Sourced from github.com/mark3labs/mcp-go's releases.

Release v0.37.0

⚠️ 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:

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

New Contributors

• @​outofthisworld made their first contribution in mark3labs/mcp-go#524
• @​buraksenn made their first contribution in mark3labs/mcp-go#429
• @​andig made their first contribution in mark3labs/mcp-go#515
• @​okoshi-f made their first contribution in mark3labs/mcp-go#509
• @​caarlos0 made their first contribution in mark3labs/mcp-go#525

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

Release v0.36.0

What's Changed

• Add defs field to ToolsInputSchema by @​ostafen in mark3labs/mcp-go#488
• Remove sampling_server binary file by @​JeffreyCA in mark3labs/mcp-go#512
• chore: remove comments related to JSON-Batching by @​cryo-zd in mark3labs/mcp-go#514
• feat: support structured content and output schema by @​pottekkat in mark3labs/mcp-go#460
• Hide error log when it's not useful by @​dgageot in mark3labs/mcp-go#517

New Contributors

• @​ostafen made their first contribution in mark3labs/mcp-go#488
• @​JeffreyCA made their first contribution in mark3labs/mcp-go#512
• @​dgageot made their first contribution in mark3labs/mcp-go#517

Full Changelog: https://github.com/mark3labs/mcp-go/compare/v0.35.0...v0.36.0

Release v0.35.0

What's Changed

• Http headers by @​adityamj in mark3labs/mcp-go#480
• fix: check if resp is nil on error for initialize methods by @​pottekkat in mark3labs/mcp-go#492

... (truncated)

• 6da5cd1 feat: allow to set a custom logger in the SSE and STDIO clients (#525)
• 9259d32 feat: add thread-safe SetExpectedState for cross-request OAuth flows (#500)
• a63f10e Fix SSE transport not properly handling HTTP/2 NO_ERROR disconnections (#509)
• fda6b38 feat: implement sampling support for Streamable HTTP transport (#515)
• 6e5d6fd fix unmarshalling error for Meta property
• 57740b6 task: add _meta field to relevant types (#429)
• 96de112 Update server.go race condition (#524)
• 4cca302 Replace Prompts/Resources/Resource Templates (#518)
• cf35264 Merge pull request #517 from dgageot/remote-context-cancelled-log
• 8f9d538 feat: support structured content and output schema (#460)
• Additional commits viewable in compare view

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