MCP100 verdict
Recommended official MCP SDK for Go when you need direct, first-party protocol support for building MCP clients or servers.
MCP100 Assessment
Editorial verdict
Reviewed September 11, 2026
Task Fit
Mapped
Developer workflows
Trust
Reviewed
A dated editorial review is published on the MCP detail page.
Maintenance
Activity observed
A dated repository or package update is available; editorial maintenance review is still pending.
Popularity
Signals available
Visible usage signals are shown for discovery only, not as proof of safety.
Evidence scope
5.1k MCP repository stars
No MCP-specific package metric is stored
Repository identity: modelcontextprotocol/go-sdk
Stars observed September 24, 2026 · Downloads observation date unavailable
Exact reviewed repository identity; current GitHub repository stars are eligible as repository-level adoption evidence.
The official Go SDK is a Go module; this snapshot has no comparable package-download metric.
Publisher activity observed September 23, 2026
Current source snapshot
Source relationship: First-party MCP
Reviewed September 11, 2026
Evidence-backed setup
This profile has type-appropriate, source-backed setup rather than an MCP-server client connector configuration.
Type-appropriate, source-backed setup for this sdk profile.
Capability
Recommended official MCP SDK for Go when you need direct, first-party protocol support for building MCP clients or servers.
First-party Go protocol primitives for exposing MCP server capabilities.
First-party Go client primitives for connecting to MCP servers.
Use the current official SDK line for MCP negotiation, requests, notifications, and supported transports.
This is an SDK, not a fixed MCP server tool catalog.
Not measured yet
Estimated token footprint of the MCP tool schemas exposed to the agent.
Reviewed access
Review the exact access boundary before connecting this MCP to accounts, credentials, or sensitive data.
Related reviewed MCPs
Retrieve current library and framework documentation for coding agents.
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Discover and run MCP servers through Docker's MCP gateway.
Choose this instead if
Choose Docker MCP Gateway instead if running multiple MCP servers behind one stdio connection.
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Work with repositories, issues, pull requests, and GitHub workflows.
Choose this instead if
Choose GitHub MCP instead if repository, issue, pull-request, and code context.
Work with repositories, issues, pull requests, and GitHub workflows.
reviewed-detail:official-mcp-go-sdk is listed as First-party MCP in MCP100’s current evidence.
Current official resources:
Original product, capability, tool, and usage documentation from the MCP publisher. Installation sections appear under Install & Agents.
This repository contains an implementation of the official Go software development kit (SDK) for the Model Context Protocol (MCP).
The SDK consists of several importable packages:
github.com/modelcontextprotocol/go-sdk/mcp
package defines the primary APIs for constructing and using MCP clients and
servers.github.com/modelcontextprotocol/go-sdk/jsonrpc package is for users implementing
their own transports.github.com/modelcontextprotocol/go-sdk/auth
package provides some primitives for supporting OAuth.github.com/modelcontextprotocol/go-sdk/oauthex
package provides extensions to the OAuth protocol, such as ProtectedResourceMetadata.The SDK endeavors to implement the full MCP spec. The docs/ directory
contains feature documentation, mapping the MCP spec to the packages above.
The following table shows which versions of the Go SDK support which versions of the MCP specification:
| SDK Version | Latest MCP Spec | All Supported MCP Specs |
|---|---|---|
| v1.7.0+ | 2026-07-28 | 2026-07-28, 2025-11-25*, 2025-06-18, 2025-03-26, 2024-11-05 |
| v1.4.0 - v1.6.1 | 2025-11-25* | 2025-11-25*, 2025-06-18, 2025-03-26, 2024-11-05 |
| v1.2.0 - v1.3.1 | 2025-11-25** | 2025-11-25**, 2025-06-18, 2025-03-26, 2024-11-05 |
| v1.0.0 - v1.1.0 | 2025-06-18 | 2025-06-18, 2025-03-26, 2024-11-05 |
* Client side OAuth has experimental support.
** Partial support for 2025-11-25 (client side OAuth and Sampling with tools not available).
The roots, sampling, and logging features are deprecated as of protocol version 2026-07-28 by SEP-2577. The SDK continues to support them for compatibility during the deprecation window (at least twelve months). See the individual feature documentation for migration guidance.
New releases of the SDK target only supported versions of Go. See https://go.dev/doc/devel/release#policy for more information.
We welcome contributions to the SDK! Please see CONTRIBUTING.md for details of how to contribute.
Several third party Go MCP SDKs inspired the development and design of this official SDK, and continue to be viable alternatives, notably mcp-go, originally 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.
This project is licensed under Apache 2.0 for new contributions, with existing code under MIT - see the LICENSE file for details.