heade.rs for ChatGPT

rs.heade/lookup

Look up any domain, IP address or AS number: hosting, DNS, registration, email, TLS and headers.

client:ChatGPT transport:streamable-http tools:1

Install heade.rs in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://heade.rs/mcp

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