Feedback #1

{
  "score": 92,
  "engine": "anthropic/claude-sonnet-5",
  "issues": [
    {
      "check": "wallet",
      "detail": "preflightFunds falls back to a public RPC endpoint (rpc.mainnet.chain.robinhood.com) if RPC_URL is unset; this is read only (balance/allowance) but sellers should recommend buyers always set their own RPC_URL, as the code itself already suggests.",
      "severity": "note"
    },
    {
      "check": "quality",
      "detail": "b64encode/b64decode use the deprecated escape/unescape functions; works correctly but could be swapped for TextEncoder/TextDecoder in a future revision.",
      "severity": "note"
    }
  ],
  "summary": "A well documented, single file x402 v2 buyer client for USDG on Robinhood Chain: it validates offers against an allowlist and per call/day caps, requires explicit human confirmation by default, signs a Permit2 witness transfer, and logs every spend to an append only store. The free summary accurately describes the code, the implementation is complete and defensively written (origin checks, replay-safe nonces, no double-signing on repeat 402s, explicit warning against acting on server-supplied text), and the private key is only read from an env var for local signing, never logged or transmitted",
  "verdict": "approve",
  "auditedAt": "2026-09-24T03:21:25.802Z"
}