.0. <a
href="https://redirect.github.com/github/codeql-action/pull/3781">#3781</a></li>
</ul>
<h2>4.35.0 - 27 Mar 2026</h2>
<ul>
<li>Reduced the minimum Git version required for <a
href="https://redirect.github.com/github/roadmap/issues/1158">improved
incremental analysis</a> from 2.38.0 to 2.11.0. <a
href="https://redirect.github.com/github/codeql-action/pull/3767">#3767</a></li>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.25.1">2.25.1</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3773">#3773</a></li>
</ul>
<h2>4.34.1 - 20 Mar 2026</h2>
<ul>
<li>Downgrade default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.24.3">2.24.3</a>
due to issues with a small percentage of Actions and JavaScript
analyses. <a
href="https://redirect.github.com/github/codeql-action/pull/3762">#3762</a></li>
</ul>
<h2>4.34.0 - 20 Mar 2026</h2>
<ul>
<li>Added an experimental change which disables TRAP caching when <a
href="https://redirect.github.com/github/roadmap/issues/1158">improved
incremental analysis</a> is enabled, since improved incremental analysis
supersedes TRAP caching. This will improve performance and reduce
Actions cache usage. We expect to roll this change out to everyone in
March. <a
href="https://redirect.github.com/github/codeql-action/pull/3569">#3569</a></li>
<li>We are rolling out improved incremental analysis to C/C++ analyses
that use build mode <code>none</code>. We expect this rollout to be
complete by the end of April 2026. <a
href="https://redirect.github.com/github/codeql-action/pull/3584">#3584</a></li>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.25.0">2.25.0</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3585">#3585</a></li>
</ul>
<h2>4.33.0 - 16 Mar 2026</h2>
<ul>
<li>
<p>Upcoming change: Starting April 2026, the CodeQL Action will skip
collecting file coverage information on pull requests to improve
analysis performance. File coverage information will still be computed
on non-PR analyses. Pull request analyses will log a warning about this
upcoming change. <a
href="https://redirect.github.com/github/codeql-action/pull/3562">#3562</a></p>
<p>To opt out of this change:</p>
<ul>
<li><strong>Repositories owned by an organization:</strong> Create a
custom repository property with the name
<code>github-codeql-file-coverage-on-prs</code> and the type
&quot;True/false&quot;, then set this property to <code>true</code> in
the repository's settings. For more information, see <a
href="https://docs.github.com/en/organizations/managing-organization-settings/managing-custom-properties-for-repositories-in-your-organization">Managing
custom properties for repositories in your organization</a>.
Alternatively, if you are using an advanced setup workflow, you can set
the <code>CODEQL_ACTION_FILE_COVERAGE_ON_PRS</code> environment variable
to <code>true</code> in your workflow.</li>
<li><strong>User-owned repositories using default setup:</strong> Switch
to an advanced setup workflow and set the
<code>CODEQL_ACTION_FILE_COVERAGE_ON_PRS</code> environment variable to
<code>true</code> in your workflow.</li>
<li><strong>User-owned repositories using advanced setup:</strong> Set
the <code>CODEQL_ACTION_FILE_COVERAGE_ON_PRS</code> environment variable
to <code>true</code> in your workflow.</li>
</ul>
</li>
<li>
<p>Fixed <a
href="https://redirect.github.com/github/codeql-action/issues/3555">a
bug</a> which caused the CodeQL Action to fail loading repository
properties if a &quot;Multi select&quot; repository property was
configured for the repository. <a
href="https://redirect.github.com/github/codeql-action/pull/3557">#3557</a></p>
</li>
<li>
<p>The CodeQL Action now loads <a
href="https://docs.github.com/en/organizations/managing-organization-settings/managing-custom-properties-for-repositories-in-your-organization">custom
repository properties</a> on GitHub Enterprise Server, enabling the
customization of features such as
<code>github-codeql-disable-overlay</code> that was previously only
available on GitHub.com. <a
href="https://redirect.github.com/github/codeql-action/pull/3559">#3559</a></p>
</li>
<li>
<p>Once <a
href="https://docs.github.com/en/code-security/how-tos/secure-at-scale/configure-organization-security/manage-usage-and-access/giving-org-access-private-registries">private
package registries</a> can be configured with OIDC-based authentication
for organizations, the CodeQL Action will now be able to accept such
configurations. <a
href="https://redirect.github.com/github/codeql-action/pull/3563">#3563</a></p>
</li>
<li>
<p>Fixed the retry mechanism for database uploads. Previously this would
fail with the error &quot;Response body object should not be disturbed
or locked&quot;. <a
href="https://redirect.github.com/github/codeql-action/pull/3564">#3564</a></p>
</li>
<li>
<p>A warning is now emitted if the CodeQL Action detects a repository
property whose name suggests that it relates to the CodeQL Action, but
which is not one of the properties recognised by the current version of
the CodeQL Action. <a
href="https://redirect.github.com/github/codeql-action/pull/3570">#3570</a></p>
</li>
</ul>
<h2>4.32.6 - 05 Mar 2026</h2>
<ul>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.24.3">2.24.3</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3548">#3548</a></li>
</ul>
<h2>4.32.5 - 02 Mar 2026</h2>
<ul>
<li>Repositories owned by an organization can now set up the
<code>github-codeql-disable-overlay</code> custom repository property to
disable <a
href="https://redirect.github.com/github/roadmap/issues/1158">improved
incremental analysis for CodeQL</a>. First, create a custom repository
property with the name <code>github-codeql-disable-overlay</code> and
the type &quot;True/false&quot; in the organization's settings. Then in
the repository's settings, set this property to <code>true</code> to
disable improved incremental analysis. For more information, see <a
href="https://docs.github.com/en/organizations/managing-organization-settings/managing-custom-properties-for-repositories-in-your-organization">Managing
custom properties for repositories in your organization</a>. This
feature is not yet available on GitHub Enterprise Server. <a
href="https://redirect.github.com/github/codeql-action/pull/3507">#3507</a></li>
<li>Added an experimental change so that when <a
href="https://redirect.github.com/github/roadmap/issues/1158">improved
incremental analysis</a> fails on a runner — potentially due to
insufficient disk space — the failure is recorded in the Actions cache
so that subsequent runs will automatically skip improved incremental
analysis until something changes (e.g. a larger runner is provisioned or
a new CodeQL version is released). We expect to roll this change out to
everyone in March. <a
href="https://redirect.github.com/github/codeql-action/pull/3487">#3487</a></li>
<li>The minimum memory check for improved incremental analysis is now
skipped for CodeQL 2.24.3 and later, which has reduced peak RAM usage.
<a
href="https://redirect.github.com/github/codeql-action/pull/3515">#3515</a></li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="c10b8064de"><code>c10b806</code></a>
Merge pull request <a
href="https://redirect.github.com/github/codeql-action/issues/3782">#3782</a>
from github/update-v4.35.1-d6d1743b8</li>
<li><a
href="c5ffd06837"><code>c5ffd06</code></a>
Update changelog for v4.35.1</li>
<li><a
href="d6d1743b8e"><code>d6d1743</code></a>
Merge pull request <a
href="https://redirect.github.com/github/codeql-action/issues/3781">#3781</a>
from github/henrymercer/update-git-minimum-version</li>
<li><a
href="65d2efa733"><code>65d2efa</code></a>
Add changelog note</li>
<li><a
href="2437b20ab3"><code>2437b20</code></a>
Update minimum git version for overlay to 2.36.0</li>
<li><a
href="ea5f71947c"><code>ea5f719</code></a>
Merge pull request <a
href="https://redirect.github.com/github/codeql-action/issues/3775">#3775</a>
from github/dependabot/npm_and_yarn/node-forge-1.4.0</li>
<li><a
href="45ceeea896"><code>45ceeea</code></a>
Merge pull request <a
href="https://redirect.github.com/github/codeql-action/issues/3777">#3777</a>
from github/mergeback/v4.35.0-to-main-b8bb9f28</li>
<li><a
href="24448c9843"><code>24448c9</code></a>
Rebuild</li>
<li><a
href="7c51060631"><code>7c51060</code></a>
Update changelog and version after v4.35.0</li>
<li><a
href="b8bb9f28b8"><code>b8bb9f2</code></a>
Merge pull request <a
href="https://redirect.github.com/github/codeql-action/issues/3776">#3776</a>
from github/update-v4.35.0-0078ad667</li>
<li>Additional commits viewable in <a
href="89a39a4e59...c10b8064de">compare
view</a></li>
</ul>
</details>
<br />


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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
 2026-04-01 11:24:13 +02:00
Oleksandr Redko
e23b75cd3f
 		internal: remove unused util functions (#871) 
The functions util.Sorted and util.KeySlice are unused.
 2026-03-31 15:40:06 +02:00
Dan McGee
d3fd25b68a
 		mcp: use http.ResponseController to ensure writes are flushed (#870) v1.5.0 v1.5.0-pre.1 
If the ResponseWriter is a wrapped one (which is quite common when using
middleware to log things like response sizes), the direct cast to
`http.Flusher` doesn't find the flush capability. Instead, use
`http.ResponseController` as introduced in go1.20 which handles
unwrapping to find the base response writer.
 2026-03-31 13:13:16 +02:00
Maciej Kisiel
638d404e0d
 		all: stabilize client OAuth support (#861) 
Also fix lint errors that were hidden because of the build tag.
 2026-03-31 12:36:31 +02:00
Kalvin C
c1a12cfeda
 		mcp: accept parameterized Accept media types (#853) 
Normalize accept tokens before validation so valid headers with media
type parameters still match their base media types.

This allows the streamable mcp server to validate the following header
`Accept: application/json;charset=utf-8, text/event-stream`

Co-authored-by: Maciej Kisiel <mkisiel@google.com>
 2026-03-31 11:17:49 +02:00
Oleksandr Redko
a1f808c86e
 		all: modernize code (#868) 
Use `go fix ./...` to modernize the code.
 2026-03-31 10:58:02 +02:00
Ravish Gupta
74d2751d88
 		mcp: return input validation errors as tool results, not JSON-RPC errors (#863) 
This implements [SEP-1303](https://github.com/modelcontextprotocol/modelcontextprotocol/issues/1303).

Input validation errors (missing required fields, wrong types) during
tool calls
are now returned as `CallToolResult` with `IsError=true` instead of
JSON-RPC
`-32602` errors. This allows LLMs to see the validation error and
self-correct,
  per the MCP spec.
The existing pattern for handler-returned errors (lines 347-350 in
server.go)
already converts regular errors to tool results with `IsError=true`.
This change
applies the same pattern to argument schema validation and unmarshal
errors,
  resolving the `TODO(#450)` in the code.                   

Thanks to @iwyrkore for filing the issue and proposing the approach, and
  @findleyr for the cross-SDK analysis in the discussion.
  Fixes #450

Co-authored-by: Maciej Kisiel <mkisiel@google.com>
 2026-03-31 10:14:36 +02:00
Oleksandr Redko
b71a8391a6
 		all: fix typos (#869) 
Grammar issues in docs, comments, and error messages.
 2026-03-30 18:43:01 +02:00
Pranav RK
2d43865b97
 		Enterprise managed authorization (#770) 
`auth`, `oauthex`: implement Enterprise Managed Authorization (SEP-990)
This PR implements Enterprise Managed Authorization (SEP-990) for the Go
MCP SDK, enabling MCP Clients and Servers to leverage enterprise
Identity Providers for seamless authorization without requiring users to
authenticate separately to each MCP Server.
 Overview
Enterprise Managed Authorization follows the Identity Assertion
Authorization Grant specification
(draft-ietf-oauth-identity-assertion-authz-grant), implementing a
three-step flow:
1. **Single Sign-On (SSO)**: User authenticates to the MCP Client via
enterprise IdP (Okta, Auth0, Azure AD, etc.)
2. **Token Exchange (RFC 8693)**: Client exchanges ID Token for Identity
Assertion JWT Authorization Grant (ID-JAG) at the IdP
3. **JWT Bearer Grant (RFC 7523)**: Client exchanges ID-JAG for Access
Token at the MCP Server
This enables:
- **For end users**: Single sign-on across MCP Clients and Servers—no
manual connection/authorization per server
- **For enterprise admins**: Centralized visibility and control over
which MCP Servers can be used within the organization
- **For MCP clients**: Automatic token acquisition without user
interaction for each server

Closes:
[#628](https://github.com/modelcontextprotocol/go-sdk/issues/628)

---------

Co-authored-by: Maciej Kisiel <mkisiel@google.com>
 2026-03-30 16:29:30 +02:00
Maciej Kisiel
05277f6e3c
 		oauthex: use internal JSON library for decoding. (#866) 2026-03-30 14:52:15 +02:00
Jonathan Amsterdam
150bca797d
 		mcp: handle empty chunks in MemoryEventStore (#862) 
When purging chunks, allow empty chunks without panicking.

Fixes #860.
 2026-03-27 16:58:03 +01:00
Maciej Kisiel
755b9ed4df
 		mcp: re-enable race test after fixing data races (#851) 
1. (non-test) Don't queue notifications if there are no connected
sessions.
2. Change `reconnectInitialDelay` to be atomic, as it is modified in
tests.
3. Protect map access with mutex in `TestServerTransportCleanup`.
 2026-03-23 08:35:27 +01:00
Maciej Kisiel
ea161959d7
 		all: clean up Go 1.24 specific code. (#850) 2026-03-20 12:28:56 +01:00
Steven Chen
48879f01c9
 		mcp: fix setProgressToken when Meta is nil (#846) 
When `SetProgressToken` is called on a `Params` struct with a nil `Meta`
field, the newly created map is never assigned back to the struct via
`SetMeta`, causing the progress token to be silently lost.

Call `p.SetMeta(m)` after creating the new map so the struct retains the
reference.

Fixes #845

Co-authored-by: Maciej Kisiel <mkisiel@google.com>
 2026-03-18 10:57:45 +01:00
Maciej Kisiel
6af642cc79
 		auth: return scope in WWW-Authenticate header. (#834) 
Also, emit the resource metadata URL in quotes to ensure proper parsing.


https://modelcontextprotocol.io/specification/2025-11-25/basic/authorization#protected-resource-metadata-discovery-requirements
 2026-03-17 16:34:10 +01:00
Maciej Kisiel
a433a831d6
 		mcp: verify 'Origin' and 'Content-Type' headers (#842) 
This PR introduces protection against cross-origin requests by
installing `http.CrossOriginProtection`.
By default, the zero value is used which does not contain any trusted
origins or bypass patterns.
The protection can be customized by providing a custom
`http.CrossOriginProtection` in `mcp.StreamableHTTPOptions`. Currently,
the deny handler set on the protection is ignored.
This default has an MCPGODEBUG option (`disableoriginverification`) to
disable the default protection.
It will be available until `v1.6.0` of the SDK.
We also increase the Go version required by the SDK to 1.25, since this
is the version that introduced `http.CrossOriginProtection`. This is in
line with the SDK's policy of supporting two newest Go versions (1.26
was released in February 2026).

Additionally, we start validating if the `Content-Type` header for
`POST` requests is set to `application/json` to avoid accepting
CORS-safelisted requests.
 2026-03-13 11:36:41 +01:00
Maciej Kisiel
d836ceb87d
 		auth: allow passing custom http.Client to AuthorizationCodeHandler (#840) 2026-03-13 10:06:58 +01:00
Maciej Kisiel
724dd47aa3
 		internal: fix Unicode zero character handling (#841) 
A fix was submitted to our dependency, tests added to validate the
problematic scenario.

We also added some fuzz tests to check for additional issues, none were
found.
 2026-03-12 21:54:23 +01:00
Maciej Kisiel
4cdbaaf271
 		examples: add an example that display header forwarding. (#836) 
Created to document the way it can be done discussed in #373.

Fixes #373
 2026-03-10 10:57:55 +01:00
Maciej Kisiel
16d990b041
 		mcp: protect ioConn.protocolVersion with a mutex (#832) 
This is done to prevent concurrent reads and writes, which violate Go's
memory model. The concurrent write may be triggered e.g. by setting the
log level on
the client side.

Fixes #828
 2026-03-03 15:13:10 +01:00
Robert Findley
4e1c3a34b5
 		mcp: update latestProtocolVersion to 2025-11-25 (#724) 
Update the SDK to use protocol version 2025-11-25 as the latest
supported version. Fix tests and examples that had hardcoded
expectations for the previous version (2025-06-18).

---------

Co-authored-by: Maciej Kisiel <mkisiel@google.com>
 2026-03-03 10:30:11 +01:00
dependabot[bot]
41ac43d2ed
 		build(deps): bump github/codeql-action from 3 to 4 (#823) 
Bumps [github/codeql-action](https://github.com/github/codeql-action)
from 3 to 4.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/github/codeql-action/releases">github/codeql-action's
releases</a>.</em></p>
<blockquote>
<h2>v3.32.4</h2>
<ul>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.24.2">2.24.2</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3493">#3493</a></li>
<li>Added an experimental change which improves how certificates are
generated for the authentication proxy that is used by the CodeQL Action
in Default Setup when <a
href="https://docs.github.com/en/code-security/how-tos/secure-at-scale/configure-organization-security/manage-usage-and-access/giving-org-access-private-registries">private
package registries are configured</a>. This is expected to generate more
widely compatible certificates and should have no impact on analyses
which are working correctly already. We expect to roll this change out
to everyone in February. <a
href="https://redirect.github.com/github/codeql-action/pull/3473">#3473</a></li>
<li>When the CodeQL Action is run <a
href="https://docs.github.com/en/code-security/how-tos/scan-code-for-vulnerabilities/troubleshooting/troubleshooting-analysis-errors/logs-not-detailed-enough#creating-codeql-debugging-artifacts-for-codeql-default-setup">with
debugging enabled in Default Setup</a> and <a
href="https://docs.github.com/en/code-security/how-tos/secure-at-scale/configure-organization-security/manage-usage-and-access/giving-org-access-private-registries">private
package registries are configured</a>, the &quot;Setup proxy for
registries&quot; step will output additional diagnostic information that
can be used for troubleshooting. <a
href="https://redirect.github.com/github/codeql-action/pull/3486">#3486</a></li>
<li>Added a setting which allows the CodeQL Action to enable network
debugging for Java programs. This will help GitHub staff support
customers with troubleshooting issues in GitHub-managed CodeQL
workflows, such as Default Setup. This setting can only be enabled by
GitHub staff. <a
href="https://redirect.github.com/github/codeql-action/pull/3485">#3485</a></li>
<li>Added a setting which enables GitHub-managed workflows, such as
Default Setup, to use a <a
href="https://github.com/dsp-testing/codeql-cli-nightlies">nightly
CodeQL CLI release</a> instead of the latest, stable release that is
used by default. This will help GitHub staff support customers whose
analyses for a given repository or organization require early access to
a change in an upcoming CodeQL CLI release. This setting can only be
enabled by GitHub staff. <a
href="https://redirect.github.com/github/codeql-action/pull/3484">#3484</a></li>
</ul>
<h2>v3.32.3</h2>
<ul>
<li>Added experimental support for testing connections to <a
href="https://docs.github.com/en/code-security/how-tos/secure-at-scale/configure-organization-security/manage-usage-and-access/giving-org-access-private-registries">private
package registries</a>. This feature is not currently enabled for any
analysis. In the future, it may be enabled by default for Default Setup.
<a
href="https://redirect.github.com/github/codeql-action/pull/3466">#3466</a></li>
</ul>
<h2>v3.32.2</h2>
<ul>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.24.1">2.24.1</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3460">#3460</a></li>
</ul>
<h2>v3.32.1</h2>
<ul>
<li>A warning is now shown in Default Setup workflow logs if a <a
href="https://docs.github.com/en/code-security/how-tos/secure-at-scale/configure-organization-security/manage-usage-and-access/giving-org-access-private-registries">private
package registry is configured</a> using a GitHub Personal Access Token
(PAT), but no username is configured. <a
href="https://redirect.github.com/github/codeql-action/pull/3422">#3422</a></li>
<li>Fixed a bug which caused the CodeQL Action to fail when repository
properties cannot successfully be retrieved. <a
href="https://redirect.github.com/github/codeql-action/pull/3421">#3421</a></li>
</ul>
<h2>v3.32.0</h2>
<ul>
<li>Update default CodeQL bundle version to <a
href="https://github.com/github/codeql-action/releases/tag/codeql-bundle-v2.24.0">2.24.0</a>.
<a
href="https://redirect.github.com/github/codeql-action/pull/3425">#3425</a></li>
</ul>
<h2>v3.31.11</h2>
<ul>
<li>When running a Default Setup workflow with <a
href="https://docs.github.com/en/actions/how-tos/monitor-workflows/enable-debug-logging">Actions
debugging enabled</a>, the CodeQL Action will now use more unique names
when uploading logs from the Dependabot authentication proxy as workflow
artifacts. This ensures that the artifact names do not clash between
multiple jobs in a build matrix. <a
href="https://redirect.github.com/github/codeql-action/pull/3409">#3409</a></li>
<li>Improved error handling throughout the CodeQL Action. <a
href="https://redirect.github.com/github/codeql-action/pull/3415">#3415</a></li>
<li>Added experimental support for automatically excluding <a
href="https://docs.github.com/en/repositories/working-with-files/managing-files/customizing-how-changed-files-appear-on-github">generated
files</a> from the analysis. This feature is not currently enabled for
any analysis. In the future, it may be enabled by default for some
GitHub-managed analyses. <a
href="https://redirect.github.com/github/codeql-action/pull/3318">#3318</a></li>
<li>The changelog extracts that are included with releases of the CodeQL
Action are now shorter to avoid duplicated information from appearing in
Dependabot PRs. <a
href="https://redirect.github.com/github/codeql-action/pull/3403">#3403</a></li>
</ul>
<h2>v3.31.10</h2>
<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>3.31.10 - 12 Jan 2026</h2>
<ul>
<li>Update default CodeQL bundle version to 2.23.9. <a
href="https://redirect.github.com/github/codeql-action/pull/3393">#3393</a></li>
</ul>
<p>See the full <a
href="https://github.com/github/codeql-action/blob/v3.31.10/CHANGELOG.md">CHANGELOG.md</a>
for more information.</p>
<h2>v3.31.9</h2>
<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>3.31.9 - 16 Dec 2025</h2>
<p>No user facing changes.</p>
<p>See the full <a
href="https://github.com/github/codeql-action/blob/v3.31.9/CHANGELOG.md">CHANGELOG.md</a>
for more information.</p>
<h2>v3.31.8</h2>
<h1>CodeQL Action Changelog</h1>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="5c96b6e3db"><code>5c96b6e</code></a>
Add JSDoc comments to <code>upload-lib</code> types</li>
<li><a
href="44a4bea367"><code>44a4bea</code></a>
Fixup: add missing <code>.env</code></li>
<li><a
href="11c6c18818"><code>11c6c18</code></a>
Only run when debugging or test mode is enabled</li>
<li><a
href="99fcc7b2a1"><code>99fcc7b</code></a>
Check whether <code>value</code> is a URL in <code>checkEnvVar</code>
and clear credentials</li>
<li><a
href="c1d6ee5477"><code>c1d6ee5</code></a>
Fix typos</li>
<li><a
href="ef9cfd91a8"><code>ef9cfd9</code></a>
Clear GHA <code>JAVA_HOME_*</code> env vars for
<code>discoverActionsJdks</code> test</li>
<li>See full diff in <a
href="https://github.com/github/codeql-action/compare/v3...v4">compare
view</a></li>
</ul>
</details>
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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Maciek Kisiel <mkisiel@google.com>
 2026-03-02 13:03:07 +01:00
Maciej Kisiel
f52a48dc9b
 		chore: update deps after v1.4.0 release (#829) 2026-03-02 12:50:13 +01:00
Maciej Kisiel
f4e769f674
 		auth: fix 2025-03-26 backcompat (#821) 2026-03-02 11:20:57 +01:00
Maciej Kisiel
455fd93d97
 		mcp: simplify and unify unit tests introduced for sampling with tools. (#799) 2026-03-02 10:55:35 +01:00
dependabot[bot]
0bbe9369a9
 		build(deps): bump actions/checkout from 4.2.2 to 6.0.2 (#826) 
Bumps [actions/checkout](https://github.com/actions/checkout) from 4.2.2
to 6.0.2.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/actions/checkout/releases">actions/checkout's
releases</a>.</em></p>
<blockquote>
<h2>v6.0.2</h2>
<h2>What's Changed</h2>
<ul>
<li>Add orchestration_id to git user-agent when ACTIONS_ORCHESTRATION_ID
is set by <a
href="https://github.com/TingluoHuang"><code>@​TingluoHuang</code></a>
in <a
href="https://redirect.github.com/actions/checkout/pull/2355">actions/checkout#2355</a></li>
<li>Fix tag handling: preserve annotations and explicit fetch-tags by <a
href="https://github.com/ericsciple"><code>@​ericsciple</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2356">actions/checkout#2356</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/actions/checkout/compare/v6.0.1...v6.0.2">https://github.com/actions/checkout/compare/v6.0.1...v6.0.2</a></p>
<h2>v6.0.1</h2>
<h2>What's Changed</h2>
<ul>
<li>Update all references from v5 and v4 to v6 by <a
href="https://github.com/ericsciple"><code>@​ericsciple</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2314">actions/checkout#2314</a></li>
<li>Add worktree support for persist-credentials includeIf by <a
href="https://github.com/ericsciple"><code>@​ericsciple</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2327">actions/checkout#2327</a></li>
<li>Clarify v6 README by <a
href="https://github.com/ericsciple"><code>@​ericsciple</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2328">actions/checkout#2328</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/actions/checkout/compare/v6...v6.0.1">https://github.com/actions/checkout/compare/v6...v6.0.1</a></p>
<h2>v6.0.0</h2>
<h2>What's Changed</h2>
<ul>
<li>Update README to include Node.js 24 support details and requirements
by <a href="https://github.com/salmanmkc"><code>@​salmanmkc</code></a>
in <a
href="https://redirect.github.com/actions/checkout/pull/2248">actions/checkout#2248</a></li>
<li>Persist creds to a separate file by <a
href="https://github.com/ericsciple"><code>@​ericsciple</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2286">actions/checkout#2286</a></li>
<li>v6-beta by <a
href="https://github.com/ericsciple"><code>@​ericsciple</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2298">actions/checkout#2298</a></li>
<li>update readme/changelog for v6 by <a
href="https://github.com/ericsciple"><code>@​ericsciple</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2311">actions/checkout#2311</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/actions/checkout/compare/v5.0.0...v6.0.0">https://github.com/actions/checkout/compare/v5.0.0...v6.0.0</a></p>
<h2>v6-beta</h2>
<h2>What's Changed</h2>
<p>Updated persist-credentials to store the credentials under
<code>$RUNNER_TEMP</code> instead of directly in the local git
config.</p>
<p>This requires a minimum Actions Runner version of <a
href="https://github.com/actions/runner/releases/tag/v2.329.0">v2.329.0</a>
to access the persisted credentials for <a
href="https://docs.github.com/en/actions/tutorials/use-containerized-services/create-a-docker-container-action">Docker
container action</a> scenarios.</p>
<h2>v5.0.1</h2>
<h2>What's Changed</h2>
<ul>
<li>Port v6 cleanup to v5 by <a
href="https://github.com/ericsciple"><code>@​ericsciple</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2301">actions/checkout#2301</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/actions/checkout/compare/v5...v5.0.1">https://github.com/actions/checkout/compare/v5...v5.0.1</a></p>
<h2>v5.0.0</h2>
<h2>What's Changed</h2>
<ul>
<li>Update actions checkout to use node 24 by <a
href="https://github.com/salmanmkc"><code>@​salmanmkc</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2226">actions/checkout#2226</a></li>
<li>Prepare v5.0.0 release by <a
href="https://github.com/salmanmkc"><code>@​salmanmkc</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2238">actions/checkout#2238</a></li>
</ul>
<h2>⚠️ Minimum Compatible Runner Version</h2>
<p><strong>v2.327.1</strong><br />
<a
href="https://github.com/actions/runner/releases/tag/v2.327.1">Release
Notes</a></p>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/actions/checkout/blob/main/CHANGELOG.md">actions/checkout's
changelog</a>.</em></p>
<blockquote>
<h1>Changelog</h1>
<h2>v6.0.2</h2>
<ul>
<li>Fix tag handling: preserve annotations and explicit fetch-tags by <a
href="https://github.com/ericsciple"><code>@​ericsciple</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2356">actions/checkout#2356</a></li>
</ul>
<h2>v6.0.1</h2>
<ul>
<li>Add worktree support for persist-credentials includeIf by <a
href="https://github.com/ericsciple"><code>@​ericsciple</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2327">actions/checkout#2327</a></li>
</ul>
<h2>v6.0.0</h2>
<ul>
<li>Persist creds to a separate file by <a
href="https://github.com/ericsciple"><code>@​ericsciple</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2286">actions/checkout#2286</a></li>
<li>Update README to include Node.js 24 support details and requirements
by <a href="https://github.com/salmanmkc"><code>@​salmanmkc</code></a>
in <a
href="https://redirect.github.com/actions/checkout/pull/2248">actions/checkout#2248</a></li>
</ul>
<h2>v5.0.1</h2>
<ul>
<li>Port v6 cleanup to v5 by <a
href="https://github.com/ericsciple"><code>@​ericsciple</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2301">actions/checkout#2301</a></li>
</ul>
<h2>v5.0.0</h2>
<ul>
<li>Update actions checkout to use node 24 by <a
href="https://github.com/salmanmkc"><code>@​salmanmkc</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2226">actions/checkout#2226</a></li>
</ul>
<h2>v4.3.1</h2>
<ul>
<li>Port v6 cleanup to v4 by <a
href="https://github.com/ericsciple"><code>@​ericsciple</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2305">actions/checkout#2305</a></li>
</ul>
<h2>v4.3.0</h2>
<ul>
<li>docs: update README.md by <a
href="https://github.com/motss"><code>@​motss</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/1971">actions/checkout#1971</a></li>
<li>Add internal repos for checking out multiple repositories by <a
href="https://github.com/mouismail"><code>@​mouismail</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/1977">actions/checkout#1977</a></li>
<li>Documentation update - add recommended permissions to Readme by <a
href="https://github.com/benwells"><code>@​benwells</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2043">actions/checkout#2043</a></li>
<li>Adjust positioning of user email note and permissions heading by <a
href="https://github.com/joshmgross"><code>@​joshmgross</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2044">actions/checkout#2044</a></li>
<li>Update README.md by <a
href="https://github.com/nebuk89"><code>@​nebuk89</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2194">actions/checkout#2194</a></li>
<li>Update CODEOWNERS for actions by <a
href="https://github.com/TingluoHuang"><code>@​TingluoHuang</code></a>
in <a
href="https://redirect.github.com/actions/checkout/pull/2224">actions/checkout#2224</a></li>
<li>Update package dependencies by <a
href="https://github.com/salmanmkc"><code>@​salmanmkc</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/2236">actions/checkout#2236</a></li>
</ul>
<h2>v4.2.2</h2>
<ul>
<li><code>url-helper.ts</code> now leverages well-known environment
variables by <a href="https://github.com/jww3"><code>@​jww3</code></a>
in <a
href="https://redirect.github.com/actions/checkout/pull/1941">actions/checkout#1941</a></li>
<li>Expand unit test coverage for <code>isGhes</code> by <a
href="https://github.com/jww3"><code>@​jww3</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/1946">actions/checkout#1946</a></li>
</ul>
<h2>v4.2.1</h2>
<ul>
<li>Check out other refs/* by commit if provided, fall back to ref by <a
href="https://github.com/orhantoy"><code>@​orhantoy</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/1924">actions/checkout#1924</a></li>
</ul>
<h2>v4.2.0</h2>
<ul>
<li>Add Ref and Commit outputs by <a
href="https://github.com/lucacome"><code>@​lucacome</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/1180">actions/checkout#1180</a></li>
<li>Dependency updates by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a>- <a
href="https://redirect.github.com/actions/checkout/pull/1777">actions/checkout#1777</a>,
<a
href="https://redirect.github.com/actions/checkout/pull/1872">actions/checkout#1872</a></li>
</ul>
<h2>v4.1.7</h2>
<ul>
<li>Bump the minor-npm-dependencies group across 1 directory with 4
updates by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/1739">actions/checkout#1739</a></li>
<li>Bump actions/checkout from 3 to 4 by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/1697">actions/checkout#1697</a></li>
<li>Check out other refs/* by commit by <a
href="https://github.com/orhantoy"><code>@​orhantoy</code></a> in <a
href="https://redirect.github.com/actions/checkout/pull/1774">actions/checkout#1774</a></li>
<li>Pin actions/checkout's own workflows to a known, good, stable
version. by <a href="https://github.com/jww3"><code>@​jww3</code></a> in
<a
href="https://redirect.github.com/actions/checkout/pull/1776">actions/checkout#1776</a></li>
</ul>
<h2>v4.1.6</h2>
<ul>
<li>Check platform to set archive extension appropriately by <a
href="https://github.com/cory-miller"><code>@​cory-miller</code></a> in
<a
href="https://redirect.github.com/actions/checkout/pull/1732">actions/checkout#1732</a></li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="de0fac2e45"><code>de0fac2</code></a>
Fix tag handling: preserve annotations and explicit fetch-tags (<a
href="https://redirect.github.com/actions/checkout/issues/2356">#2356</a>)</li>
<li><a
href="064fe7f331"><code>064fe7f</code></a>
Add orchestration_id to git user-agent when ACTIONS_ORCHESTRATION_ID is
set (...</li>
<li><a
href="8e8c483db8"><code>8e8c483</code></a>
Clarify v6 README (<a
href="https://redirect.github.com/actions/checkout/issues/2328">#2328</a>)</li>
<li><a
href="033fa0dc0b"><code>033fa0d</code></a>
Add worktree support for persist-credentials includeIf (<a
href="https://redirect.github.com/actions/checkout/issues/2327">#2327</a>)</li>
<li><a
href="c2d88d3ecc"><code>c2d88d3</code></a>
Update all references from v5 and v4 to v6 (<a
href="https://redirect.github.com/actions/checkout/issues/2314">#2314</a>)</li>
<li><a
href="1af3b93b68"><code>1af3b93</code></a>
update readme/changelog for v6 (<a
href="https://redirect.github.com/actions/checkout/issues/2311">#2311</a>)</li>
<li><a
href="71cf2267d8"><code>71cf226</code></a>
v6-beta (<a
href="https://redirect.github.com/actions/checkout/issues/2298">#2298</a>)</li>
<li><a
href="069c695914"><code>069c695</code></a>
Persist creds to a separate file (<a
href="https://redirect.github.com/actions/checkout/issues/2286">#2286</a>)</li>
<li><a
href="ff7abcd0c3"><code>ff7abcd</code></a>
Update README to include Node.js 24 support details and requirements (<a
href="https://redirect.github.com/actions/checkout/issues/2248">#2248</a>)</li>
<li><a
href="08c6903cd8"><code>08c6903</code></a>
Prepare v5.0.0 release (<a
href="https://redirect.github.com/actions/checkout/issues/2238">#2238</a>)</li>
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dependabot[bot]
e10805dbaa
 		build(deps): bump actions/setup-go from 6.2.0 to 6.3.0 (#827) 
Bumps [actions/setup-go](https://github.com/actions/setup-go) from 6.2.0
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<details>
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<h2>v6.3.0</h2>
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Fix golang download url to go.dev (<a
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Update default Go module caching to use go.mod (<a
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dependabot[bot]
e3a5a49ea8
 		build(deps): bump ossf/scorecard-action from 2.4.1 to 2.4.3 (#825) 
Bumps [ossf/scorecard-action](https://github.com/ossf/scorecard-action)
from 2.4.1 to 2.4.3.
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<h2>v2.4.3</h2>
<h2>What's Changed</h2>
<p>This update bumps the Scorecard version to the v5.3.0 release. For a
complete list of changes, please refer to the <a
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<h2>Documentation</h2>
<ul>
<li>docs: clarify <code>GITHUB_TOKEN</code> permissions needed for
private repos by <a
href="https://github.com/pankajtaneja5"><code>@​pankajtaneja5</code></a>
in <a
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<li>📖 Fix recommended command to test the image in development by
<a
href="https://github.com/deivid-rodriguez"><code>@​deivid-rodriguez</code></a>
in <a
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<h2>Other</h2>
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<li>add missing top-level token permissions to workflows by <a
href="https://github.com/timothyklee"><code>@​timothyklee</code></a> in
<a
href="https://redirect.github.com/ossf/scorecard-action/pull/1566">ossf/scorecard-action#1566</a></li>
<li>setup codeowners for requesting reviews by <a
href="https://github.com/spencerschrock"><code>@​spencerschrock</code></a>
in <a
href="https://redirect.github.com/ossf/scorecard-action/pull/1576">ossf/scorecard-action#1576</a></li>
<li>🌱 Improve printing options by <a
href="https://github.com/deivid-rodriguez"><code>@​deivid-rodriguez</code></a>
in <a
href="https://redirect.github.com/ossf/scorecard-action/pull/1584">ossf/scorecard-action#1584</a></li>
</ul>
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<ul>
<li><a
href="https://github.com/timothyklee"><code>@​timothyklee</code></a>
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href="https://redirect.github.com/ossf/scorecard-action/pull/1566">ossf/scorecard-action#1566</a></li>
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<h2>v2.4.2</h2>
<h2>What's Changed</h2>
<p>This update bumps the Scorecard version to the v5.2.1 release. For a
complete list of changes, please refer to the Scorecard <a
href="https://github.com/ossf/scorecard/releases/tag/v5.2.0">v5.2.0</a>
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href="https://github.com/ossf/scorecard/releases/tag/v5.2.1">v5.2.1</a>
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bump docker to ghcr v2.4.3 (<a
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🌱 Bump the github-actions group with 3 updates (<a
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🌱 Bump github.com/sigstore/cosign/v2 from 2.5.2 to 2.6.0 (<a
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Bump github.com/ossf/scorecard/v5 from v5.2.1 to v5.3.0 (<a
href="https://redirect.github.com/ossf/scorecard-action/issues/1586">#1586</a>)</li>
<li><a
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📖 Fix recommended command to test the image in development (<a
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<li><a
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🌱 Bump the docker-images group across 1 directory with 2
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<li><a
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🌱 Bump github.com/spf13/cobra from 1.9.1 to 1.10.1 (<a
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<li><a
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🌱 Bump the github-actions group with 2 updates (<a
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🌱 Improve printing options (<a
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 		build(deps): bump actions/upload-artifact from 4.6.1 to 7.0.0 (#824) 
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<li><a href="https://github.com/Link"><code>@​Link</code></a>- made
their first contribution in <a
href="https://redirect.github.com/actions/upload-artifact/pull/754">actions/upload-artifact#754</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/actions/upload-artifact/compare/v6...v7.0.0">https://github.com/actions/upload-artifact/compare/v6...v7.0.0</a></p>
<h2>v6.0.0</h2>
<h2>v6 - What's new</h2>
<blockquote>
<p>[!IMPORTANT]
actions/upload-artifact@v6 now runs on Node.js 24 (<code>runs.using:
node24</code>) and requires a minimum Actions Runner version of 2.327.1.
If you are using self-hosted runners, ensure they are updated before
upgrading.</p>
</blockquote>
<h3>Node.js 24</h3>
<p>This release updates the runtime to Node.js 24. v5 had preliminary
support for Node.js 24, however this action was by default still running
on Node.js 20. Now this action by default will run on Node.js 24.</p>
<h2>What's Changed</h2>
<ul>
<li>Upload Artifact Node 24 support by <a
href="https://github.com/salmanmkc"><code>@​salmanmkc</code></a> in <a
href="https://redirect.github.com/actions/upload-artifact/pull/719">actions/upload-artifact#719</a></li>
<li>fix: update <code>@​actions/artifact</code> for Node.js 24 punycode
deprecation by <a
href="https://github.com/salmanmkc"><code>@​salmanmkc</code></a> in <a
href="https://redirect.github.com/actions/upload-artifact/pull/744">actions/upload-artifact#744</a></li>
<li>prepare release v6.0.0 for Node.js 24 support by <a
href="https://github.com/salmanmkc"><code>@​salmanmkc</code></a> in <a
href="https://redirect.github.com/actions/upload-artifact/pull/745">actions/upload-artifact#745</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/actions/upload-artifact/compare/v5.0.0...v6.0.0">https://github.com/actions/upload-artifact/compare/v5.0.0...v6.0.0</a></p>
<h2>v5.0.0</h2>
<h2>What's Changed</h2>
<p><strong>BREAKING CHANGE:</strong> this update supports Node
<code>v24.x</code>. This is not a breaking change per-se but we're
treating it as such.</p>
<ul>
<li>Update README.md by <a
href="https://github.com/GhadimiR"><code>@​GhadimiR</code></a> in <a
href="https://redirect.github.com/actions/upload-artifact/pull/681">actions/upload-artifact#681</a></li>
<li>Update README.md by <a
href="https://github.com/nebuk89"><code>@​nebuk89</code></a> in <a
href="https://redirect.github.com/actions/upload-artifact/pull/712">actions/upload-artifact#712</a></li>
<li>Readme: spell out the first use of GHES by <a
href="https://github.com/danwkennedy"><code>@​danwkennedy</code></a> in
<a
href="https://redirect.github.com/actions/upload-artifact/pull/727">actions/upload-artifact#727</a></li>
<li>Update GHES guidance to include reference to Node 20 version by <a
href="https://github.com/patrikpolyak"><code>@​patrikpolyak</code></a>
in <a
href="https://redirect.github.com/actions/upload-artifact/pull/725">actions/upload-artifact#725</a></li>
<li>Bump <code>@actions/artifact</code> to <code>v4.0.0</code></li>
<li>Prepare <code>v5.0.0</code> by <a
href="https://github.com/danwkennedy"><code>@​danwkennedy</code></a> in
<a
href="https://redirect.github.com/actions/upload-artifact/pull/734">actions/upload-artifact#734</a></li>
</ul>
<!-- raw HTML omitted -->
</blockquote>
<p>... (truncated)</p>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="bbbca2ddaa"><code>bbbca2d</code></a>
Support direct file uploads (<a
href="https://redirect.github.com/actions/upload-artifact/issues/764">#764</a>)</li>
<li><a
href="589182c5a4"><code>589182c</code></a>
Upgrade the module to ESM and bump dependencies (<a
href="https://redirect.github.com/actions/upload-artifact/issues/762">#762</a>)</li>
<li><a
href="47309c993a"><code>47309c9</code></a>
Merge pull request <a
href="https://redirect.github.com/actions/upload-artifact/issues/754">#754</a>
from actions/Link-/add-proxy-integration-tests</li>
<li><a
href="02a8460834"><code>02a8460</code></a>
Add proxy integration test</li>
<li><a
href="b7c566a772"><code>b7c566a</code></a>
Merge pull request <a
href="https://redirect.github.com/actions/upload-artifact/issues/745">#745</a>
from actions/upload-artifact-v6-release</li>
<li><a
href="e516bc8500"><code>e516bc8</code></a>
docs: correct description of Node.js 24 support in README</li>
<li><a
href="ddc45ed9bc"><code>ddc45ed</code></a>
docs: update README to correct action name for Node.js 24 support</li>
<li><a
href="615b319bd2"><code>615b319</code></a>
chore: release v6.0.0 for Node.js 24 support</li>
<li><a
href="017748b48f"><code>017748b</code></a>
Merge pull request <a
href="https://redirect.github.com/actions/upload-artifact/issues/744">#744</a>
from actions/fix-storage-blob</li>
<li><a
href="38d4c7997f"><code>38d4c79</code></a>
chore: rebuild dist</li>
<li>Additional commits viewable in <a
href="4cec3d8aa0...bbbca2ddaa">compare
view</a></li>
</ul>
</details>
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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
 2026-03-02 08:38:45 +01:00
Maciej Kisiel
83f7e968f8
 		examples: fix OAuth client example after latest changes. (#820) 2026-02-27 17:04:25 +01:00
Maciej Kisiel
c9317fb5b7
 		all: client side OAuth support (#785) v1.4.0 
This PR introduces client-side OAuth support.

# Overall design philosophy

The main new interface introduced to support client-side OAuth is the
`OAuthHandler`. Contrary to its counter-parts in some other SDKs, it is
intentionally small and generic so that it can support most of the OAuth
authorization flow variants. The main `mcp` package purposefully
delegates almost all auth handling to `OAuthHandler` implementations.
This way, the `mcp` package continues to be largely OAuth agnostic.

The `auth` package comes with a default `OAuthHandler` implementation –
`AuthorizationCodeHandler`, which implements the authorization flow
for the `authorization_code` grant type, as defined in the [MCP
specification](https://modelcontextprotocol.io/specification/2025-11-25/basic/authorization).
It is expected that the `OAuthHandler` implementation granularity will
be roughly per grant type, as this parameter influences the
authorization flow the most.

# Detailed design

## `OAuthHandler` (auth/client.go)

The main interface for the integration consists of two methods:

```go
type OAuthHandler interface {
	// TokenSource returns a token source to be used for outgoing requests.
	// Returned token source might be nil. In that case, the transport will not
	// add any authorization headers to the request.
	TokenSource(context.Context) (oauth2.TokenSource, error)

	// Authorize is called when an HTTP request results in an error that may
	// be addressed by the authorization flow (currently 401 Unauthorized and 403 Forbidden).
	// It is responsible for performing the OAuth flow to obtain an access token.
	// The arguments are the request that failed and the response that was received for it.
	// The headers of the request are available, but the body will have already been consumed
	// when Authorize is called.
	// If the returned error is nil, TokenSource is expected to return a non-nil token source.
	// After a successful call to Authorize, the HTTP request will be retried by the transport.
	// The function is responsible for closing the response body.
	Authorize(context.Context, *http.Request, *http.Response) error
}
```

`StreamableClientTransport` accepts this interface as a field and uses
the `TokenSource` method to add an `Authorization: Bearer` header to
outgoing requests to the MCP server. If the request fails with `401:
Unauthorized` or `403: Forbidden`, the transport calls `Authorize` to
perform the authorization flow. If `Authorize` returns a non-nil error,
the request is retried once. `Authorize` errors do not result in
termination of the client session (unless they happen during
connection initialization), as some OAuth flows are multi-legged and it should be
acceptable to retry for example when the authorization grant was
received.

*Note:* There was already an `OAuthHandler` type defined as part of a
previous iteration of OAuth support. It was renamed to
`OAuthHandlerLegacy`. This is the only backwards incompatible API change
in the experimental client `auth` part (protected by the
`mcp_go_client_oauth` Go build tag). The cost of replacing previous
usages is deemed worthwhile to maintain clear naming, under the
assumption that the experimental client `auth` part was not widely used.

## `AuthorizationCodeHandler` (auth/authorization_code.go)

This is the `OAuthHandler` implementation that fulfills the [MCP
specification](https://modelcontextprotocol.io/specification/2025-11-25/basic/authorization).
In particular, in supports:

- Protected Resource Metadata discovery and fetching
- Authorization Server Metadata discovery and fetching
- Client registration
  - OpenID Connect metadata document
  - Pre-registration
  - Dynamic Client Registration
- PKCE
- `client_secret_post`, `client_secret_basic` token endpoint
auth methods
- Automatic refresh of tokens

### Authorization Server redirect

As part of the flow for the `authorization_code` grant type, the client
needs to point the user to the authorization URL, so that they confirm
the access request. This design proposes that it will be supported via a
pluggable dependency that will initiate this process in an
application-specific way:

```go
type AuthorizationCodeHandler struct {
	...

	// AuthorizationCodeFetcher is a required function called to initiate the authorization flow.
	// It is responsible for opening the URL in a browser for the user to start the authorization process.
	// It should return the authorization code and state once the Authorization Server
	// redirects back to the RedirectURL.
	AuthorizationCodeFetcher func(ctx context.Context, args *AuthorizationArgs) (*AuthorizationResult, error)

	...
}
```

The function is supposed perform any application specific logic to handle the redirect
from the Authorization Server and return the resulting code and state.

## `oauthex` changes

Some additional/adjusted building blocks that may be useful when
creating `OAuthHandler` implementations are present in the `oauthex`
package:

- `auth_meta.go`: Authorization Server Metadata utilities:
  - `GetAuthServerMeta`: get Authorization Server Metadata from a URL
- `dcr.go`: Dynamic Client Registration utilities (unchanged)
- `resource_meta.go`: Protected Resource Metadata utilities:
- `GetProtectedResourceMetadata`: get Protected Resource Metadata from a
URL
  - `ParseWWWAuthenticate` – as per name (unchanged)
- [deprecated] `GetProtectedResourceMetadataFromID` and
`GetProtectedResourceMetadataFromHeader` in favor of more generic
`GetProtectedResourceMetadata`. They will be kept under the Go build tag
and removed one version of the SDK in the future.
 2026-02-27 15:30:13 +01:00