PineBill for ChatGPT

app.pinebill/mcp

Invoices, estimates, customers, expenses, projects, task timers, calendar, and reports in PineBill.

client:ChatGPT transport:streamable-http

Install PineBill in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://www.pinebill.app/api/mcp

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