api.usenami.io/v1/perp/oi-history
Usenami · grade D · score 38.0 · confidence 0.63
As of 2026-06-30, api.usenami.io/v1/perp/oi-history on Base answered only 9.4% of 32 reliability checks over the past 30 days, leaving it unreliable for anything production-facing. Responses came back sluggish at 629 ms median and it has held its advertised price steady at $0.0050. Its x402-trust grade is D (score 38.0 from a moderate sample, tracked for 18 days), so it is best avoided for now. It is no longer listed in the x402 directory.
| Trust grade | D (score 38.0) |
| Recommendation | avoid |
| Confidence | 0.63 — free tier, reduced density (every 6th probe) |
| 30-day uptime | 9.4% |
| Median latency | 629 ms |
| Probes (30d, sampled) | 32 |
| Advertised price | $0.005 USDC |
| Price stability (30d) | stable |
| Network | eip155:8453 |
| First seen | 2026-06-12 |
| Last probed | 2026-06-26 |
| Status | delisted |
| Snapshot computed | 2026-06-30 17:18 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