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Most reliable x402 Bitcoin APIs

34 x402 Bitcoin APIs catalogued, ranked by measured uptime. Updated September 15, 2026.

Top pick73Carbon Cashmere — Signal BTC (re-probe)100% uptime · from $0.003 – $0.5/call
BestCheapestMost reliableAll Bitcoin →
#API
1$0.97*▼ 38.2%32▼ 100.0%$0.003 – $0.525722 ms73
2$25.65*▼ 50.4%939▼ 48.6%$0.01 – $1296364 ms85
3$0.02▲ 0.0%19▼ 100.0%$0.001 – $0.00158512248 ms70
4$0.15*▲ 15.4%65▼ 83.3%$0.002 – $0.0056387 ms77
5$0.09*▼ 70.0%18▼ 100.0%$0.005 – $0.053468 ms70
6$1.04*▼ 35.0%190▲ 100.0%$0.001 – $0.120122 ms82
7——$0.005 – $0.01559 ms—
8$1.18▼ 81.7%38▼ 83.3%$0.005 – $0.52964 ms72
9$0.03*▲ 0.0%1$0.03 – $0.056214 ms55
10——$0.011337 ms—
11——$0.0241442 ms—
12$0.86*▲ 22.9%147▼ 44.4%$0.005 – $0.0565120 ms81
13$0.05*▲ 150.0%33▲ 100.0%$0.001 – $0.014972 ms73
14$0.04*▲ 300.0%37▲ 0.0%$0.0011162 ms74
15$1.66*▼ 83.5%80▼ 80.0%$0.01 – $26344 ms76
16$0.29*11▲ 100.0%$0.031304 ms67
17$1.83*38$0.0001 – $0.2557107 ms74
18$0.03*▼ 66.7%6▲ 100.0%$0.005 – $0.0084153 ms64
19$68.50*▲ 102.8%2,872▼ 90.8%$0.001 – $0.0839178 ms84
20$0.16*▼ 61.9%162▼ 87.5%$0.001442 ms82
21$0.09▼ 80.0%93▼ 43.8%$0.001326 ms79
22$1.17*▼ 42.9%117▼ 50.0%$0.01 – $0.2511264 ms80
23$0.01*2$0.003 – $0.351593 ms59
24$0.12*▼ 47.8%12▼ 66.7%$0.01 – $0.052284 ms68
25——$0.0121444 ms—
26$0.29*▼ 70.4%120▼ 20.0%$0.001 – $0.00536129 ms80
27——$0.03158 ms—
28$3.44▼ 41.2%47▼ 50.0%$0.001 – $15132 ms71
29——$0.02250 ms—
30——$0.001 – $0.124——
31———4——
32——$0.002 – $123043 ms—
33$1.13*▲ 130.6%225▲ 300.0%$0.00521—44
34$0.011$0.01 – $0.0611—21
34 rows · page 1/1

FAQ

What is the cheapest x402 Bitcoin API?
Market2000 — from $0.0001 – $0.25 per call.
Which x402 Bitcoin API is the most reliable?
Carbon Cashmere — Signal BTC (re-probe), at 100% measured uptime.
What is the best x402 Bitcoin API right now?
Carbon Cashmere — Signal BTC (re-probe), with the highest 402radar Trust score (73).
How are these x402 Bitcoin APIs ranked?
By 402radar Trust — a composite of measured uptime, success rate, /quote latency and price, computed on real traffic and refreshed hourly.