api.quantoracle.dev/v1/fx/purchasing-power-parity
x402 endpoint · grade B · score 77.4 · confidence 0.55
As of 2026-06-30, api.quantoracle.dev/v1/fx/purchasing-power-parity on Base held a flawless 100.0% uptime across 24 reliability checks over the past 30 days. Responses came back moderate at 356 ms median and it has held its advertised price steady at $0.0050. Its x402-trust grade is B (score 77.4 from a moderate sample, tracked for 12 days), so it currently looks safe to use.
| Trust grade | B (score 77.4) |
| Recommendation | proceed |
| Confidence | 0.55 — free tier, reduced density (every 6th probe) |
| 30-day uptime | 100.0% |
| Median latency | 356 ms |
| Probes (30d, sampled) | 24 |
| Advertised price | $0.005 USDC |
| Price stability (30d) | stable |
| Network | eip155:8453 |
| First seen | 2026-06-18 |
| Last probed | 2026-06-29 |
| Status | listed |
| Snapshot computed | 2026-06-29 23:42 UTC |
Need more than the free snapshot? The paid API adds a live probe at decision time (with timestamp), full 30-minute probe density & confidence, 90-day history, on-chain settlement correlation, and watch/alerting.
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POST /v1/x402-trust · POST /v1/x402-history · free MCP: npx -y x402-trust-mcp