MCP Go Files

⚠️ Breaking Changes

The Result.Meta field type has changed from map[string]any to *Meta. Code that directly accesses or sets this field will need to be updated:

```go // Before (v0.36.0 and earlier): result.Meta = map[string]any{"key": "value"}

// After (v0.37.0): result.Meta = &mcp.Meta{AdditionalFields: map[string]any{"key": "value"}} ```

What's Changed

• Replace Prompts/Resources/Resource Templates by @dgageot in https://github.com/mark3labs/mcp-go/pull/518
• Update server.go race condition by @outofthisworld in https://github.com/mark3labs/mcp-go/pull/524
• task: add _meta field to relevant types as defined in MCP specification by @buraksenn in https://github.com/mark3labs/mcp-go/pull/429
• feat: implement sampling support for Streamable HTTP transport by @andig in https://github.com/mark3labs/mcp-go/pull/515
• Fix SSE transport not properly handling HTTP/2 NO_ERROR disconnections by @okoshi-f in https://github.com/mark3labs/mcp-go/pull/509
• feat: add thread-safe SetExpectedState for cross-request OAuth flows by @sd2k in https://github.com/mark3labs/mcp-go/pull/500
• feat: allow to set a custom logger in the SSE and STDIO clients by @caarlos0 in https://github.com/mark3labs/mcp-go/pull/525

New Contributors

• @outofthisworld made their first contribution in https://github.com/mark3labs/mcp-go/pull/524
• @buraksenn made their first contribution in https://github.com/mark3labs/mcp-go/pull/429
• @andig made their first contribution in https://github.com/mark3labs/mcp-go/pull/515
• @okoshi-f made their first contribution in https://github.com/mark3labs/mcp-go/pull/509
• @caarlos0 made their first contribution in https://github.com/mark3labs/mcp-go/pull/525

Full Changelog: https://github.com/mark3labs/mcp-go/compare/v0.36.0...v0.37.0