CowSwap
Swap any ERC-20 token at the finest available rate — with MEV protection baked in from day one, not tacked on as an afterthought.
Begin TradingNo registration required. Just connect your wallet and trade.
Why CowSwap
Most swaps on Ethereum end up costing more than the displayed price — MEV bots siphon value before your transaction confirms. The CowSwap platform was engineered to put a stop to that. Here is what sets it apart:
Genuine MEV protection
Sandwich attacks and front-running are stopped at the architectural level. Solvers compete off-chain; your order only reaches the blockchain once the deal is locked in. You keep every bit of what you earn.
Peer-to-peer order matching
When two traders seek opposite sides of the same pair, CowSwap's protocol links them directly. No AMM fees, no pool-depth slippage. It simply works.
Unified liquidity sourcing
Uniswap v3, Curve, Balancer, and dozens of others — all evaluated in every batch. You receive one quote that reflects the entire on-chain market, not a single pool.
Gas abstraction
Transaction fees come out of the token you are selling. You do not need ETH on hand to cover EIP-1559 base fees — a genuine relief for anyone new to the space.
How it works
The CowSwap settlement process differs significantly from a typical AMM. Here is the condensed version — each step happens quickly, usually within a single Ethereum block.
You sign an off-chain order specifying your sell token, your buy token, and the minimum price you will accept. Nothing touches the blockchain yet.
A network of independent solvers — specialized routing engines — receive your order and compete to find the best fill. They scan Polygon-compatible routes, Gnosis Chain bridges, and Ethereum mainnet pools all at once.
Orders from multiple traders are bundled into a single on-chain transaction. CoW (Coincidence of Wants) matches are handled first; the remaining volume flows to AMMs. One batch, reduced overall gas.
If solvers uncover a price better than your stated limit, the improvement comes back to you — not to the protocol. The team behind CowSwap calls this "Coincidence of Wants surplus."
That's it. Your wallet reflects the updated balance. You can verify the settlement on Etherscan or through the CowSwap explorer. Still curious? Browse the full Q&A.
Key features
Limit orders
Name your price and step away. Your order stays active until the market reaches your target or the expiry lapses — no gas wasted on transactions that would fail anyway.
TWAP orders
Dollar-cost average into any token over hours or days. The protocol divides your position into timed segments, filling each one at the best available rate within its window.
Token approval management
Partial approvals let you limit exposure. You decide the precise amount a contract may access — a sensible safeguard most DEXs still neglect to offer.
Custom hooks
Power users can attach pre- and post-swap hooks to their orders. Chain a swap with a lending deposit or an NFT purchase in one atomic transaction.
Referral programme
Share a referral link and earn a portion of the fees generated by traders you introduce. The reward system is built directly into the swap UI — look for the Refer button at the top.
Multi-network support
Trade on Ethereum mainnet and Gnosis Chain today. The solver framework powering CowSwap is built to scale — Forge-based testing has already validated the contracts across several testnets.
Open-source contracts
Every contract is verified on-chain and the code lives on GitHub. You can read exactly what happens to your tokens — no opaque black boxes.
CowSwap by the numbers
These figures are approximate and capture cumulative activity since the protocol launched in 2021. They shift daily — almost always higher.
Curious about the underlying technology? Explore CowSwap's protocol design.
FAQ
Concise answers to the most common questions. For a deeper dive, head to the full Q&A page.
How do I start trading on CowSwap?
Connect any ERC-20 compatible wallet, choose your sell and buy tokens, enter the amount, and confirm the swap. CowSwap takes care of the rest — routing, MEV protection, and settlement — with no extra steps required from you.
What is CowSwap and how does it differ from other DEXs?
CowSwap is a meta-DEX aggregator built on CoW Protocol. Rather than routing trades directly to AMMs, it batches orders and settles them through a competitive solver network, frequently matching trades peer-to-peer and cutting unnecessary gas costs from EIP-1559 transactions.
Is CowSwap safe and has it been audited?
Yes. The smart contracts have been reviewed by several independent security firms. The protocol has processed billions in volume since 2021 without a contract-level exploit. DeFi always carries inherent risk — consult the official docs and trade responsibly.
Can I use CowSwap if I am on Polygon or another L2?
CowSwap currently supports Ethereum mainnet and Gnosis Chain. The solver architecture is built to accommodate additional networks over time. For now, bridge your tokens to a supported chain and you are ready to trade.
Why should I choose CowSwap over a standard DEX aggregator?
Most aggregators still leave you open to sandwich attacks. CowSwap's protocol uses batch auctions and Coincidence of Wants matching — solvers vie for the best price while front-running is blocked at the structural level. You get genuine protection, not just a marketing claim.
What tokens and networks does CowSwap support?
Thousands of ERC-20 tokens on Ethereum mainnet and Gnosis Chain. Liquidity is sourced automatically from Uniswap, Curve, Balancer, and beyond. If a token has on-chain liquidity anywhere, CowSwap can usually track it down. Learn more about decentralized exchanges on Wikipedia.