UseThatApp for ChatGPT

com.usethatapp/usethatapp

Create and manage the apps you sell on UseThatApp: listings, versions, prices, integration settings.

client:ChatGPT transport:streamable-http

Install UseThatApp in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://www.usethatapp.com/mcp

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