PREFLIGHT — URL Routing for AI Agents for ChatGPT

io.github.gsterlingpress/preflight

Choose HTTP, browser, machine endpoint, or avoid before an agent visits an unfamiliar URL.

client:ChatGPT transport:streamable-http tools:2

Install PREFLIGHT — URL Routing for AI Agents in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://preflight-api-production-01a2.up.railway.app/mcp

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