Sieve MCP Server

From company name to investment decision. Sieve scores startups across 7 dimensions so you know who's worth a meeting.

An MCP server that brings AI-powered startup due diligence into Claude, Cursor, Windsurf, and any MCP-compatible assistant. Screen any startup, get a quantified Sieve Score (0-140), and a clear Take Meeting / Pass recommendation.

Quick Start

Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "sieve": {
      "command": "uvx",
      "args": ["sieve-mcp"],
      "env": {
        "SIEVE_API_KEY": "your-api-key"
      }
    }
  }
}

Claude Code

claude mcp add sieve -- uvx sieve-mcp

Then set your API key in the environment:

export SIEVE_API_KEY="your-api-key"

Cursor / Windsurf

Add to your MCP settings:

{
  "mcpServers": {
    "sieve": {
      "command": "uvx",
      "args": ["sieve-mcp"],
      "env": {
        "SIEVE_API_KEY": "your-api-key"
      }
    }
  }
}

Environment Variables

Variable	Required	Default	Description
`SIEVE_API_KEY`	Yes	—	Your Sieve API key. Get one at app.sieve.arceusxventures.com/settings
`SIEVE_API_URL`	No	`https://api.sieve.arceusxventures.com`	API base URL (override for self-hosted)

Available Tools

Tool	Description	Read-only
`sieve_screen`	Run a Quick Screen on a startup	No
`sieve_status`	Check analysis progress	Yes
`sieve_summary`	Get full results of a completed analysis	Yes
`sieve_usage`	Check API usage for current billing period	Yes

Example Usage

A typical workflow in any MCP-compatible AI assistant:

Screen a startup:

"Run a Sieve screen on Acme Corp at acme.com"
Poll for progress (analysis takes 2-5 minutes):

"Check the status of that Sieve analysis"
Get results:

"Show me the Sieve summary for that analysis"
Check usage:

"How many Sieve screens do I have left this month?"

Running with Docker

docker build -t sieve-mcp .
docker run -p 8080:8080 -e SIEVE_API_KEY=your-key sieve-mcp

Development

# Install locally
pip install -e .

# Run in stdio mode (for MCP clients)
sieve-mcp

# Run in HTTP mode (for remote/container deployment)
sieve-mcp http

License

MIT

sieve-mcp

Quick Install