MCP Server

The Frontrun MCP server gives AI agents native access to the Frontrun API. 36 tools, version 2.6.0.

Claude (claude.ai and Claude Desktop): custom connector

The fastest way to connect. No install, no key handling:

1. Open Claude → Settings → Connectors → Add custom connector
2. Paste the server URL:

https://mcp.frontrun.vc

3. Claude opens a Frontrun login window. Sign in, click Connect, done.

Behind the scenes this uses OAuth: Claude gets your personal MCP key, which you can revoke anytime at frontrun.vc → Settings → API Keys. Requires an active Pro subscription or trial.

For terminal and IDE clients (Claude Code, Cursor), everything below runs via npx.

Setup

Option A: OAuth login (recommended)

No API key needed. Log in with your frontrun.vc account directly:

# Step 1: Log in - opens browser to frontrun.vc, saves credentials locally
npx frontrun-mcp-server --login
 
# Step 2: Auto-configure your client
npx frontrun-mcp-server --setup         # Claude Desktop
npx frontrun-mcp-server --setup-code    # Claude Code (uses `claude mcp add`)

Credentials are saved to ~/.frontrun/credentials.json.

npx frontrun-mcp-server --status   # Check auth status
npx frontrun-mcp-server --logout   # Clear saved credentials

Option B: Manual API key

Go to frontrun.vc (opens in a new tab) → Settings → API Keys and create a key (starts with sig_). Then configure your client below.

Claude Code

If you used --setup-code above, you're done. Otherwise, run:

claude mcp add frontrun -e FRONTRUN_API_KEY=your_api_key --scope user -- npx frontrun-mcp-server

The --scope user flag makes it available in every project. Verify with claude mcp list.

Claude Desktop

If you used --setup above, you're done. Otherwise, add to your config file:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "frontrun": {
      "command": "npx",
      "args": ["frontrun-mcp-server"],
      "env": {
        "FRONTRUN_API_KEY": "your_api_key"
      }
    }
  }
}

Restart Claude Desktop. The Frontrun tools will appear automatically.

Cursor

Add to .cursor/mcp.json in your project root:

{
  "mcpServers": {
    "frontrun": {
      "command": "npx",
      "args": ["frontrun-mcp-server"],
      "env": {
        "FRONTRUN_API_KEY": "your_api_key"
      }
    }
  }
}

Python

import subprocess, json
 
process = subprocess.Popen(
    ["npx", "frontrun-mcp-server"],
    stdin=subprocess.PIPE,
    stdout=subprocess.PIPE,
    env={"FRONTRUN_API_KEY": "your_api_key", "PATH": "/usr/local/bin:/usr/bin"}
)

JavaScript

import { Client } from "@modelcontextprotocol/sdk/client/index.js";
import { StdioClientTransport } from "@modelcontextprotocol/sdk/client/stdio.js";
 
const transport = new StdioClientTransport({
  command: "npx",
  args: ["frontrun-mcp-server"],
  env: { FRONTRUN_API_KEY: "your_api_key" },
});
 
const client = new Client({ name: "my-app", version: "1.0.0" });
await client.connect(transport);

Available tools (36)

No API key required

Tracking

Signals

Company intelligence

VC intelligence

Classification

Webhooks

Example prompts

Once connected, ask your agent:

• "What are the trending companies this week?"
• "Show me convergence signals with threshold 3 in the last 14 days"
• "What new accounts did pmarca follow in the last 48 hours?"
• "Search for AI startups in the follow graph"
• "Track @sequoia"
• "Tag @openai as a competitor with sector AI"

Troubleshooting

"FRONTRUN_API_KEY environment variable is required" Your API key isn't set. Double-check the key in your config or command.

"Invalid API key" The key is wrong or inactive. Generate a new one at frontrun.vc → Settings → API Keys.

npx command not found Install Node.js 18+ from nodejs.org (opens in a new tab).

Compatible clients

Any MCP-compatible client works:

• Claude Code (CLI)
• Claude Desktop
• Cursor
• Windsurf
• Continue
• Custom MCP clients

Source code

The MCP server is open source: github.com/jongall45/frontrun-mcp-server (opens in a new tab)