General Index for ChatGPT

com.general-index/gx-mcp

Commodity price indices, forward curves and catalog search. Requires a General Index account.

client:ChatGPT transport:streamable-http

Install General Index in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://mcp.g-x.co/mcp

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