finance-mcp

A focused remote Model Context Protocol (MCP) server for market data, designed for Cloudflare Workers and AI clients such as ChatGPT/Codex.

Tools

• stock_quote — latest / near-real-time quote metadata for up to 10 tickers
• price_history — OHLCV history with intraday and daily intervals
• option_chain — option expirations, calls, puts, IV, volume and open interest
• finance_news — company/ticker news search
• market_snapshot — S&P 500, Nasdaq Composite, Dow Jones and VIX snapshot

Data sources

The first release uses Yahoo Finance public/unofficial endpoints. Exchange and upstream rules determine actual latency. Treat quotes as near-real-time unless your upstream entitlement explicitly guarantees real-time data. Options data may be delayed; verify execution decisions against your broker/order book.

Local development

npm install
npm run dev

Health check:

http://localhost:8787/health

MCP endpoint:

http://localhost:8787/mcp

Deploy to Cloudflare Workers

npm install
npx wrangler login
npm run deploy

After deployment, Wrangler returns a Workers URL. Your remote MCP endpoint is:

https://<worker-name>.<account-subdomain>.workers.dev/mcp

Use /health to verify the Worker is reachable.

Connect an MCP client

Configure the remote MCP URL ending in /mcp. This project uses Streamable HTTP through Cloudflare's stateless MCP handler.

Example prompts

• Get AAPL and NVDA latest quotes.
• Show AAPL 5-day 5-minute price history.
• Get the nearest AAPL option chain and identify the highest-volume calls and puts.
• Find the latest Apple finance news.
• Give me a US market snapshot.

Roadmap

Next modules can add SEC filings, FRED macro data, institutional holdings, insider transactions, Cboe/OPRA-capable option feeds and broker-grade real-time market data providers.