Stock Market Data MCP for ChatGPT

io.github.foundrynet/market-data-mcp

Real-time stock quotes, history, options chains, sector performance & screening for agents.

client:ChatGPT transport:streamable-http

Install Stock Market Data MCP in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://market-data-mcp-production.up.railway.app/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs