# Quickbuild

> Foreign-exchange rates from one base currency (`from`, default USD) to a list of currencies (`to`, comma-separated, or "all"; default 14 majors incl. EUR, GBP, JPY, CNY, INR, KRW, VND), with `amount` converted. Live mode uses Coinbase public exchange rates (updated about every minute, 160+ ISO 4217 currencies plus XAU/XAG), falling back to exchangerate-api daily rates. With `date=YYYY-MM-DD` it returns the ECB reference rates for that day (Frankfurter, ~30 major currencies, back to 1999-01-04). All params optional: with none it returns USD to 14 major currencies. Invalid codes = 400, never charged.

- **Domain**: `quickbuild.quynguyenbac.workers.dev`
- **Provider**: quickbuild.quynguyenbac.workers.dev (https://quickbuild.quynguyenbac.workers.dev/)
- **Kind**: paid_api
- **Live-responds (last probe)**: None
- **Signed card**: False
- **Streaming**: False
- **Quality score**: 70%
- **Payment protocol**: x402 · network `eip155:8453` · ≥ $0.001
- **Wallet**: `0x751a4c3841be287544c371b4ee09bd3366aea7cf`

## URLs
- Agent card: https://quickbuild.quynguyenbac.workers.dev/
- Page (HTML): https://agenstry.com/agents/quickbuild.quynguyenbac.workers.dev
- Documentation: https://quickbuild.quynguyenbac.workers.dev/api/fx/rate