Mark III Labs

license

MIT(OSI)

source

public

core features withheld

no

The LICENSE is the standard MIT License, and the repository is public and unarchived. It ships the whole SDK - server, client, transports and OAuth support - with no separate paid tier or license-gated build described anywhere, so the core is ungated.

• https://api.github.com/repos/mark3labs/mcp-go recorded 2026-09-03

  Repo metadata - license spdx_id MIT, private false, archived false, default branch main - for mark3labs/mcp-go.

• https://raw.githubusercontent.com/mark3labs/mcp-go/main/LICENSE recorded 2026-10-07

  MIT License text, copyright (c) 2024 Anthropic, PBC.

• https://raw.githubusercontent.com/mark3labs/mcp-go/main/README.md recorded 2026-10-07

  README describes the whole SDK - server, resources, tools, prompts, task-augmented tools, transports (stdio, SSE, streamable HTTP) and OAuth Protected Resource Metadata - with no paid tier or license-gated build mentioned anywhere.

mcp-go ships as a Go module, and Go's module ecosystem publishes no download counts, so GitHub stars are the only comparable adoption signal here.

• https://api.github.com/repos/mark3labs/mcp-go recorded 2026-09-03

  Repo metadata - stargazers_count = 9,058 - for mark3labs/mcp-go.

MCP Go implements both roles, the full primitive set and all three transports, matching mcp-python-sdk. What is missing is confirmation of the optional features each role can add - sampling, roots and elicitation - and a specification target current with the latest release: its README covers 2025-11-25, one revision behind 2026-07-28.

• https://raw.githubusercontent.com/mark3labs/mcp-go/main/README.md recorded 2026-09-17

  The README's Transports section: "MCP-Go supports stdio, SSE and streamable-HTTP transport layers." Server and client construction, tools, resources and prompts all appear, along with task capabilities configured through `server.WithTaskCapabilities`.