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Best x402 Market Data APIs

15 x402 Market Data APIs catalogued, ranked by Trust score (uptime, success rate, latency and price, on real traffic). Updated August 5, 2026.

Top pick98Otto AI100% uptime · from $0.001 – $1.75/call
BestCheapestMost reliableAll Market Data →
# API
1 $31.87 ▼ 94.7% 8,612 ▼ 40.8% $0.001 – $1.75 71 — 98
2 $308.42 ▼ 100.0% 39,906+ $0.0004 – $3 35964 — 93
3 $256.10 ▼ 93.0% 1,180 ▼ 9.9% $0.0025 – $1.25 25 — 92
4 $3.61* ▼ 90.3% 1,235 ▼ 55.0% $0.002 1 — 92
5 $2.71* ▼ 99.6% 182 ▼ 75.0% $0.005 – $0.05 107 — 82
6 $98.74* ▼ 88.4% 2,957 ▲ 27.0% $0.01 – $0.25 79 — 81
7 $0.27* ▼ 96.2% 78 ▼ 40.0% $0.003 – $0.006 4 — 78
8 $0.51 ▼ 100.0% 63 $0.001 – $0.1258 11 — 77
9 $0.46* 46 ▲ 100.0% $0.015 23 — 75
10 $4.21* ▼ 98.8% 37 ▼ 50.0% $0.01 – $0.28 18 — 74
11 $0.94* ▼ 98.9% 32 ▲ 100.0% $0.005 – $0.1 6 — 73
12 $4.31* ▼ 100.0% 19 ▼ 93.3% $0.015 – $1 12 — 70
13 — — $0.25 – $1.5 2 — —
14 — — $0.01 1 — —
15 — — $0.001 3 — —

FAQ

What is the cheapest x402 Market Data API?
OrbisAPI — from $0.0004 – $3 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 (98).
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.