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Most reliable x402 Market Data APIs

13 x402 Market Data APIs catalogued, ranked by measured uptime. Updated June 17, 2026.

Top pick91Otto AI85% uptime · from $0.001 – $0.15/call
BestCheapestMost reliableAll Market Data →
#API
19185%47 ms$0.001 – $0.1544$29.574,745Payments per day, last 7 days
27885%133 ms$0.001 – $39985$971.61150,000+Payments per day, last 7 days
36383%276 ms$0.02 – $236$2.06*16Payments per day, last 7 days
46778%470 ms$0.0025 – $1.2521$0.01*1Payments per day, last 7 days
57869%48 ms$0.001 – $0.11982511$1.15116Payments per day, last 7 days
66865%22 ms$0.003 – $0.0064$0.07*14Payments per day, last 7 days
76463%199 ms$0.01 – $0.2573$24.461,105Payments per day, last 7 days
84159%234 ms$0.25 – $1.52——
95757%135 ms$0.0013——
106256%114 ms$0.005 – $0.15$0.38*31Payments per day, last 7 days
114750%906 ms$0.01 – $0.253$0.33*5Payments per day, last 7 days
1200%48 ms$0.011——
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FAQ

What is the cheapest x402 Market Data API?
Otto AI — from $0.001 – $0.15 per call.
Which x402 Market Data API is the most reliable?
Otto AI, at 85% measured uptime.
What is the best x402 Market Data API right now?
Otto AI, with the highest x402radar Trust score (91).
How are these x402 Market Data APIs ranked?
By x402radar Trust — a composite of measured uptime, success rate, /quote latency and price, computed on real traffic and refreshed hourly.