SubDupes for ChatGPT

com.subdupes/subdupes

Send the subscriptions Claude or ChatGPT finds in your email to SubDupes. You approve each one.

client:ChatGPT transport:streamable-http

Install SubDupes in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://mcp.subdupes.com/mcp

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