Arbswap: What to Verify Before Approving a Wallet
The first approval is the point at which a wallet can grant a contract permission to move a token, so it should not be treated as a routine sign-in. The Arbswap homepage is the page to inspect before connecting: confirm the domain, network, contract address, transaction type, and spending limit before a signature is submitted.
What to Check Before Connecting to Arbswap
Connecting a wallet usually exposes only the public address; it does not by itself authorize a transfer. The important distinction is the next prompt. A “Sign” request may be an off-chain message, while an “Approve,” “Permit,” “Set Approval For All,” or transaction confirmation can create an on-chain permission or move assets immediately.
Read the wallet prompt, not the button on the webpage. The wallet is the final interface that shows which network, contract, method, asset, amount, and gas fee are actually involved.
5 fields that should match before a transaction
- Domain: The browser address must be exactly the intended domain, with no extra words, substituted letters, or lookalike top-level domain.
- Network: The wallet’s selected chain must match the action. A token balance on Arbitrum, Ethereum, Base, or another EVM network is not interchangeable.
- Contract address: Compare the address in the wallet prompt with an address obtained independently from the project’s official, established channels. A token symbol and logo are not proof.
- Method: Identify whether the request is
approve,permit,swap,transfer, orsetApprovalForAll. These do materially different things. - Allowance: Check both the token and the amount. “Unlimited” or a maximum integer approval remains usable until it is reduced or revoked.
Approve is not the same as swap
An ERC-20 token is a fungible-token standard whose approve function lets an owner set how much a third-party address may spend. A swap transaction normally needs either a prior allowance or a signature-based alternative such as Permit. The approval gives the designated spender capacity; the swap is the separate action that uses it.
That distinction explains why a familiar trading screen can still produce a request that deserves scrutiny. An approval for a modest, one-time amount limits the exposure differently from an approval for the wallet’s entire balance. It also explains why a failed swap does not necessarily mean the approval failed: the allowance may already be recorded on-chain even when the later trade reverts.
“Set Approval For All” is a different warning
setApprovalForAll is commonly associated with NFT standards and grants an operator authority over every eligible item in that collection or contract scope. It is not the normal ERC-20 allowance prompt. If the intended action is swapping a standard fungible token, an unexpected “approval for all” prompt is a reason to stop and identify the contract before continuing.
3 failure states worth recognizing
| Wallet result | What it usually means | What to do next |
|---|---|---|
| Transaction rejected | The user declined it or the wallet could not submit it. | No approval or swap should be assumed; check the activity feed. |
| Transaction reverted | The chain executed the call but a contract condition failed. | Read the error, then check whether a separate approval succeeded earlier. |
| Transaction pending | It has been broadcast but is not final. | Do not repeat the action blindly; locate the transaction hash in the wallet. |
After the trade: remove permissions that no longer serve a purpose
Once the intended action is complete, review active token allowances from a wallet or block-explorer approval interface and revoke any that are no longer needed. Revocation is itself an on-chain transaction and costs gas, but it removes a standing permission rather than relying on the spender never to use it.
The practical rule is simple: connect only after the domain checks out, approve only the contract and amount that the wallet displays, and treat an unfamiliar method or unlimited allowance as a stop condition until it is independently explained.