SolidInvoice for ChatGPT

co.solidinvoice/mcp

Create and send invoices and quotes, manage clients, and track payments in SolidInvoice.

client:ChatGPT transport:streamable-http

Install SolidInvoice in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://solidinvoice.app/_mcp

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