Bridge Daily Limit Configuration Tool

WHAT IT DOES

This tool enables bridge administrators and security operators to configure daily limits on bridge transactions. Daily limits are a critical security feature that caps the total value that can be bridged in a single day, mitigating risk in case of exploits, compromised keys, or unexpected volume spikes. It connects to your wallet and reads the bridge contract address, current daily limit, current daily usage, remaining limit, limit configuration history, and timestamps. The tool signs and submits transactions to configure bridge daily limits, update limit parameters, adjust usage caps, record limit metadata, and emit limit events.

HOW TO USE

1. Connect your wallet using the wallet bridge (supports MetaMask, WalletConnect, and other EVM-compatible wallets).

2. Select the target network that matches your bridge contract deployment.

3. Enter the bridge contract address and click "load contract" to initialize the connection.

4. Click "fetch limit status" to retrieve the current daily limit, current daily usage, remaining limit, and limit configuration history.

5. Review the current limit and usage — this shows how much of the daily limit has been consumed.

6. Enter the new daily limit (in native token) you wish to set.

7. Click "validate limit" to verify that the new limit is valid and check if it's below current usage.

8. Click "check limit history" to view the complete history of limit configurations.

9. Review the current limit, new limit, and remaining limit before executing.

10. Click "set daily limit" to sign and submit the transaction that updates the bridge's daily limit.

TECHNICAL MECHANISM

The tool uses ethers.js v5.7.2 to interact with any EVM-compatible bridge contract that implements a standard limit interface (getDailyLimit() view returns (uint256), getDailyUsage() view returns (uint256), getRemainingLimit() view returns (uint256), setDailyLimit(uint256) external, getLimitHistory(address) view). The getDailyLimit view returns the current cap, while getDailyUsage returns the total value bridged so far today. The getRemainingLimit view calculates the remaining capacity (limit - usage). The setDailyLimit function updates the cap, validating that the caller has the appropriate permissions (typically an admin or security role). The contract tracks limit changes in a history mapping, storing timestamps and new limit values for audit purposes. The daily usage resets periodically based on the contract's time tracking. Transaction handling follows EIP-1559 gas price calculations using receipt.effectiveGasPrice for accurate cost reporting. Limit metadata is recorded both in the contract's history and locally for the user's reference.

WHAT IT CANNOT SEE

This tool operates purely on-chain and cannot verify off-chain bridge usage — it does not track transactions that occur off-chain or through other interfaces. It cannot detect limit bypass attempts — the tool cannot identify users trying to circumvent the limit through multiple transactions or addresses. It cannot ensure limit enforcement — the tool relies on the contract's implementation and does not independently verify that the limit is enforced. It cannot validate usage accuracy — the tool does not confirm that the usage tracking is correct or that all bridge transactions are counted. The tool also cannot guarantee that limits are respected — it depends on the contract's correct implementation and the administrator's diligence.

PLEASE NOTE

This tool works exclusively with EVM-compatible blockchain networks (Ethereum, Polygon, Arbitrum, Optimism, Base, etc.). It requires the bridge contract to implement the limit interface described above. All transactions incur gas fees paid by the connected wallet. The tool maintains no persistent storage — all state is refreshed from the blockchain on each session. Setting a daily limit is a significant security decision — ensure the limit is appropriate for your bridge's expected usage. Setting the limit too low may disrupt legitimate transactions, while setting it too high may expose the bridge to risk. Consider the bridge's typical daily volume and security requirements when configuring the limit.