Unlimited approval
Unlimited TRC20 approval means remaining allowance is the max uint256 value. Common on named DEX routers; dangerous on unknown spenders.
Definition
Unlimited approval is an allowance remaining equal to the maximum uint256 value most TRC20 tokens treat as no cap. Wallets display “Unlimited” instead of the raw integer.
It is still just a number in the allowance slot.
How it appears on-chain
approve(spender, max_uint) or an increase that reaches the ceiling. transferFrom can then pull until the owner’s balance is gone, without the remaining number meaningfully counting down.
Revoke sets a small number, usually 0.
How this checker shows it
Unlimited filter and a flag on the row. Named routers often light it up. Unknown spenders lighting it up is the drain pattern.
Sample named: TUSD→SunSwap on TRX6Q82wMqWNbCCiLqejbZe43wk1h1zJHm.
Common confusion
Unlimited is not a TRON energy setting. Unlimited is not automatically theft. Unlimited does not expire by calendar.
Fake “remove unlimited” seed sites are phishing.
Related mechanics
Allowance, approve, spender, drain problem, revoke. Independent desk. @wholetron.
Independent desk: lists only, never a seed phrase, help at @wholetron with public addresses only.
FAQ
Is it a separate token standard?
No. Same TRC20 allowance, huge amount.
Does it expire?
No.
Always malicious?
No for known routers you use.
USDT unlimited danger?
Unknown spender + official USDT is high priority.
Can you set unlimited to zero here?
No. Lists only.
Help?
@wholetron.