Conditional Approval Auto-Revoke Scheduler

WHAT IT DOES

Conditional Approval Auto-Revoke Scheduler is a specialized Security tool that schedules and executes token approval revocations based on configurable conditions. It reads token contract state, user allowances, approval amounts, and approval expiry times to identify active approvals. The tool monitors conditional trigger states including time-based conditions (expiry after a set duration), value-based conditions (revoke when balance drops below threshold), and state-based conditions (revoke when a specific contract state changes). It reads the scheduled revoke list, revoke execution status, and pending revoke queue to manage automated revocation workflows. The tool supports three key actions: scheduling conditional auto-revoke with specified parameters, executing immediate revocation, and batch revoking multiple approvals in a single transaction. It also tracks revoke history to provide an audit trail of all revocation events.

HOW TO USE

Connect your wallet and select your network from the dropdown. Paste the token contract address and optionally a scheduler contract address for automated revocations. Enter the spender address you want to manage and click "Read Approvals" to fetch the current allowance, expiry, trigger state, and revoke status. To schedule an auto-revoke, enter the approval amount, select a condition type (time-based, value-based, or state-based), and set the condition parameter (e.g., seconds until expiry, balance threshold, or state value). Click "Schedule Auto-Revoke" to submit the scheduling transaction. To revoke immediately, click "Revoke Now". To revoke multiple approvals at once, click "Batch Revoke". The action preview shows the spender, amount, condition, and action type before submission.

CONDITIONAL TRIGGER AND REVOCATION ENGINE

The tool implements a sophisticated conditional revocation engine that evaluates approval conditions and executes revocations automatically. It reads the approvalExpiry from the scheduler contract to determine if a time-based condition has been met—if the current block timestamp exceeds the expiry, the tool flags the approval for revocation. For value-based conditions, the tool reads the user's token balance and compares it against the configured threshold; if the balance falls below the threshold, the revocation is triggered. For state-based conditions, the tool monitors a specified contract state variable and triggers revocation when the state matches the configured value. The tool reads the scheduledRevokeStatus to confirm if a revocation is pending, and pendingRevokeQueue to list all scheduled revocations. When scheduling, the tool constructs a scheduleAutoRevoke transaction with the spender address, approval amount, condition type (uint8: 0=time, 1=value, 2=state), and condition parameter (bytes32). The scheduler contract stores these parameters and executes the revocation when the condition is met. For immediate revocation, the tool calls revokeApproval which sets the allowance to zero. For batch revocation, the tool calls batchRevoke with an array of spender addresses, which revokes all specified approvals in a single atomic transaction. The tool also reads revokeHistory to display past revocation events, providing a complete audit trail. Gas estimation uses the provider's fee data with a safety multiplier, and the tool validates that the user has sufficient balance before transaction submission.

WHAT IT CANNOT SEE

This tool cannot guarantee that the scheduled revocation will execute on time if network conditions change or if gas prices spike. It cannot detect if the token contract has been upgraded or modified with malicious logic. It cannot verify that the approval conditions are correctly evaluated off-chain or that the scheduler contract is secure. It cannot recover funds if the revocation transaction fails due to network issues or contract state changes. It cannot ensure that the revocation will prevent all unauthorized transfers if the approval was already used. It cannot verify that the spender is malicious or legitimate. It cannot provide security advice. It cannot detect if the approval has been used before revocation. It cannot guarantee that the revocation will be mined before the approval is exploited. It cannot verify off-chain scheduling conditions or legal terms.

PLEASE NOTE

This tool supports EVM-compatible chains only. It requires an active RPC connection and a wallet with signing capabilities. The tool does not custodial funds or private keys. Always verify spender addresses and condition parameters before scheduling. Scheduled revocations are not guaranteed—monitor your approvals regularly. Batch revocations are irreversible—ensure all spenders are correct. The tool is for informational and experimental use; you bear full responsibility for approval management decisions.