Arc Research for ChatGPT

com.getarcresearch/arc-research

Commodities research MCP: knowledge graph, COT, NG storage/weather, quotes, and stories.

client:ChatGPT transport:streamable-http

Install Arc Research in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://www.getarcresearch.com/mcp

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