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Best x402 verification APIs

25 x402 verification APIs catalogued, ranked by Trust score (uptime, success rate, latency and price, on real traffic). Updated June 17, 2026.

Top pick78Token Price Snapshot80% uptime · from $0.001 – $0.95/call
BestCheapestMost reliable
#API
17880%38 ms$0.001 – $0.9525$1.0936Payments per day, last 7 days
27660%652 ms$0.0001 – $0.06666779$0.18*85Payments per day, last 7 days
37152%750 ms$0.001 – $0.0053$7.8060Payments per day, last 7 days
46647%348 ms$0.001 – $0.01519$0.33186
56262%90 ms$0.011——
66161%89 ms$0.0011——
76060%91 ms$0.011——
85959%20 ms$0.051——
95858%89 ms$0.011——
105757%84 ms$0.005 – $0.012——
115656%305 ms$0.0051——
125651%21 ms$0.005 – $0.1516$0.4720Payments per day, last 7 days
135555%344 ms$0.005 – $0.012——
145439%166 ms$0.005 – $0.0517$0.30*22Payments per day, last 7 days
155252%104 ms$0.0011——
165050%88 ms$0.001 – $0.015——
175050%89 ms$0.0005 – $0.0012——
184848%104 ms$0.0011——
194343%320 ms$0.05 – $0.39——
204343%88 ms$0.011——
214141%88 ms$0.011——
223333%213 ms$0.00110——
233040%83 ms$0.1 – $1.55——
2477%22 ms$0.0005 – $49227——
2500%22 ms$0.001 – $0.05373——

FAQ

What is the cheapest x402 verification API?
GPT-5.5 Compact Chat x402 — from $0.0001 – $0.066667 per call.
Which x402 verification API is the most reliable?
Token Price Snapshot, at 80% measured uptime.
What is the best x402 verification API right now?
Token Price Snapshot, with the highest x402radar Trust score (78).
How are these x402 verification APIs ranked?
By x402radar Trust — a composite of measured uptime, success rate, /quote latency and price, computed on real traffic and refreshed hourly.