harvest for ChatGPT

io.usefulapi/harvest

Read time entries, projects, clients, tasks and invoices; log and update tracked time.

client:ChatGPT transport:streamable-http

Install harvest in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://harvest.usefulapi.io/mcp

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