How to Connect Your Wallet to Across Bridge Safely
Across Bridge is useful when you want to move crypto from one chain to another without turning a simple transfer into a guessing game, and the safest starting point is connecting your wallet carefully through Across Bridge. A rushed wallet connection is where many avoidable mistakes begin: the wrong network, the wrong token, a fake front end, or a transaction you approve without reading.
This guide walks through the practical side of connecting a wallet safely before you bridge. It is written for a smart beginner who may already use MetaMask, Ethereum, Arbitrum, Optimism, Base, Polygon, zkSync, or other L2s, but wants a clean process instead of clicking around and hoping.
Across is an intents-based cross-chain bridge. That means you deposit funds on the source chain, a relayer quickly fills the request on the destination chain, and the relayer is reimbursed later after optimistic settlement. The user experience can feel fast because the destination-side fill does not have to wait for every behind-the-scenes settlement step to finish first. Across is a bridge, not a swap AMM, and ACX is its token.
What You'll Need Before Connecting
Have these ready before you open the app or approve anything:
- A non-custodial wallet, such as MetaMask.
- Access to the source chain that currently holds your token.
- The destination chain where you want the funds to arrive.
- A little crypto for gas on the source chain.
- Enough attention to check names, networks, token symbols, and fees before signing.
If you are bridging from Ethereum to an L2 like Arbitrum, Optimism, Base, Polygon, or zkSync, make sure your wallet can show both networks. You do not always need gas on the destination chain to receive funds, but you may need it later to move, swap, or use those funds once they arrive. That is a practical point many new users miss.
Step 1: Open the Correct Across Bridge Front End
Start with the front end you intend to use and slow down for ten seconds before connecting. Check the page, the spelling, and the wallet prompt. Unofficial front ends and copied interfaces are one of the easiest ways to get pushed into a bad approval.
Do not search randomly and click the first ad-looking result. Use the address you trust, a saved bookmark, or a source you already know is legitimate. This matters because wallet connection itself is not usually the dangerous part; the danger is connecting to the wrong site and then approving something you did not mean to approve.
Step 2: Connect Your Wallet
Click the wallet connection button and choose your wallet, such as MetaMask. Your wallet will ask whether you want to connect the site to one or more accounts.
Before approving the connection, check two things:
- The wallet prompt shows the site you expected.
- The selected account is the account that holds the funds you plan to bridge.
Connecting lets the app read your public wallet address and request transactions. It does not automatically move funds. The transfer only happens after you approve or sign the actual bridge transaction. Still, use a dedicated wallet or a clean account if you are cautious, especially when testing a bridge for the first time.
Step 3: Choose the Source and Destination Chains
Pick the source chain first. This is where your funds currently live. Then choose the destination chain, which is where you want the funds to arrive.
For example, a user might bridge from Ethereum to Base, or from Arbitrum to Optimism. That is only an illustration, not a recommendation or a promise about cost or speed. The right route depends on where your token is, where you need it, and what gas and bridge fees look like at the time.
This is the step where a lot of mistakes happen. Base and Ethereum are not the same chain. Arbitrum and Optimism are not the same chain. Polygon and zkSync are not interchangeable. If your funds arrive on the wrong destination chain, you may still control them, but moving them again can cost extra gas and create more chances for error.
Step 4: Select the Token and Amount
Choose the token you want to bridge and enter the amount. Read the token symbol and chain carefully. A token can exist on several networks, but that does not mean every version has the same liquidity, support, or usefulness in the app you plan to use next.
Leave room for gas. If your wallet balance is 0.100 ETH on the source chain, do not try to bridge exactly 0.100 ETH. You need some remaining balance to pay for the transaction. The exact gas cost changes with network conditions, so treat any number you see in examples as illustrative only.
Across may show a bridge fee or route cost. Your wallet may also show source-chain gas. In some cases, you should think about destination-chain gas too, because receiving funds is only useful if you can actually use them afterward.
Step 5: Review the Transfer Before You Sign
Before you approve the bridge transaction, review the full path:
- Sending account.
- Source chain.
- Destination chain.
- Token.
- Amount.
- Estimated fees.
- Expected destination output.
If something looks different from what you intended, cancel and start again. Canceling a wallet prompt is normal. It is much cheaper to pause than to bridge to the wrong place.
When everything looks right, approve the transaction in your wallet. For a token transfer, you may first need to approve token spending, then confirm the actual bridge transaction. Read both prompts. A token approval and a bridge deposit are different actions.
Step 6: Understand What Happens After You Confirm
After you submit the transaction, your deposit is made on the source chain. Across uses relayers to fill the request on the destination chain. Later, the relayer is reimbursed through optimistic settlement.
That is the core reason Across transfers can feel quick to users. You are not using a traditional lock-and-mint bridge flow where the user experience may depend more directly on slow finality or canonical bridge timing. You are also not trading through a swap AMM. You are asking for a cross-chain transfer to be filled, with relayers and liquidity doing important work behind the scenes.
For a safe starting point, connect your wallet through Across Bridge, choose the route deliberately, and treat the review screen as the place where you catch mistakes before real money moves.
Common Mistakes That Cost Users Money
The biggest safety improvements are simple, but they require discipline.
Wrong destination chain: If you need funds on Optimism, do not send them to Base because the names both sound familiar. Check the destination chain twice.
Wrong token: Make sure the token selected in the bridge is the asset you actually want to move. Similar symbols and wrapped assets can confuse beginners.
Ignoring gas: A bridge fee is not the only cost. You may pay source-chain gas, and you may need destination-chain gas later. If the remaining balance is too low, you can strand yourself temporarily.
Approving without reading: Wallet pop-ups can become routine, but they are the final checkpoint. Confirm that the action matches what you are trying to do.
Using unofficial front ends: A fake interface can imitate real branding and push malicious approvals. Use a trusted route to the app and avoid random links in social posts, ads, or direct messages.
Assuming every bridge works the same way: A canonical bridge, a lock-and-mint bridge, a liquidity network, and an intents-based bridge can have different mechanics and risk profiles. Across uses an intents-based model with relayers and optimistic settlement, so understand that flow at a basic level before relying on it.
Bridge Risk, in Plain English
Bridging is useful, but it is not risk-free. Smart contracts can have bugs. Fees can change. Network conditions can make a transfer more expensive than expected. User mistakes, especially wrong-chain and wrong-token mistakes, can be painful.
The practical answer is not fear. It is process. Use the correct front end, start with a small transfer if you are new, check every chain and token field, and keep enough gas for the transaction you are about to make.
Connect Carefully, Then Bridge
Connecting your wallet to Across safely comes down to a few habits: use the correct site, select the right account, choose the source and destination chains deliberately, review fees, and read the wallet prompt before signing.
Once those checks are in place, Across Bridge gives you a direct way to move funds across supported chains using an intents-based bridge design where relayers fill destination transfers quickly and settle later through the protocol.