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List

Cheapest x402 verification APIs

24 x402 verification APIs catalogued, ranked by price per call (cheapest first). Updated September 20, 2026.

Top pick78Mru-oracle100% uptime · from $0.001 – $0.015/call
BestCheapestMost reliable
#API
1——$0.00005 – $0.00527——
2——$0.0001 – $10238762 ms—
3——$0.0005 – $49227209 ms—
4——$0.001 – $0.05373105 ms—
5——$0.001 – $0.005549 ms—
6——$0.0011128 ms—
7$0.1580▼ 100.0%$0.001 – $0.01528194 ms78
8$670.47*33,508+▼ 1.9%$0.001 – $0.123—55
9$4.5150▼ 20.0%$0.001 – $15124 ms71
10——$0.0011140 ms—
11——$0.001 – $0.01594 ms—
12——$0.00110——
13——$0.0052212 ms—
14——$0.005 – $0.012106 ms—
15$0.06*3$0.005 – $0.023182 ms—
16——$0.005 – $0.0217153 ms—
17$0.1315▼ 100.0%$0.005 – $0.153526 ms69
18——$0.01195 ms—
19——$0.01196 ms—
20——$0.01197 ms—
21——$0.01195 ms—
22——$0.01194 ms—
23——$0.05 – $0.39201 ms—
24——$0.1 – $1.55111 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?
gpt55.558686.xyz, at 100% measured uptime.
What is the best x402 verification API right now?
Mru-oracle, with the highest 402radar Trust score (78).
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.