x402engine.app
x402Grade BLast checked 2 hours ago
GET https://x402engine.app/api/crypto/markets
Market rankings with price, volume, market cap — filterable by category
Price$0.002per price or market lookup · paid in USD on Base
Uptime100%
4/4 probes · 452.5 ms
Score75Grade B
Paid usage, 30 days2payers · 2 calls
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://x402engine.app/api/crypto/markets"
# HTTP/1.1 402 Payment Required: price, asset and payTo are in the responseRecent checks
| Checked (UTC) | Result | Status | Time | Live price |
|---|---|---|---|---|
| 2026-10-11 09:16 | Valid 402 | 402 | 612 ms | $0.002 |
| 2026-10-11 04:45 | Valid 402 | 402 | 368 ms | $0.002 |
| 2026-10-11 00:15 | Valid 402 | 402 | 414 ms | $0.002 |
| 2026-10-10 19:30 | Valid 402 | 402 | 491 ms | $0.002 |
Receipts
No test purchases yet. Graded test purchases are next on our list; until then every number here comes from unpaid checks.
What a check proves