Preflight for ChatGPT

com.allthepossibles/preflight

Scans an MCP server for security gaps before your agent connects. Free tier, no signup.

client:ChatGPT transport:streamable-http tools:4

Install Preflight in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://preflight.allthepossibles.com/mcp

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