RemoteFree server, account needed

Lenz Fact-Check MCP server

Checks the factual claims in a text against independent sources: a quick verdict, or a deep check with sources.

Website

Install Lenz Fact-Check in Claude Code

Claude Code
claude mcp add --transport http lenz-fact-check https://lenz.io/mcp
mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)
{
  "mcpServers": {
    "lenz-fact-check": {
      "url": "https://lenz.io/mcp"
    }
  }
}

Your client opens a browser window to sign in on first use.

Frequently asked questions

What does the Lenz Fact-Check MCP server do?

Checks the factual claims in a text against independent sources: a quick verdict, or a deep check with sources.

Is the Lenz Fact-Check MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Lenz Fact-Check run locally or remotely?

Remote. Hosted by the provider. You connect with a URL, nothing to install.

How do I add Lenz Fact-Check to Claude Code?

Run: claude mcp add --transport http lenz-fact-check https://lenz.io/mcp

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