ArbSwap lets you buy one crypto asset with another from your own wallet on Arbitrum, without sending funds to a centralized exchange. The flow is simple: connect a wallet, choose the token to spend, choose the token to receive, review the trade, and confirm the swap on ArbSwap.
The detail that matters is this: ArbSwap is not a fiat checkout and not an aggregator. It is a decentralized exchange, or DEX, built as an automated market maker. When you "buy crypto" there, you are swapping through liquidity pools on-chain.
That gives you control, but it also puts the checking on you. You need the right network, enough ETH for gas, the real token contract, and sensible slippage.
Before you start, have these ready:
If your funds are on another chain, bridge to Arbitrum first. Do not assume a token is usable just because the symbol looks familiar. The swap only works with assets available on the network you are using.
ArbSwap uses liquidity pools rather than a traditional order book. A pool holds a trading pair, and the AMM prices your trade based on the pool's current balance. When you swap, you send one token into the pool and receive the other token out.
This is why liquidity matters. A deep pool can usually handle a normal trade with less price impact. A thin pool may give you a worse result, especially if your order is large compared with the available liquidity.
ArbSwap can also be used for providing liquidity and farming, but those are separate actions. Buying a token is a swap. Providing liquidity means depositing two assets, receiving LP tokens, and taking on impermanent-loss risk while potentially earning LP fees.
Start with the asset you plan to spend. That might be ETH, a stablecoin, or another token already in your wallet. The important part is that it must be on Arbitrum.
Keep some ETH on Arbitrum for gas. Arbitrum gas fees are usually lower than Ethereum mainnet fees, but they are not zero. If you have tokens but no ETH for gas, your wallet cannot approve or confirm the swap.