Cross-Chain Airdrop Claim Bridger

WHAT IT DOES

Cross-Chain Airdrop Claim Bridger lets you claim tokens from an airdrop contract on one chain and bridge them to another chain in a single atomic transaction. Instead of claiming tokens on the source chain, waiting for confirmation, then initiating a separate bridge transaction, the tool combines both steps into one batched transaction using multicall. This saves time, reduces gas costs, and eliminates the risk of forgetting to bridge after claiming. The tool checks your eligibility and claimable amount on the source chain, then submits a claim + bridge transaction that sends the claimed tokens to your wallet on the destination chain.

HOW TO USE

Connect your EVM wallet to the source chain (where the airdrop is available). Enter the airdrop claim contract address, the bridge contract address, the destination chain ID (e.g., 42161 for Arbitrum), and optionally a destination address (defaults to your connected wallet). Click "Check eligibility" to verify your claimable amount and whether you have already claimed. Review the displayed details, then click "Claim & bridge" to execute the combined transaction. The tool claims the tokens and bridges them to the destination chain in one batched transaction, with progress feedback along the way.

TECHNICAL MECHANISM

The tool uses Multicall3 to aggregate two contract calls into a single transaction: first, claim() on the airdrop contract to receive the tokens; second, bridgeTo() on the bridge contract to send the claimed tokens to the destination chain. It reads the token address from the claim contract and the claimable amount via claimable() to ensure the bridge call uses the correct token and amount. The bridge function is assumed to take (token, amount, destChainId, destAddress) as parameters. The tool uses receipt.effectiveGasPrice for accurate gas reporting and provides progress feedback during execution. The entire operation is atomic—if either call fails, the transaction reverts and nothing is lost.

WHAT IT CANNOT SEE

This tool cannot bridge tokens that are not supported by the bridge contract—the bridge must support the specific token and destination chain combination. It relies on the bridge contract being deployed and funded with the necessary liquidity. The tool does not account for bridging delays (e.g., message passing time) or failed bridge transactions (e.g., if the bridge relayer fails). It only works with EVM-compatible chains and bridge contracts that implement a compatible interface. The tool also does not handle bridging delays or claim deadlines—ensure the airdrop claim period and bridge availability are still active before executing.

PLEASE NOTE

The combined transaction must be submitted on the source chain. Gas fees for both the claim and the bridge are paid in the source chain's native token. The bridge contract may charge an additional fee or require a minimum bridge amount—check the bridge contract details before executing. The destination address defaults to your connected wallet address, but you can override it with any EVM address. This tool is for EVM chains only and does not support non-EVM networks.