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List

Most reliable x402 verification APIs

24 x402 verification APIs catalogued, ranked by measured uptime. Updated August 5, 2026.

Top pick90Token Price Snapshot100% uptime · from $0.001 – $0.49/call
BestCheapestMost reliable
# API
1 $14.14 807 ▼ 50.7% $0.001 – $0.49 46 — 90
2 $0.39 287 ▲ 100.0% $0.001 – $0.015 28 — 84
3 $0.96* 65 $0.005 – $0.05 17 — 77
4 $1.31 47 ▼ 66.7% $0.005 – $0.15 34 — 75
5 $0.09 11 ▼ 100.0% $0.001 – $0.01 5 — 67
6 — — $0.01 1 — —
7 — — $0.001 1 — —
8 — — $0.001 – $0.01 5 — —
9 — — $0.005 – $0.01 2 — —
10 — — $0.0005 – $49 227 — —
11 — — $0.01 1 — —
12 — — $0.01 1 — —
13 — — $0.05 – $0.3 9 — —
14 — — $0.1 – $1.5 5 — —
15 — — $0.01 1 — —
16 — — $0.005 – $0.01 2 — —
17 — — $0.001 1 — —
18 — — $0.005 1 — —
19 — — $0.01 1 — —
20 $109.49* 9,426 ▼ 63.3% $0.0001 – $10 226 — 94
21 — — $0.001 – $0.05 373 — —
22 — — $0.001 10 — —
23 $386.20* 19,302 $0.001 – $0.1 23 — 48
24 $0.09 17 $0.00005 – $0.005 27 — 24

FAQ

What is the cheapest x402 verification API?
Notify — from $0.00005 – $0.005 per call.
Which x402 verification API is the most reliable?
Token Price Snapshot, at 100% measured uptime.
What is the best x402 verification API right now?
Token Price Snapshot, with the highest 402radar Trust score (90).
How are these x402 verification APIs ranked?
By 402radar Trust — a composite of measured uptime, success rate, /quote latency and price, computed on real traffic and refreshed hourly.