Moltline Merchant Maths for ChatGPT

com.moltlinestudio/merchant

Processor fees, charge-to-net, invoice totals and proration. 3 of 6 tools free.

client:ChatGPT transport:streamable-http tools:6

Install Moltline Merchant Maths in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://mcp.moltlinestudio.com/merchant

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