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presign-guard ERC-20 Allowance Audit
x402
presign-guard ERC-20 Allowance Audit is a paid API for AI agents from presign-guard.onrender.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-11).
Audits all open ERC-20 token approvals for an EVM wallet, flagging risky or unlimited allowances with a green/orange/red verdict, grade, and revocation recommendations.
Price / call$0.02
Success—
StatusUnknown
How this service works
Wallet approval audit (green/orange/red, grade, one-line summary): every open ERC-20 allowance of an EVM wallet with who the spender is (flagged, plain wallet, unverified, unlimited) and which ones to revoke
Output
Returns a JSON object with: a top-level verdict (green/orange/red), a grade label (SAFE/CAUTION/RISKY/AVOID), a one-liner plain-language summary, an array of all open approvals (each with token, spender address, spender name if known, trust status, allowance amount, approval timestamp, severity, reason codes, and a revoke flag), an array of reason objects with severity codes, a summary object with counts (approvals, tokens, unlimited, toRevoke), a timestamp, and a revoke URL for easy remediation.
Example use cases
Post-hack wallet exposure check
“My friend's Base wallet 0x1234...abcd might have been drained through a bad approval — can you scan all their open ERC-20 allowances and tell me which spenders still have access and what the overall risk verdict is?”
DeFi spring-clean revocation review
“I want to clean up my Polygon wallet 0xDead...Beef — show me all my open token approvals, highlight any unlimited ones or flagged contracts, and tell me which ones I should revoke.”
Pre-sale wallet safety audit
“Before I use my Arbitrum wallet 0x9999...1111 to participate in a token sale, can you check all its existing ERC-20 approvals and give me a safety grade so I know if there are any risky allowances I should clear first?”
Technical details
Endpoint
GEThttps://presign-guard.onrender.com/v1/approvals?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a comprehensive, pre-interpreted audit of all ERC-20 token approvals for a specific EVM wallet — especially when you want spender identity resolution, risk grading, and actionable revocation recommendations in a single call. It is preferable over raw on-chain queries when you want human-readable severity labels and aggregated risk verdicts rather than raw event logs.
Side effects
- Invalid or malformed wallet address returns an error — ensure 0x-prefixed checksummed address
- Unsupported chain value returns error — only base, ethereum, arbitrum, optimism, polygon, bsc are valid
- Wallet with no approvals returns empty approvals array with green verdict
- Rate limiting or upstream RPC failures may cause timeouts or 5xx responses
- Very new wallets or chains with limited indexer coverage may show incomplete approval history
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
Reviews
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