ERC-20 ALLOWANCE AUDIT
Inspect Token Approvals and Unlimited Allowance Signals
WalletGenome decodes observable ERC-20 approval transactions and organizes allowance-related warning signs by supported chain and spender.
What the analysis covers
Approval decoding
Decode ERC-20 approve calls to identify spender addresses and distinguish finite from unlimited allowance values.
Stale approval review
Surface older approvals and interactions with unknown contracts as review signals rather than automatic proof of compromise.
Exposure completeness
Keep unknown balances or prices unavailable instead of silently converting missing exposure data to zero dollars.
Useful for
- Finding observable unlimited ERC-20 approval transactions
- Reviewing spender addresses and approval age
- Separating approval counts from estimated monetary exposure
Important limits
- Historical approval transactions do not always prove that an allowance remains active today.
- Exposure estimates depend on available current balances and prices.
- Users should verify and revoke allowances through a trusted chain-specific tool when action is required.
Frequently asked questions
What is an unlimited token approval?
It is an ERC-20 allowance that authorizes a spender to transfer a very large maximum amount, often used so an application does not need approval before every transaction.
Does an old approve transaction mean the allowance is still active?
Not necessarily. A later transaction may have changed or revoked it, so approval history should be reviewed with current chain state when making a security decision.
Does WalletGenome revoke approvals?
No. WalletGenome is read-only and does not submit transactions. Ethereum wallet authentication, when used, is a login message rather than a transaction.