Rechnio MCP by usefulapi for ChatGPT

io.usefulapi/rechnio

List invoices, customers, bank transactions and receipts; create draft invoices in Rechnio.

client:ChatGPT transport:streamable-http tools:6

Install Rechnio MCP by usefulapi in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://rechnio.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