Cross-Chain Limit Order Executor

WHAT IT DOES

Cross-Chain Limit Order Executor is a DeFi tool that lets you place limit orders between different EVM chains in a single atomic operation. A limit order allows you to specify the exact price at which you want to buy or sell tokens — the order will only execute if the market reaches that price. This tool reads your token balances, swap rates, and order book states, then constructs and submits a cross-chain limit order transaction. It provides a preview of the order type, amount, limit price, destination chain, and expiry before you execute, enabling precise and transparent cross-chain trading.

HOW TO USE

Connect your EVM wallet via the BGWallet bridge. Enter the bridge contract address, the source token address, and the destination token address. Select the order type — Buy (pay source, receive dest) or Sell (pay dest, receive source). Enter the order amount, the limit price (destination token per source token), the destination chain ID, and the expiry in blocks. Click "Preview Order" to see the bridge contract, source and destination tokens, order type, amount, limit price, destination chain, and estimated gas cost. Review the details carefully — limit orders are only filled if the market reaches your specified price. Click "Place Order" to sign and broadcast the transaction. The tool provides a transaction hash for tracking and shows the order status.

TECHNICAL MECHANISM

The tool reads the token balance from the source token contract using `balanceOf(address)`. It fetches the current swap rate from the bridge contract using view functions like `getSwapRate(sourceToken, destToken, amount, destinationChain)` or from an off-chain price feed integrated with the bridge. When executing, the tool first approves the bridge contract to spend the source tokens (if not already approved), then calls the bridge contract's limit order function — typically `createLimitOrder` or `placeCrossChainLimitOrder` — with the source token, destination token, amount, limit price, destination chain, and expiry. The bridge contract then creates the order on the destination chain. The entire operation is atomic — if any step fails, the transaction reverts. The tool estimates gas using `estimateGas` and displays the estimated cost before execution.

WHAT IT CANNOT SEE

This tool cannot guarantee that the limit order will be filled at the specified price if the market moves unfavorably or if the order expires before being executed. Limit orders are conditional — they only execute if the market reaches your specified price. The tool also cannot predict changes to the bridge network, such as congestion or delays, that may affect the order placement time. Additionally, the tool cannot verify that the destination token is supported on the destination chain or that the bridge will accept the order. Always monitor market conditions and consider setting realistic limit prices. This tool is an aid for cross-chain limit orders, not a guarantee that the order will be filled.

PLEASE NOTE

EVM chains only. This tool relies on the BGWallet connector and will not function on Solana, Tron, Starknet, SUI, TON, Aptos, Bitcoin, Cosmos, or XRP. The user is responsible for ensuring the supplied bridge contract address is correct and that the contract supports limit order functions. The source token must be approved for transfer to the bridge contract — the tool handles approval if needed. Always verify the limit price and expiry before executing.