Factcheck MCP Server

An MCP Server for validating code or content against the official Model Context Protocol (MCP) specification to ensure technical accuracy and prevent the spread of misinformation.

People who need these tools inside Claude, Cursor, VS Code, or another MCP client. The project is written in Go.

VERIFIED ACTIVE

LAST COMMIT 2025-11-26 · ★ 3 · #841 OF 848 MAINTAINED OTHER · VERIFIED 2026-08-25

MIT · Go servers · how we verify → /methodology

01 · Install Factcheck

before you install - you'll need

OPENAI_API_KEY

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

Docker

docker run -i --rm ghcr.io/carlisia/mcp-factcheck:v1.0.0

Claude Desktop - add to config

{
  "mcpServers": {
    "carlisia-mcp-factcheck": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/carlisia/mcp-factcheck:v1.0.0"
      ]
    }
  }
}

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 container (OCI image) - can be sandboxed away from your filesystem

license MIT - declared in the repository

registry namespace io.github.carlisia is GitHub-verified and matches the repo owner

03 · What Factcheck can do

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

Latest releases

v1.0.0 · 2025-10-07

Add comprehensive list of tasks to run · Add enhanced debug interface with request grouping and improved visualizations · Add env · Add pre-generated spec chunks for all versions and embeddings data · Add prompt…

04 · Who maintains Factcheck

mcp-factcheck is maintained by carlisia. It's the only MCP server we track from this author; the repo dates to Jun 2025.

05 · Facts

repository: github.com/carlisia/mcp-factcheck
category: other - ranked #841 of 848 actively-maintained other servers as of 2026-08-25.
registry: io.github.carlisia/mcp-factcheck (active, first published 2025-10-07)
packages: oci:ghcr.io/carlisia/mcp-factcheck:v1.0.0

06 · Factcheck FAQ

What is Factcheck?

An MCP Server for validating code or content against the official Model Context Protocol (MCP) specification to ensure technical accuracy and prevent the spread of misinformation.

Is Factcheck still maintained?

Yes - as of 2026-08-25, its last commit was 2025-11-26. We re-verify nightly.

How do I install Factcheck?

Run `docker run -i --rm ghcr.io/carlisia/mcp-factcheck:v1.0.0`. The README documents one environment variable (OPENAI_API_KEY) to set first. You can also paste the ready-made client config above.

07 · Alternatives to Factcheck

Alternatives to Factcheck

Maintained other servers if Factcheck isn't the fit.

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