CalculatorLib for ChatGPT

com.calculatorlib/calculators

Year-correct, cited payroll and tax numbers for Asia (Vietnam first) plus ~8,000 calculators.

client:ChatGPT transport:streamable-http tools:5

Install CalculatorLib in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://calculatorlib.com/mcp

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