thirdtrail for ChatGPT

io.github.thirdtrail/thirdtrail

Elevation-corrected sun, moon, twilight, solar and tide data for any point on Earth

client:ChatGPT transport:streamable-http

Install thirdtrail in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://thirdtrail.life/mcp

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