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Best x402 research APIs

14 x402 research APIs catalogued, ranked by Trust score (uptime, success rate, latency and price, on real traffic). Updated September 27, 2026. Few scored providers so far — this ranking firms up as more data arrives.

Top pick75Mru-oracle100% uptime · from $0.001 – $0.015/call
BestCheapestMost reliable
#API
1$0.1045▼ 50.0%$0.001 – $0.01528202 ms75
2$0.2222▼ 100.0%$0.004 – $0.117203 ms71
3——$0.0001 – $10241747 ms—
4——$0.001 – $0.0537354 ms—
5——$0.0005 – $49227181 ms—
6——$0.00005 – $0.00527——
7——$0.0121072 ms—
8——$0.001 – $0.002426 ms—
9——$0.012 – $0.1112464 ms—
10——$0.0013440 ms—
11——$0.002224 ms—
12——$0.0011123 ms—
13——$0.011——
14——$0.0051280 ms—

FAQ

What is the cheapest x402 research API?
Notify — from $0.00005 – $0.005 per call.
Which x402 research API is the most reliable?
Mru-oracle, at 100% measured uptime.
What is the best x402 research API right now?
Mru-oracle, with the highest 402radar Trust score (75).
How are these x402 research APIs ranked?
By 402radar Trust — a composite of measured uptime, success rate, /quote latency and price, computed on real traffic and refreshed hourly.