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402radar
List

Most reliable x402 verification APIs

24 x402 verification APIs catalogued, ranked by measured uptime. Updated June 23, 2026.

Top pick89Token Price Snapshot100% uptime · from $0.001 – $0.95/call
BestCheapestMost reliable
# API
1 $13.17 623 ▲ 999.0% $0.001 – $0.95 45 384 ms 89
2 $0.28* 133 ▼ 97.0% $0.0001 – $0.066667 120 686 ms 80
3 $0.19 109 ▲ 100.0% $0.001 – $0.015 28 357 ms 79
4 $0.97* 66 ▼ 22.2% $0.005 – $0.02 17 320 ms 77
5 $1.96 65 ▼ 80.0% $0.001 – $0.005 5 744 ms 77
6 $1.15 39 ▼ 50.0% $0.005 – $0.15 34 22 ms 74
7 $0.16 32 ▲ 200.0% $0.00005 – $0.005 26 91 ms 73
8 — — $0.01 1 90 ms —
9 — — $0.005 – $0.01 2 348 ms —
10 — — $0.001 1 134 ms —
11 — — $0.005 1 364 ms —
12 — — $0.01 1 91 ms —
13 — — $0.1 – $1.5 5 82 ms —
14 — — $0.005 – $0.01 2 105 ms —
15 — — $0.001 10 373 ms —
16 — — $0.001 – $0.01 5 90 ms —
17 — — $0.0005 – $49 227 191 ms —
18 — — $0.01 1 90 ms —
19 — — $0.05 – $0.3 9 341 ms —
20 — — $0.01 1 89 ms —
21 — — $0.001 1 104 ms —
22 — — $0.01 1 91 ms —
23 $655.60* 32,770+ ▲ 0.2% $0.001 – $0.1 23 178 ms 55
24 — — $0.001 – $0.05 373 34 ms —

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 (89).
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.