CycleCalcs Astronomy for ChatGPT

com.cyclecalcs/astronomy

Astronomy: sun, moon, planet, eclipse, twilight and star position calculations.

client:ChatGPT transport:streamable-http tools:11

Install CycleCalcs Astronomy in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://www.cyclecalcs.com/mcp

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