The Citadel for ChatGPT

com.thecitadelapp/citadel

Deterministic 6-dimension dating profile rubrics and readiness checks via Streamable HTTP MCP.

client:ChatGPT transport:streamable-http tools:3

Install The Citadel in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://thecitadelapp.com/api/mcp

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