LaunchEngine.dev MCP server

LaunchEngine.dev MCP server

Find public posts where someone is asking for a product like yours, while they are still choosing.

LaunchEngine.dev scans Reddit, Hacker News and the open web for posts that match your product, scores each one 1–100 for buying intent, and drafts a reply for you to edit and post. This server gives any MCP client (Claude, Cursor, VS Code, Cline, Windsurf) the same data as six tools.

Nothing is ever posted for you.

Quick start

starts with 100 credits, no card required.

1. Sign up at launchengine.dev. A new workspace

Dashboard → Agents. Keys look like lelive....

1. Create a project for your product, then an API key under

1. Add the server to your client (below), then ask it something.

Install

Every client runs the same command, npx -y @launchengine-dev/mcp, with your key in LAUNCHENGINEDEVAPI_KEY. Node 20 or newer is required.

Claude Desktop

Download the .mcpb bundle from the latest release and open it: Claude Desktop installs it and asks for the key.

Or add it by hand, in ~/Library/Application Support/Claude/claudedesktopconfig.json (macOS) or %APPDATA%\Claude\claudedesktopconfig.json (Windows):

{
  "mcpServers": {
    "launchengine": {
      "command": "npx",
      "args": ["-y", "@launchengine-dev/mcp"],
      "env": { "LAUNCHENGINE_DEV_API_KEY": "le_live_..." }
    }
  }
}

Claude Code

claude mcp add launchengine \
  --env LAUNCHENGINE_DEV_API_KEY=le_live_... \
  -- npx -y @launchengine-dev/mcp

Cursor, Cline and Windsurf

The same mcpServers block as Claude Desktop, in:

VS Code

.vscode/mcp.json uses servers rather than mcpServers, and can prompt for the key once and keep it out of the file:

{
  "inputs": [
    {
      "type": "promptString",
      "id": "launchengine-key",
      "description": "LaunchEngine.dev API key (le_live_...)",
      "password": true
    }
  ],
  "servers": {
    "launchengine": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "@launchengine-dev/mcp"],
      "env": { "LAUNCHENGINE_DEV_API_KEY": "${input:launchengine-key}" }
    }
  }
}

What to ask

• "List my LaunchEngine projects."
• "Find posts from the last 7 days scoring 80 or more for my project."
• "Scan live sources now, then show me the top five." (uses a daily scan)
• "Show me the full post for the top signal, then draft a technical reply."
• "Start monitoring the keyword 'alternative to Mixpanel' for this project."
• "How many credits do I have left?"

Tools

Every parameter is described in the tool schema your client receives. The full reference, generated from the same schemas, is at .

The tools carry MCP annotations, so a client can ask before the two that spend credits: neither is marked read-only, even though they only read posts.

Costs and limits

Shortened. The full README is on GitHub.