QuickBuild
GET https://quickbuild.quynguyenbac.workers.dev/api/fx/rate
Listed in PayAI
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.
Other endpoints from quickbuild.quynguyenbac.workers.dev
The same service's other paid functions that Hagglyai tracks, each with its own price. Functions outside Hagglyai's categories are not listed.
| Endpoint | Category | Price per call |
|---|---|---|
| GET /api/base/gas | On-chain data | $0.001 |
| GET /api/chat | LLM inference | $0.003 |
| GET /api/crypto/price | Crypto prices & market data | $0.001 |
| GET /api/markdown | Web page extraction | $0.005 |
| GET /api/summarize | Web page extraction | $0.02 |
| GET /api/translate | Web page extraction | $0.005 |
| GET /v1/chat/completions | LLM inference | $0.003 |
How to buy
This endpoint takes pay-per-call payments over x402. Call it once without paying to see its live price; any x402 client then pays and retries automatically.
curl -i -X GET "https://quickbuild.quynguyenbac.workers.dev/api/fx/rate"
# HTTP/1.1 402 Payment Required: price, asset and payTo are in the responseEstimated calls per day
Paid calls to quickbuild.quynguyenbac.workers.dev's tracked endpoints each day, estimated from the 30-day totals the x402 catalogues report. Each bar is the change in that 30-day total since the day before, plus the calls that left the 30-day window (taken as an average day). It is an estimate: Hagglyai does not measure or pay for these calls.
No usage reported for any of 8 tracked endpoints. Unknown usage is left out, not counted as zero.
Compared with other providers
Coverage matters: a provider whose endpoints report more of their usage can rank higher.
| # | Provider | Reported 30-day calls | Coverage |
|---|---|---|---|
| 1 | x402.orthogonal.com | 5,340 | 192 of 252 endpoints |
| 2 | agent.pocket.network | 4,712 | 14 of 25 endpoints |
| 3 | agent402.tools | 3,670 | 147 of 229 endpoints |
| 4 | x402.ottoai.services | 1,536 | 28 of 32 endpoints |
| 5 | api.losbeto.xyz | 1,370 | 21 of 108 endpoints |
| 6 | api.kadec0.xyz | 1,310 | 12 of 12 endpoints |
| 7 | api.x402node.dev | 1,272 | 160 of 189 endpoints |
| 8 | vaaya.ai | 1,090 | 36 of 70 endpoints |