To sell crypto using MetaMask, first ensure your tokens are visible and hold value. Not all tokens can be sold immediately; many airdropped tokens lack liquidity. You may need to swap your tokens for a more liquid asset like ETH or USDC, and bridge them to the Ethereum mainnet if they are on another blockchain. To sell, open the MetaMask portfolio, choose 'Sell', and select your region and fiat currency. You’ll have to provide a KYC verification through third-party providers. Alternatively, you can use centralized exchanges like Coinbase for selling, or peer-to-peer platforms with minimal KYC like LocalCoinSwap and Bisq. Cryptocurrency ATMs are another option but may come with high fees. It’s also crucial to keep records for tax purposes since selling crypto can trigger capital gains tax.

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