x402radar
List

Most reliable x402 monitoring APIs

16 x402 monitoring APIs catalogued, ranked by measured uptime. Updated June 17, 2026.

Top pick62AegisAGI Security62% uptime · from $0.005/call
BestCheapestMost reliable
#API
16262%116 ms$0.0051——
27660%652 ms$0.0001 – $0.06666779$0.18*85Payments per day, last 7 days
36060%274 ms$0.011——
45959%20 ms$0.051——
55555%344 ms$0.005 – $0.012——
66352%90 ms$0.001 – $0.00212$0.2038Payments per day, last 7 days
75252%336 ms$0.0011——
85252%350 ms$0.011——
95050%88 ms$0.001 – $0.015——
106647%348 ms$0.001 – $0.01519$0.33186
114545%1742 ms$0.0051——
123040%83 ms$0.1 – $1.55——
1399%100 ms$0.003 – $1012——
1477%22 ms$0.0005 – $49227——
1500%1743 ms$0.0051——
1600%22 ms$0.001 – $0.05373——

FAQ

What is the cheapest x402 monitoring API?
GPT-5.5 Compact Chat x402 — from $0.0001 – $0.066667 per call.
Which x402 monitoring API is the most reliable?
AegisAGI Security, at 62% measured uptime.
What is the best x402 monitoring API right now?
AegisAGI Security, with the highest x402radar Trust score (62).
How are these x402 monitoring APIs ranked?
By x402radar Trust — a composite of measured uptime, success rate, /quote latency and price, computed on real traffic and refreshed hourly.