Cypher eSIM for ChatGPT

com.cypheresim/esim

Buy no-KYC travel eSIMs and eSIMs with a real phone number in 180+ countries, paid in crypto.

client:ChatGPT transport:streamable-http tools:9

Install Cypher eSIM in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://cypheresim.com/mcp

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