Uniswap DEX User Guide: Token Swaps and Liquidity Provision Operations

Uniswap Introduction and Core Mechanisms

Uniswap is one of the most important decentralized exchange (DEX) protocols in the crypto world, allowing users to directly perform token swaps and provide liquidity on the blockchain via smart contracts, without relying on traditional centralized trading platforms. At its core, Uniswap uses an Automated Market Maker (AMM) model, facilitating trades through liquidity pools rather than order books, offering users high decentralization and censorship resistance.

Since its launch in 2018, Uniswap has undergone several iterations:

• Uniswap V1 (2018): First validated the feasibility of the AMM model, where each pool had to include ETH.
• Uniswap V2 (2020): Introduced trading for any ERC-20 token pair, greatly expanding trading possibilities.
• Uniswap V3 (2021): Introduced "concentrated liquidity," allowing liquidity providers (LPs) to provide liquidity within specific price ranges, significantly improving capital efficiency, and introduced multi-fee pools and NFT-based LP positions.
• Uniswap V4 (Released in January 2025): Introduced "hooks" and a singleton pool manager, aiming to further reduce transaction fees and enhance protocol flexibility and customizability.

Uniswap was initially deployed on the Ethereum mainnet and has since expanded to support multiple mainstream EVM-compatible blockchain networks, including Polygon, Optimism, Base, BNB Chain, and Arbitrum. Its governance token, UNI, grants holders the right to vote on the future direction of the protocol.

Uniswap Usage Guide

Using Uniswap for token swaps or providing liquidity primarily involves the following steps:

1. Prepare a Cryptocurrency Wallet

First, you need a non-custodial cryptocurrency wallet that supports Ethereum and other EVM-compatible chains. Popular choices include MetaMask, Uniswap Wallet, Coinbase Wallet, or Trust Wallet. Ensure your wallet is correctly set up and your seed phrase is backed up. Additionally, to pay for network Gas fees required for transactions, you will need a small amount of the native token of the respective network in your wallet (e.g., ETH for transactions on the Ethereum network, MATIC for the Polygon network).

2. Connect Wallet to Uniswap

Visit the official Uniswap website (uniswap.org), click "Launch App" to enter the trading interface. Find and click the "Connect Wallet" button in the upper right corner of the page. Select your wallet type from the dropdown list (e.g., MetaMask), then authorize the connection within your wallet interface. The Uniswap protocol only gains permission to interact with your wallet; it cannot directly control your funds.

3. Token Swap

After connecting your wallet, you will default to the "Swap" interface. This is one of Uniswap's most frequently used features.

1. Select Tokens and Amount: In the "From" field, select the token you wish to sell and enter the amount. In the "To" field, select the token you wish to receive; the system will automatically calculate the amount you will get. It is recommended to search by the token's contract address to ensure you select the correct token and avoid fake token risks.
2. Approve Token (First Transaction): If this is your first time trading a specific token, you may need to perform an "Approve" operation first, allowing the Uniswap protocol to access that token in your wallet. This operation incurs a Gas fee.
3. Confirm Swap: Click the "Swap" button to preview transaction details, including the exchange rate, estimated Gas fee, and slippage tolerance. Slippage refers to the potential difference between the expected price and the actual execution price due to market volatility or insufficient liquidity.
4. Wallet Confirmation: Confirm the transaction in your wallet. After the transaction is submitted to the blockchain, wait for network confirmation. Upon successful transaction, a "Swap success" message will be displayed.

4. Provide Liquidity (Add Liquidity)

Providing liquidity is another core function of Uniswap, allowing users to earn trading fees by injecting two tokens into a liquidity pool.

1. Enter Pool Interface: In the Uniswap interface, select the "Pool" or "Liquidity" option, then click "New Position" or "Add Liquidity."
2. Select Token Pair and Amount: Choose the token pair for which you wish to provide liquidity (e.g., ETH-USDT) and enter the corresponding amounts. You typically need to provide equivalent values of both tokens.
3. Set Price Range and Fee Tier (Uniswap V3): For Uniswap V3, you also need to set the price range for providing liquidity and the fee tier (typically options like 0.05%, 0.3%, 1%), which helps optimize capital efficiency and potential returns.
4. Confirm and Authorize: Confirm the transaction details and authorize the Uniswap protocol to access your tokens. Approve the transaction in your wallet.
5. Receive LP Tokens: After successfully providing liquidity, you will receive LP tokens representing your share of the liquidity (ERC-20 tokens for V2, ERC-721 NFTs for V3). You can remove liquidity at any time using these LP tokens.

Fees, Risks, and Considerations

When using Uniswap, keep the following points in mind:

• Gas Fees: Any operation on the Ethereum network requires Gas fees, which vary depending on network congestion. On other EVM-compatible chains, Gas fees are usually lower.
• Slippage: Large transactions or token pairs with low liquidity may result in higher slippage, affecting the actual execution price. Users can adjust slippage tolerance in the settings.
• Impermanent Loss: This is the primary risk faced by liquidity providers. When the price of the token pair you provided changes, the total value of tokens you withdraw may be less than the value you would have had if you simply held those tokens.
• Fake Token Risk: Due to Uniswap's open nature, anyone can create tokens on it. Users must verify the token's contract address and project information before trading to beware of fake token scams.
• DEX vs. CEX Comparison: Compared to Centralized Exchanges (CEX), DEXs like Uniswap do not require KYC, and users maintain full control of their asset private keys, offering higher security. However, CEXs typically offer faster transaction speeds and support more financial products.

To better understand market dynamics and project information, you can check the latest prices and project details on professional market information platforms like Svmuu to ensure transaction security.