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Best x402 validation APIs

14 x402 validation APIs catalogued, ranked by Trust score (uptime, success rate, latency and price, on real traffic). Updated September 17, 2026.

Top pick100glim.sh100% uptime · from $0.001 – $0.06/call
BestCheapestMost reliable
#API
1$39.549,683▼ 1.9%$0.001 – $0.068116 ms100
2$0.1692▲ 100.0%$0.001 – $0.01528200 ms79
3$0.1315▲ 33.3%$0.005 – $0.153525 ms69
4——$0.0001 – $10238779 ms—
5——$0.01182 ms—
6——$0.05 – $0.39204 ms—
7——$0.001 – $0.05373104 ms—
8——$0.0011137 ms—
9——$0.00110——
10——$0.0031205 ms—
11——$0.001 – $0.005568 ms—
12——$0.0005 – $49227210 ms—
13——$0.0011134 ms—
14——$0.00005 – $0.00527——

FAQ

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