Amortization Schedule for ChatGPT

com.gumballtools/amortize

Row-by-row loan amortization schedules: monthly or daily accrual, extra principal, PMI, biweekly.

client:ChatGPT transport:streamable-http tools:1

Install Amortization Schedule in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://amortize.gumballtools.com/api/mcp

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