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

Release v0.39.1

What's Changed

• fix(tool): Do not return empty outputSchema by @​alex210501 in mark3labs/mcp-go#573

Full Changelog: https://github.com/mark3labs/mcp-go/compare/v0.39.0...v0.39.1

Release v0.39.0

What's Changed

• fix: use bufio.Scanner for stdio transport to avoid panic when stdio mcp server outputs a long line by @​WingT in mark3labs/mcp-go#464
• fix(tool): Return the OutputSchema from the tool definition by @​alex210501 in mark3labs/mcp-go#571
• feat: add resource handler middleware capability by @​tjhop in mark3labs/mcp-go#569
• feat: add tls support for streamable-http by @​opencow in mark3labs/mcp-go#568
• fix: prevent double-starting stdio transport in client by @​linw1995 in mark3labs/mcp-go#564
• docs(client): improve server reliability and error handling by @​appleboy in mark3labs/mcp-go#560
• oauth client example: skip DCR if MCP_CLIENT_ID is set by @​djoreilly in mark3labs/mcp-go#549

New Contributors

• @​WingT made their first contribution in mark3labs/mcp-go#464
• @​alex210501 made their first contribution in mark3labs/mcp-go#571
• @​tjhop made their first contribution in mark3labs/mcp-go#569
• @​opencow made their first contribution in mark3labs/mcp-go#568
• @​linw1995 made their first contribution in mark3labs/mcp-go#564
• @​appleboy made their first contribution in mark3labs/mcp-go#560
• @​djoreilly made their first contribution in mark3labs/mcp-go#549

Full Changelog: https://github.com/mark3labs/mcp-go/compare/v0.38.0...v0.39.0

Release v0.38.0

What's Changed

• fix: resolve stdio transport race condition for concurrent tool calls by @​ezynda3 in mark3labs/mcp-go#529
• fix CallToolResult json marshaling and unmarshaling: need structuredC… by @​sunfuze in mark3labs/mcp-go#523
• feat: refactor constants for resource content types by @​CocaineCong in mark3labs/mcp-go#489
• feat: add missing SetPrompts, DeleteResources, and SetResources methods by @​vasayxtx in mark3labs/mcp-go#445
• feat: support creating tools using go-struct-style input schema by @​Grivn in mark3labs/mcp-go#534
• fix: remove duplicate methods server.SetPrompts & server.SetResources by @​matthisholleville in mark3labs/mcp-go#542

New Contributors

• @​sunfuze made their first contribution in mark3labs/mcp-go#523
• @​Grivn made their first contribution in mark3labs/mcp-go#534
• @​matthisholleville made their first contribution in mark3labs/mcp-go#542

Full Changelog: https://github.com/mark3labs/mcp-go/compare/v0.37.0...v0.38.0

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:

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• 3d1bfca fix(tool): Do not return empty outputSchema (#573)
• 35fc389 Format
• 5298f64 oauth client example: skip DCR if MCP_CLIENT_ID is set (#549)
• 004ca9e docs(client): improve server reliability and error handling (#560)
• d2f81b6 fix: prevent double-starting stdio transport in client (#564)
• 40ce109 feat: add tls support for streamable-http (#568)
• ef80a50 feat: add resource handler middleware capability (#569)
• b924391 fix(tool): Return the OutputSchema from the tool definition (#571)
• 4e353ac fix: use bufio.Scanner for stdio transport to avoid panic when stdio mcp serv...
• 35ebaa5 Add releases notification
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