regfish for ChatGPT

com.regfish/mcp

Domains, DNS, DNSSEC and hosting at regfish; diagnose any domain; OAuth or API key.

client:ChatGPT transport:streamable-http

Install regfish in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://api.regfish.com/mcp

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