SigmaClose for ChatGPT

com.sigmaclose/server

Read-only consolidated P&L, balance sheet and cash flow across several QuickBooks companies.

client:ChatGPT transport:streamable-http

Install SigmaClose in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://sigmaclose.com/mcp

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