reference data for ChatGPT

dev.usaref/reference-data

N American govt data, cited to source: rates, VAT, tax, wages, holidays, FX. 10 countries; USA free.

client:ChatGPT transport:streamable-http tools:11

Install reference data in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://usaref.dev/mcp

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