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Ground Truth MCP Server

@anish632

Repository

Basic information

Category

Other

Transports

stdio

Author

anish632

Submitted by

anish632

About Ground Truth MCP Server

Validate AI claims against live data: check endpoints, count competitors, test hypotheses.

#validation#api#npm#x402#paid

Ground Truth MCP Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "ground-truth": {
      "url": "https://ground-truth-mcp.anishdasmail.workers.dev/mcp",
      "transport": "streamable-http"
    }
  }
}

Ground Truth MCP Server tools

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Overview

What is Ground Truth?

Ground Truth is an MCP server that lets AI agents fact-check their own research in real time. It probes endpoints, counts competitors from live registries, and tests hypotheses against live data so agents stop guessing and start verifying.

How to use Ground Truth?

Connect any MCP client to the URL https://ground-truth-mcp.anishdasmail.workers.dev/mcp via Streamable HTTP transport. For quick testing, use MCP Inspector (npx @modelcontextprotocol/inspector@latest), or add a ground-truth entry to your Claude Desktop configuration.

Key features of Ground Truth

  • Probes URLs and API endpoints for accessibility and structure
  • Counts packages on npm and PyPI to gauge competition
  • Tests factual claims with pass/fail verdicts against live checks
  • Returns response time, auth requirements, and rate-limit headers
  • Summarizes response content (e.g., structural summary of APIs)

Use cases of Ground Truth

  • An agent verifying whether an API it plans to recommend is actually reachable
  • Counting existing packages before claiming “competition is low”
  • Testing a factual assertion (e.g., “no one has built this”) against multiple registries

Frequently asked questions

1

What is Ground Truth and what problem does it solve?

It validates AI claims against live data. The tool was created after an AI agent gave bad advice and then built a prototype to test its own claims — discovering several were wrong.

2

How do I connect to the Ground Truth MCP server?

You can use MCP Inspector by running `npx @modelcontextprotocol/inspector@latest` and entering the server URL. For Claude Desktop, add a `"ground-truth"` entry with `"url"` set to `https://ground-truth-mcp.anishdasmail.workers.dev/mcp` in your `claude_desktop_config.json`.

3

What tools does Ground Truth provide?

Three tools: `check_endpoint` (probe a URL/API), `estimate_market` (count packages on npm or PyPI), and `test_hypothesis` (run a factual claim against multiple live checks and return a verdict).

4

What claims did Ground Truth catch on its first run?

It found that “Memory MCP server competition is Medium” was actually medium but actively growing, that email/SMS MCP servers already had existing packages, that the business verification MCP space was empty, and that OpenCorporates’ API was unreachable.

Comments

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