ChronoGate for ChatGPT

io.github.chronogate/chronogate

Timezone and business-day truth for agents: now, DST-safe convert, relative dates, holidays.

client:ChatGPT transport:streamable-http tools:5

Install ChronoGate in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://chronogate-self.vercel.app/mcp

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