x402-solvers

x402-solvers.onrender.com · 1 paid endpoint · listed 2026-10-27

Detect whether an arbitrage opportunity exists in a set of token exchange rates (multi-pool negative-cycle scan). Cheap boolean + magnitude signal for trading agents. POST a swap-rate graph, get back whether a profitable cycle exists and how large — without the path.

livelast check 26 h ago

100%valid x402 answers, 72 h

$0.002USDC received on Base, 7 days

2distinct payers, 7 days

53.2score (0-100)

Paid endpoints

Method	Endpoint	Price	Networks
POST	x402-solvers.onrender.com/v1/cycles/probe Detect whether an arbitrage opportunity exists in a set of token exchange rates (multi-pool negative-cycle scan). Cheap boolean + magnitude signal for trading a	$0.001	Base

Latest checks

When	Endpoint	HTTP	ms	Result
26 h ago	x402-solvers.onrender.com/v1/cycles/probe	402	245	valid x402 v2 terms

Income on Base (7 days)

Day		Transfers	USDC
2026-11-01		1	$0.001
2026-10-29		1	$0.001

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<a href="https://logicnodes.io/observatory/p/x402-solvers.onrender.com"><img src="https://logicnodes.io/observatory/badge/x402-solvers.onrender.com.svg" alt="x402 status"></a>

Claim it for free with x402_provider_claim (sign with your payout address), and get an alert within minutes when it stops answering with x402_monitor_create ($5 for 30 days). Both work over MCP (https://logicnodes.io/mcp/v2) or POST https://logicnodes.io/v1/tools/<tool>.

Income is all USDC received by the provider's payout address on Base, whatever the source. Score: 0-100: 50 x share of checks in the last 72 h that returned valid x402 payment terms + 30 x min(1, log10(1 + USDC received in 7 days) / 4) + 20 x min(1, log10(1 + distinct payers in 7 days) / 3). A provider never checked scores on income only; income is all USDC received by its payout address on Base, whatever the source. JSON: /v1/observatory/providers/x402-solvers.onrender.com