ChatGPT

Billy MCP by usefulapi for ChatGPT

io.usefulapi/billy

Read Billy invoices, bills, contacts, products and postings; create contacts and draft invoices.

client:ChatGPT transport:streamable-http tools:15

Install Billy MCP by usefulapi in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://billy.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

What ChatGPT can do once it is connected

Billy MCP by usefulapi in other clients

Billy MCP by usefulapi MCP server