A token approval is permission you grant a contract to spend a specific token from your wallet. Every swap on a decentralized exchange needs one. The permission outlives the trade it was granted for, is often set to an unlimited amount, and stays live until you revoke it.
That is why a first swap of a new token asks for two signatures: one to approve, one to trade. The approval is standing state on the token contract, recording which spender you authorized and for how much. An unlimited approval lets that contract move your entire balance of that token at any point in the future, including tokens you acquire later. If the contract is later exploited, or was written to drain approvals from the start, the permission you granted is the open door, and no further signature is needed.
Revoking sets the allowance back to zero. It is a transaction like any other, so it costs gas, and it applies to one token and one spender at a time.
Approvals are wallet-side state rather than token-page state, so they do not render on a token page — they live on the token contracts you have used, readable through the chain explorer or an approval checker. The step-by-step walkthrough is revoke token approvals on Robinhood Chain, the habit that prevents most of the damage is in how to buy tokens safely, and the reason it is your job at all is non-custodial ownership.
Frequently asked questions
Does revoking an approval get my tokens back?
No. Revoking sets a spender's allowance to zero, which stops future transfers by that contract. It cannot reverse transfers that already happened, because on-chain transactions are final. Revoking is a preventative step for tokens still sitting in your wallet, and it is worth doing on old approvals to contracts you no longer use.
How to revoke token approvals on Robinhood Chain
Revoke token approvals on Robinhood Chain by setting a spender's allowance to zero. How approvals work, why old ones bite, and the five steps to clear them.
Read nextHow to buy tokens safely on Robinhood Chain
Buy tokens on Robinhood Chain with a wallet, ETH for gas and a swap. The three checks to run first, how to set slippage, and what a lock really proves.
