SignupBouncer for ChatGPT

com.signupbouncer/checker

An API that checks new signups for disposable emails and repeat accounts.

client:ChatGPT transport:streamable-http tools:4

Install SignupBouncer in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://signupbouncer.com/mcp

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