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go-sdk/internal/readme/README.src.md
Rob Findley b3d45d4b53
 README: remove toc, update target date 
Update the README to remove the table of contents, and update the target
stability date from 'mid July' to 'August': mid July does not allow
enough time for testing.
2025-06-23 17:58:00 +00:00

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MCP Go SDK

PkgGoDev

This repository contains an implementation of the official Go software development kit (SDK) for the Model Context Protocol (MCP).

WARNING: The SDK is currently unstable and subject to breaking changes. Please test it out and file bug reports or API proposals. The TODO section below outlines outstanding release blockers. We aim to release a stable version of the SDK in August, 2025.

Package documentation

The SDK consists of two importable packages:

Example

In this example, an MCP client communicates with an MCP server running in a sidecar process:

%include client/client.go -

Here's an example of the corresponding server component, which communicates with its client over stdin/stdout:

%include server/server.go -

The examples/ directory contains more example clients and servers.

TODO

The following TODOs block the release of this SDK:

  • Better support for resumability in the Streamable HTTP transport: a server-side event store and client-side retry configuration.
  • OAuth support (or examples of implementing OAuth using middleware).
  • Support for the changes in the 2025-06-18 version of the MCP spec.
  • More examples and documentation.

Design

The design doc for this SDK is at design.md, which was initially reviewed at modelcontextprotocol/discussions/364.

Further design discussion should occur in GitHub issues. See CONTRIBUTING.md for details.

Acknowledgements

Several existing Go MCP SDKs inspired the development and design of this official SDK, notably mcp-go, authored by Ed Zynda. We are grateful to Ed as well as the other contributors to mcp-go, and to authors and contributors of other SDKs such as mcp-golang and go-mcp. Thanks to their work, there is a thriving ecosystem of Go MCP clients and servers.

License

This project is licensed under the MIT License - see the LICENSE file for details.