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Best x402 Commerce APIs

8 x402 Commerce APIs catalogued, ranked by Trust score (uptime, success rate, latency and price, on real traffic). Updated June 22, 2026.

Top pick95AnySpend100% uptime · from $0.1 – $3/call

#	API
1	AnySpend `x402.anyspend.com`	$3.7k* ▼ 22.9%	2,227 ▲ 100.0%	$0.1 – $3	2	369 ms	95
2	Bitrefill `api.bitrefill.com` Base	$225.35* ▲ 999.0%	59 ▼ 38.5%	$0.001 – $1000	8	121 ms	76
3	Mail `mail.cusethejuice.com` Base	$8.90* ▼ 74.0%	245 ▲ 100.0%	$0.01 – $1	56	116 ms	67
4	Underground `underground.substratesymposium.com` Base	$0.05* ▼ 99.9%	5	$0.01 – $4.99	26	270 ms	63
5	undo.agentutil.net `undo.agentutil.net` Base	—	—	$0.002	2	200 ms	—
6	shop.pett.ai `shop.pett.ai` Base	—	—	$0.01	1	23 ms	—
7	askclaude.shop `askclaude.shop` Base	—	—	$0.01 – $0.03	2	396 ms	—
8	E-commerce Price Monitor `e-commerce-price-monitoring-production.up.railway.app` Base	—	—	$0.005 – $0.01	2	348 ms	—

FAQ

What is the cheapest x402 Commerce API?

Bitrefill — from $0.001 – $1000 per call.

Which x402 Commerce API is the most reliable?

AnySpend, at 100% measured uptime.

What is the best x402 Commerce API right now?

AnySpend, with the highest 402radar Trust score (95).

How are these x402 Commerce APIs ranked?

By 402radar Trust — a composite of measured uptime, success rate, /quote latency and price, computed on real traffic and refreshed hourly.