# x402check

> Check before paying any x402 tool. Trust-check the seller URL: is this API a scam/legit, is it reachable, is the 402 real, what payTo/price does it demand, and has payTo or price drifted. Returns ok|caution|avoid + that tool's history only. Budget guard and compare helpers for agents. Paid per URL. Not a wallet OFAC/drainer scanner.

- **Domain**: `x402check.dev`
- **Provider**: x402check (https://x402check.dev)
- **A2A protocol version**: 2
- **Kind**: paid_api
- **Live-responds (last probe)**: None
- **Signed card**: False
- **Streaming**: False
- **Quality score**: 90%
- **Payment protocol**: x402 · network `eip155:8453` · ≥ $0.01
- **Wallet**: `0xd98451514c7510e3fcd0463de973b9a6bb89a86f`

## Skills
- **Preflight one x402 tool** — Check before paying one absolute https x402 seller URL. Use for: is this API a scam; is this endpoint safe/legit; verify payTo; detect price or wallet drift; ch
- **Verify x402 payTo** — Extract and verify the receiving wallet (payTo) from a seller's live 402 challenge, with history of wallet rotations. Use before signing a USDC transfer.
- **Compare / batch preflight x402 tools** — Trust-check up to 25 seller URLs in one request. Charged per URL (N × unit) in a single Exact settlement. Use when comparing candidates, picking cheapest/most r

## URLs
- Agent card: https://x402check.dev/.well-known/agent-card.json
- Page (HTML): https://agenstry.com/agents/x402check.dev
- Documentation: https://x402check.dev/docs