Narwhal for ChatGPT
com.narwhalapi/mcp
One API and MCP server for financial and economic data: markets, economics, companies and more.
client:ChatGPT
transport:streamable-http
Install Narwhal in ChatGPT
Settings → Connectors → Advanced → Developer mode
https://api.narwhalapi.com/mcpCustom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs