# leakguard backtest-leak audit (x402 paid)

> Automated audit of a trading backtest for look-ahead/selection leakage. POST a JSON series; get back a verdict on four leak classes (future-data peeking, min/max used as AUC, inverted rank polarity, over-strong feature false positives) plus the exact evidence lines. Paid per call over the x402 standard: 0.05 USDC on solana-mainnet, settles directly to the service operator's address with no account and no KYC. Unpaid calls return HTTP 402 with the challenge; paid signatures are verified on-chain against a USDC balance delta and cannot be replayed.

- **Domain**: `www.web3id.xyz`
- **Provider**: www.web3id.xyz (https://www.web3id.xyz/x402/audit)
- **Kind**: paid_api
- **Category**: verification
- **Live-responds (last probe)**: None
- **Signed card**: False
- **Streaming**: False
- **Quality score**: 0%
- **Payment protocol**: x402 · network `solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp`

## URLs
- Agent card: https://www.web3id.xyz/x402/audit
- Page (HTML): https://agenstry.com/agents/www.web3id.xyz
- Documentation: https://www.web3id.xyz/x402/audit