Download Latest Version
Release v0.32.0 source code.tar.gz (353.7 kB)
Get an email when there's a new version of MCP Go
| Name | Modified | Size | Downloads / Week |
|---|---|---|---|
| Parent folder | |||
| README.md | 2025-05-20 | 1.8 kB | |
| Release v0.29.0 source code.tar.gz | 2025-05-20 | 166.5 kB | |
| Release v0.29.0 source code.zip | 2025-05-20 | 204.3 kB | |
| Totals: 3 Items | 372.5 kB | 0 | |
What's Changed
- refactor: make CallToolRequest.Arguments more flexible (Breaking Change) by @ezynda3 in https://github.com/mark3labs/mcp-go/pull/287
- Drop unused fields from server.sseSession by @ggoodman in https://github.com/mark3labs/mcp-go/pull/303
- chore: remove unused variables and type arguments by @pottekkat in https://github.com/mark3labs/mcp-go/pull/302
- chore(Srv/stdio): duplicated setting of ErrorLogger by @cryo-zd in https://github.com/mark3labs/mcp-go/pull/306
- fix: handle the situation where the channel is closed by @button-chen in https://github.com/mark3labs/mcp-go/pull/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 https://github.com/mark3labs/mcp-go/pull/303
- @button-chen made their first contribution in https://github.com/mark3labs/mcp-go/pull/304
Full Changelog: https://github.com/mark3labs/mcp-go/compare/v0.28.0...v0.29.0