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List

Most reliable x402 verification APIs

25 x402 verification APIs catalogued, ranked by measured uptime. 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
26262%90 ms$0.011——
36161%89 ms$0.0011——
47660%652 ms$0.0001 – $0.06666779$0.18*85Payments per day, last 7 days
56060%91 ms$0.011——
65959%20 ms$0.051——
75858%89 ms$0.011——
85757%84 ms$0.005 – $0.012——
95656%305 ms$0.0051——
105555%344 ms$0.005 – $0.012——
117152%750 ms$0.001 – $0.0053$7.8060Payments per day, last 7 days
125252%104 ms$0.0011——
135651%21 ms$0.005 – $0.1516$0.4720Payments per day, last 7 days
145050%89 ms$0.0005 – $0.0012——
155050%88 ms$0.001 – $0.015——
164848%104 ms$0.0011——
176647%348 ms$0.001 – $0.01519$0.33186
184343%320 ms$0.05 – $0.39——
194343%88 ms$0.011——
204141%88 ms$0.011——
213040%83 ms$0.1 – $1.55——
225439%166 ms$0.005 – $0.0517$0.30*22Payments per day, last 7 days
233333%213 ms$0.00110——
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.