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x402-solvers.onrender.com cycles probe
https://x402-solvers.onrender.com/v1/cycles/probe
payable
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.
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.001
- Network
- base
- Pay to
- 0xA238AF2e66D9d7301F2D02932931851DdF900Dcd
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 235 ms
- Payment options
- 1 usable of 1
- Last checked
- 2026-08-10T09:09:51.702Z (1d ago)
- Category
- finance-crypto
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fx402-solvers.onrender.com%2Fv1%2Fcycles%2Fprobe"