Alpaca MCP Server

Expose Alpaca Market Data & Broker API as MCP tools.

Installation

npm install alpaca-mcp

Local Development

git clone <repo-url>
cd alpaca-mcp
npm install

Environment Variables

Create a .env at project root with:

ALPACA_ENDPOINT=https://data.alpaca.markets
ALPACA_BROKER_ENDPOINT=https://broker-api.alpaca.markets
ALPACA_API_KEY=YOUR_ALPACA_API_KEY
ALPACA_SECRET_KEY=YOUR_ALPACA_SECRET_KEY

Commands

start (dev): npm start (runs npx tsx index.ts)
build: npm run build (compiles to dist/)
run compiled: node dist/index.js

Usage

Once running, the MCP server listens on stdin/stdout. Use any MCP client or the CLI:

npm link      # optional
alpaca-mcp    # starts server globally

Available Tools

get-assets { assetClass?: "us_equity" | "crypto" }
get-stock-bars { symbols: string[]; start: string; end: string; timeframe: string }
get-market-days { start: string; end: string }
get-news { start: string; end: string; symbols: string[] }

Each returns JSON in content[0].text or an error.

MCP Client Configuration

To integrate via mcp.config.json, add the following under the mcpServers key:

{
  "mcpServers": {
    "alpaca-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "alpaca-mcp"
      ],
      "env": {
        "ALPACA_ENDPOINT": "https://data.alpaca.markets",
        "ALPACA_BROKER_ENDPOINT": "https://broker-api.alpaca.markets",
        "ALPACA_API_KEY": "<YOUR_API_KEY>",
        "ALPACA_SECRET_KEY": "<YOUR_SECRET_KEY>"
      }
    }
  }
}

## Publishing

```bash
npm publish

License

ISC

Install Server

HTTP connection URL

security – no known vulnerabilities

license - not found

quality - confirmed to work

How are these scores calculated?

remote-capable server

The server can be hosted and run remotely because it primarily relies on remote services or has no dependency on the local environment.

Tools

MCP server that exposes Alpaca Market Data & Broker API as tools, enabling access to financial data like stock bars, assets, market days, and news through the Message Control Protocol.

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