GMCA Certainty Matrix MCP

An official MCP server by GMCA that integrates their Certainty Matrix tool into AI assistants. It allows users to screen projects before investment by answering 11 specific questions. The server calculates the result directly, rather than relying on the language model, ensuring consistent evaluation for investment decisions.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-18Operated by GMCA

MCP endpoint (Streamable HTTP)

https://validate.gmca.be/mcp

Vendor documentation

What you can do with it

Screen projects before investment
Answer 11 certainty matrix questions
Calculate project viability results

Tools advertised by the last live check:

get_validate_questions
explain_validate_question
submit_validate_answers

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http gmca-certainty-matrix-mcp https://validate.gmca.be/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add gmca-certainty-matrix-mcp --url https://validate.gmca.be/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable gmca-certainty-matrix-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "gmca-certainty-matrix-mcp": {
      "url": "https://validate.gmca.be/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "gmca-certainty-matrix-mcp": {
      "type": "streamableHttp",
      "url": "https://validate.gmca.be/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start gmca-certainty-matrix-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "gmca-certainty-matrix-mcp": {
      "type": "http",
      "url": "https://validate.gmca.be/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http gmca-certainty-matrix-mcp https://validate.gmca.be/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "gmca-certainty-matrix-mcp": {
      "url": "https://validate.gmca.be/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "gmca-certainty-matrix-mcp": {
      "serverUrl": "https://validate.gmca.be/mcp"
    }
  }
}

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