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402radar
List

Most reliable x402 routing APIs

21 x402 routing APIs catalogued, ranked by measured uptime. Updated June 22, 2026.

Top pick94Scout100% uptime · from $0.005 – $1/call
BestCheapestMost reliable
# API
1 $88.26 6,679 ▲ 19.8% $0.005 – $1 91 276 ms 94
2 $0.92 125 ▲ 17.6% $0.005 – $0.05 10 2702 ms 80
3 $0.28* 133 ▼ 50.0% $0.0001 – $0.066667 120 697 ms 80
4 $1.96 65 ▼ 40.0% $0.001 – $0.005 5 745 ms 77
5 — — $0.001 1 369 ms —
6 — — — 1 1263 ms —
7 — — $0.01 1 526 ms —
8 — — $0.0005 – $49 227 194 ms —
9 — — $0.005 – $0.01 3 346 ms —
10 — — $0.01 2 989 ms —
11 — — $0.001 1 30 ms —
12 — — $0.01 1 733 ms —
13 — — $0.005 1 236 ms —
14 — — $0.005 1 110 ms —
15 — — $0.005 1 38 ms —
16 $0.09* 39 $0.001 – $0.1 24 1751 ms 28
17 — — $0.005 – $0.01 11 1742 ms —
18 — — $0.005 – $0.01 2 35 ms —
19 — — $0.001 1 35 ms —
20 — — $0.003 – $10 12 1752 ms —
21 — — $0.001 – $0.05 373 33 ms —

FAQ

What is the cheapest x402 routing API?
GPT-5.5 Compact Chat x402 — from $0.0001 – $0.066667 per call.
Which x402 routing API is the most reliable?
Scout, at 100% measured uptime.
What is the best x402 routing API right now?
Scout, with the highest 402radar Trust score (94).
How are these x402 routing APIs ranked?
By 402radar Trust — a composite of measured uptime, success rate, /quote latency and price, computed on real traffic and refreshed hourly.