Groundtruth MCP Server

██████╗ ████████╗ ███╗ ███╗ ██████╗ ██████╗ ██╔════╝ ╚══██╔══╝ ████╗ ████║ ██╔════╝ ██╔══██╗ ██║ ███╗ ██║ ██╔████╔██║ ██║ ██████╔╝ ██║ ██║ ██║ ██║╚██╔╝██║ ██║ ██╔═══╝ ╚██████╔╝ ██║ ██║ ╚═╝ ██║ ╚██████╗ ██║. It runs locally over stdio via the published package.

People connecting documentation tools to Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-08-05 · ★ 5 · #53 OF 183 MAINTAINED DOCUMENTATION · VERIFIED 2026-08-25

NOASSERTION · TypeScript servers · how we verify → /methodology

01 · Install Groundtruth

before you install - you'll need

GT_GITHUB_TOKEN

Environment variables documented in the project's README - it lists which are required and which have defaults.

Claude Code

claude mcp add rm-rf-prod-groundtruth-mcp -- npx -y @groundtruth-mcp/gt-mcp

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "rm-rf-prod-groundtruth-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@groundtruth-mcp/gt-mcp"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license no standard license detected - usage rights unclear; check the repo before commercial use

npm package @groundtruth-mcp/gt-mcp - the @groundtruth-mcp scope differs from the repo owner (rm-rf-prod); confirm it's the project's official package

registry namespace io.github.rm-rf-prod is GitHub-verified and matches the repo owner

03 · What Groundtruth can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v7.5.0 · 2026-08-05

The largest quality release so far: a 153-library registry expansion, a retrieval · fix that repaired thousands of dead documentation URLs, and a full split of the · codebase into single-responsibility modules. No…

v7.4.1 · 2026-07-29

scope publish audit gate to production dependencies · apply same production-scoped audit gate to Security workflow · repair CI audit gate and dead Effect doc URLs · bump MCP SDK to 1.30 and dev toolchain

v7.4.0 · 2026-07-15

adversarially verified hardening across all 14 tools · expand 7.3.0 changelog entry

04 · Who maintains Groundtruth

groundtruth is maintained by rm-rf-prod. It's the only MCP server we track from this author; the repo dates to Mar 2026.

05 · Facts

repository: github.com/rm-rf-prod/groundtruth-mcp
category: documentation - ranked #53 of 183 actively-maintained documentation servers as of 2026-08-25.
release cadence: 10+ releases in the last 90 days (latest 2026-08-05)
registry: io.github.rm-rf-prod/groundtruth (active, first published 2026-03-21 · 33 versions)
packages: npm:@groundtruth-mcp/gt-mcp

06 · Groundtruth FAQ

What is Groundtruth?

Is Groundtruth still maintained?

Yes - as of 2026-08-25, its last commit was 2026-08-05 and it shipped 10+ releases in the last 90 days. We re-verify nightly.

How do I install Groundtruth?

Run `npx -y @groundtruth-mcp/gt-mcp`. The README documents one environment variable (GT_GITHUB_TOKEN) to set first. You can also paste the ready-made client config above.

Does Groundtruth run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Groundtruth

Alternatives to Groundtruth

Maintained documentation servers if Groundtruth isn't the fit.

Pairs well with

Servers that cover what Groundtruth doesn't - only shown when the pairing reason fits the companion.

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