If you are performing swaps directly on a different platform or another DEX, MetaMask may provide some general orientation or guidance, but it should not be considered definitive reach out to the support team or community for the exchange or platform where you are swapping for assistance. In other words, MetaMask provides support for the swaps that happen through the use of the MetaMask Swaps button. Our support articles are for MetaMask Swaps only.If you swap some tokens into your wallet, but don't see them (after a few minutes - remember, blockchain is fast, but it's not instantaneous), try adding the tokens manually. Custom tokens is what MetaMask calls tokens that aren't common or widespread enough to be in MetaMask's standard list of tokens, which are detected by default when you have Ethereum mainnet ( and a handful of other popular networks) selected as your network in MetaMask.This is why Swaps allows a little bit of a difference between the price you agree on and the final price, to ensure your transaction goes through - but not too much, in order to protect you from sudden spikes or drops. Given the highly liquid and fluctuating nature of decentralized finance and cryptocurrencies, prices can change from second to second. Slippage is the amount of change between the price you click on and the final transaction price that MetaMask Swaps will tolerate.Of course, there are other less malicious caveats: for example, some tokens you can acquire, but to gain the utility intended from them, you need to stake them on a specific platform. One of the novelties of cryptocurrencies and decentralized finance is their programmatic nature a token isn't necessarily a static asset it may have functions that can affect how it is used, or how it affects your wallet - like this, for example. Even if a token complies with the ERC-20 standard, you shouldn't buy or obtain a token without researching it first. MetaMask Swaps is currently available on: It's super convenient and straightforward, and drastically reduces the number of steps needed, and the amount of exposure to third-party smart contracts, in order to obtain tokens that interest you. MetaMask Swaps is a MetaMask feature that allows you to do exactly that: swap one cryptocurrency token for another (for more on ERC-20 tokens and the difference between these and NFTs, see our user guide ).
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