Release v0.32.0

What's Changed

• feat(mcp): add NewToolResultErrorf by @icholy in #357
• feat(mcptest): extend test server with prompt and resource support by @vasayxtx in #346
• [streamable-http] Add ability to override the http.Client by @tra4less in #359
• fixed logo issue in home page by @asaf-shitrit in #364
• feat(mcptest): Change Server.Start to accept a context.Context. by @octo in #339
• fix(test/stdio): address io:read/write on closed pipe error by @cryo-zd in #360
• [SSE][OAuth] Add OAuth support to SSE client by @giridhar-murthy-glean in #340
• More comprehensive docs by @ezynda3 in #374
• fix(srv/stream): properly remove sessionTool to prevent memory leak by @cryo-zd in #365
• fix: SSE parser now correctly handles events without event field by @ezynda3 in #376
• fix: ignore session IDs in stateless mode instead of rejecting them by @ezynda3 in #375
• support search www doc by @dugenkui03 in #378
• Optimize docs by @dugenkui03 in #386

New Contributors

• @icholy made their first contribution in #357
• @vasayxtx made their first contribution in #346
• @tra4less made their first contribution in #359
• @asaf-shitrit made their first contribution in #364
• @giridhar-murthy-glean made their first contribution in #340

Full Changelog: v0.31.0...v0.32.0

Release v0.31.0

What's Changed

• [feat] separate request struct by @OswinWu in #333
• fix: logo on website is squashed by @corani in #349
• fix: panic when streamable HTTP server sends notification by @dugenkui03 in #348
• fix: move styles.css to www/docs by @corani in #354
• fix(server): resolve stdio server context cancellation bug by @sonirico in #331
• Add option to StreamableHTTPServer to allow custom http server instance by @yash025 in #347
• fix(Srv/stream): add ID field to PingRequest by @cryo-zd in #353

New Contributors

• @OswinWu made their first contribution in #333
• @corani made their first contribution in #349
• @sonirico made their first contribution in #331

Full Changelog: v0.30.1...v0.31.0

Release v0.30.1

What's Changed

• fix(server): Implement MCP version negotiation. by @octo in #341

Full Changelog: v0.30.0...v0.30.1

Release v0.30.0

What's Changed

• Feat: Impl Server-Side Streamable HTTP transport by @leavez in #273
• Support customize request header by @dugenkui03 in #315
• docs: add regeneration instructions by @pmenglund in #309
• docs(examples): correct use of GetArguments by @jamietanna in #316
• fix: avoid painc caused by writing to closed channel by @cryo-zd in #318
• docs: use helper functions and return error as result by @pottekkat in #322
• Update README.md by @dugenkui03 in #323
• Feat(prompts): add DeletePrompts method to MCPServer by @God-Jay in #320
• Scaffold documentation site by @ezynda3 in #324
• Docs by @ezynda3 in #325
• feat: Implement OAuth in the client by @ezynda3 in #296
• feat(server): persist client info in sessions by @ShawkyZ in #313

New Contributors

• @pmenglund made their first contribution in #309
• @jamietanna made their first contribution in #316
• @God-Jay made their first contribution in #320
• @ShawkyZ made their first contribution in #313

Full Changelog: v0.29.0...v0.30.0

Release v0.29.0

What's Changed

• refactor: make CallToolRequest.Arguments more flexible (Breaking Change) by @ezynda3 in #287
• Drop unused fields from server.sseSession by @ggoodman in #303
• chore: remove unused variables and type arguments by @pottekkat in #302
• chore(Srv/stdio): duplicated setting of ErrorLogger by @cryo-zd in #306
• fix: handle the situation where the channel is closed by @button-chen in #304

Breaking Changes

In v0.29.0, MCP-Go introduces breaking changes to tool request handling. The main change is that request.Params.Arguments is no longer directly accessible as a map. Instead, you must use the new GetArguments() method to retrieve arguments as a map. For type-safe argument access, new helper methods like RequireString(), RequireFloat(), and RequireBool() have been added. To migrate:

1. Replace direct access to request.Params.Arguments["key"] with request.GetArguments()["key"]
2. For better type safety, use the new helper methods: request.RequireString("key"), request.RequireFloat("key"), etc.
3. For complex argument structures, use the new BindArguments() method with a struct, or try the new typed tool handlers with mcp.NewTypedToolHandler() as shown in the new examples/typed_tools example.

New Contributors

• @ggoodman made their first contribution in #303
• @button-chen made their first contribution in #304

Full Changelog: v0.28.0...v0.29.0

Release v0.28.0

What's Changed

• feat(tools): implicitly register capabilities by @david-hamilton-glean in #292
• fix: Gate notifications on capabilities by @david-hamilton-glean in #290
• feat(protocol): allow additional fields in meta by @anuraaga in #293
• fix: type mismatch for request/response ID by @pottekkat in #291
• feat(MCPServer): support logging/setlevel request by @cryo-zd in #276

New Contributors

• @anuraaga made their first contribution in #293

Full Changelog: v0.27.1...v0.28.0

Release v0.27.1

What's Changed

• docs: add CONTRIBUTING.md by @pottekkat in #275
• chore: create CODE_OF_CONDUCT.md by @pottekkat in #274
• chore: add issue and pull request templates by @pottekkat in #281
• ci: add golangci-lint by @pottekkat in #282
• fix: proper deprecation messaging for WithHTTPContextFunc by @aotarola in #278
• chore: add a security policy by @pottekkat in #283
• fix(docs): Update README link by @david-hamilton-glean in #284
• fix(session): Don't send tool changed notifications if session not initialized yet by @david-hamilton-glean in #289

New Contributors

• @aotarola made their first contribution in #278
• @david-hamilton-glean made their first contribution in #284

Full Changelog: v0.27.0...v0.27.1

Release v0.27.0

What's Changed

• Support audio content type in tools/call and prompts/get by @dugenkui03 in #250
• refactor(server): extract common HTTP transport configuration options by @robert-jackson-glean in #253
• ci: add check to verify generated code is up-to-date by @robert-jackson-glean in #258
• fix(MCPServer): correct notification method in func RemoveResource() by @cryo-zd in #262
• Create sample client by @ezynda3 in #265
• Fix the issue where the 'Shutdown' method fails to properly exit. by @uppercaveman in #255
• test(server): reliably detect Start/Shutdown deadlock in SSEServer by @robert-jackson-glean in #264
• docs: make code examples in the README correct as per spec by @pottekkat in #268
• feat(MCPServer): avoid unnecessary notifications when Resource/Tool not exists by @cryo-zd in #266
• chore: replace interface{} with any by @pottekkat in #261
• fix(Srv/stdio): risk of goroutine leaks and concurrent reads in readNextLine() by @cryo-zd in #257
• docs: Remove reference to mcp.RoleSystem by @robert-jackson-glean in #269
• fix: fix some obvious simplifications by @pottekkat in #267
• Optimization of listByPagination Performance by @qiangmzsx in #246
• fix: properly marshal ToolAnnotations with false values by @pottekkat in #260

New Contributors

• @uppercaveman made their first contribution in #255
• @pottekkat made their first contribution in #268
• @qiangmzsx made their first contribution in #246

Full Changelog: v0.26.0...v0.27.0

Release v0.26.0

What's Changed

• feat(sse): Add SessionWithTools support to SSEServer by @robert-jackson-glean in #232
• Fix bug with MarshalJSON for NotificationParams by @Gelembjuk in #233
• fix: write back error message if the response marshal failed by @ppzqh in #235
• fix(server/sse): potential goroutine leak in Heartbeat sender by @cryo-zd in #236
• Fix stdio test compilation issues in CI by @ezynda3 in #240
• refactor(server/sse): rename WithBasePath to WithStaticBasePath by @robert-jackson-glean in #238
• fix(MCPServer): Session tool handler not used due to variable shadowing by @cryo-zd in #242
• test: build mockstdio_server with isolated cache to prevent flaky CI by @robert-jackson-glean in #241
• fix: Use detached context for SSE message handling by @yash025 in #244

New Contributors

• @Gelembjuk made their first contribution in #233
• @ppzqh made their first contribution in #235
• @yash025 made their first contribution in #244

Full Changelog: v0.25.0...v0.26.0

Release v0.25.0

What's Changed

• update doc comments to match Go conventions by @yinebebt in #226
• fix: Add Accept Header in StreamableHTTP Client by @hhxiao in #230
• fix(SSE): only initialize http.Server when not set by @cryo-zd in #229
• fix: Prevent panic in parsing functions for null results by @cocovs in #218
• [SSEClient] Add ability to override the http.Client by @sks in #109
• feat(SSEServer): add WithAppendQueryToMessageEndpoint() by @liut in #136
• feat: quick return tool-call request, send response via SSE in goroutine by @CeerDecy in #163
• feat(server/sse): Add support for dynamic base paths by @robert-jackson-glean in #214

New Contributors

• @yinebebt made their first contribution in #226
• @hhxiao made their first contribution in #230
• @cocovs made their first contribution in #218
• @sks made their first contribution in #109
• @liut made their first contribution in #136
• @CeerDecy made their first contribution in #163

Full Changelog: v0.24.1...v0.25.0