LocalFree server, account needed

Sieve MCP server

lmwharton/sieve-mcp

Startup due diligence: screens startups across IMPACT-X dimensions and returns a Sieve Score, evidence-typed findings and a meeting recommendation.

5 GitHub stars
Source code

Install Sieve in Claude Code

Claude Code
claude mcp add lmwharton-sieve -e SIEVE_API_KEY=... -- uvx sieve-mcp
mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)
{
  "mcpServers": {
    "lmwharton-sieve": {
      "command": "uvx",
      "args": [
        "sieve-mcp"
      ],
      "env": {
        "SIEVE_API_KEY": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the Sieve MCP server do?

Startup due diligence: screens startups across IMPACT-X dimensions and returns a Sieve Score, evidence-typed findings and a meeting recommendation.

Is the Sieve 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 Sieve run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Sieve to Claude Code?

Run: claude mcp add lmwharton-sieve -e SIEVE_API_KEY=... -- uvx sieve-mcp

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