fix(deps): update module github.com/modelcontextprotocol/go-sdk to v0.4.0 #47
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ChrisJBurns
approved these changes
Sep 6, 2025
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This PR contains the following updates:
v0.3.1->v0.4.0Release Notes
modelcontextprotocol/go-sdk (github.com/modelcontextprotocol/go-sdk)
v0.4.0Compare Source
This release fixes several bugs, and expands on OAuth support and examples. It also makes a few (hopefully minor) API changes as we approach a release candidate (see #328).
For more details, see the v0.4.0 milestone.
Thank you to all who tested the SDK, filed bugs, and contributed.
API Changes
This release includes the following incompatible changes:
mcp.CallToolRequestnow holds anmcp.CallToolParamsRaw, to avoid confusion about the raw state ofArguments(see proposal #377)mcp.ToolForis unexported, as it was also a footgun: modifying the resulting schema was ineffective (see proposal #401).auth.TokenVerifieris changed fromfunc(context.Context, string) (*TokenInfo, error)tofunc(context.Context, string, *net/http.Request) (*TokenInfo, error), to allow access to the HTTP request (see proposal #403).Additionally, it includes the following additions:
mcp.StreamableServerTransport.JSONResponseandmcp.StreamableHTTPOptions.JSONResponseare exported, to configure serving responses asapplication/jsonrather thantext/event-stream(#397).auth.ErrOAuthis added.New Examples
Several new examples are added to demonstrate different ways to use the SDK. We will continue to expand on these examples and other documentation as we approach the release.
Bug fixes
Several notable bugs or misbehaviors are addressed:
notifications/initializedis relaxed, to fix flaky initialization with Claude (#395).Mcp-Session-Idresponse headers are now sent only for theInitializerequest, per the spec (#416).New Contributors
Full Changelog: modelcontextprotocol/go-sdk@v0.3.1...v0.4.0
Configuration
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🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.
♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.
🔕 Ignore: Close this PR and you won't be reminded about this update again.
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