CEF Radar for ChatGPT

com.cefradar/cefradar

U.S. closed-end funds from SEC filings: activist stakes, tender offers, votes, costs, holdings.

client:ChatGPT transport:streamable-http tools:9

Install CEF Radar in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://cefradar.com/mcp

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