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Best x402 Market Data APIs

20 x402 Market Data APIs catalogued, ranked by Trust score (uptime, success rate, latency and price, on real traffic). Updated September 15, 2026.

Top pick100Otto AI100% uptime · from $0.001 – $1.75/call
BestCheapestMost reliableAll Market Data →
#API
1$60.23▼ 57.1%8,178▼ 83.0%$0.001 – $1.7510846 ms100
2$4.82*▲ 809.4%516▲ 12.5%$0.005 – $0.019290 ms86
3$69.38▲ 16.6%334▼ 65.9%$0.0025 – $1.2525539 ms85
4$19.45*▼ 47.7%831▲ 999.0%$0.01 – $0.2582259 ms84
5$0.74*▲ 428.6%137▲ 85.7%$0.005 – $0.16124 ms81
6$1.28*▼ 16.3%85▲ 999.0%$0.01523288 ms78
7$1.22▲ 269.7%67▼ 100.0%$0.001 – $0.1205251153 ms77
8$0.23*▼ 60.3%67▼ 84.6%$0.003 – $0.006423 ms77
9$5.39*▼ 19.4%36▼ 100.0%$0.015 – $117412 ms73
10$0.59*16$0.001 – $0.2514496 ms69
11$1.07*▲ 999.0%10▼ 100.0%$0.005 – $0.05107122 ms67
12$0.05*5▲ 0.0%$0.01265 ms63
13$0.20*▼ 80.0%4▼ 100.0%$0.01 – $0.2818913 ms62
14$0.04*4▲ 0.0%$0.001134 ms62
15$0.15*▼ 93.8%3$0.053111 ms61
16$0.03*▼ 80.0%1$0.005 – $0.03444 ms13
17——$0.001 – $335964——
18——$0.011214 ms—
19——$0.0013304 ms—
20——$1.52253 ms—

FAQ

What is the cheapest x402 Market Data API?
Otto AI — from $0.001 – $1.75 per call.
Which x402 Market Data API is the most reliable?
Otto AI, at 100% measured uptime.
What is the best x402 Market Data API right now?
Otto AI, with the highest 402radar Trust score (100).
How are these x402 Market Data APIs ranked?
By 402radar Trust — a composite of measured uptime, success rate, /quote latency and price, computed on real traffic and refreshed hourly.