small puddle, big ideas

Swap on Monad Testnet,
through core pools.

PuddleSwap is a static, no-backend DEX with star routing through USDC, USDT, and WMON. No signup. No KYC. No servers between you and the chain.

Launch App Read the docs
~ why puddleswap ~

A DEX shaped for testnet.

Forked from Uniswap V2, deployed on Monad Testnet, wrapped in a frontend with no backend at all.

Star routing

Every swap checks paths through USDC, USDT, and WMON in one batched RPC call. Any token with a pool against a core token is reachable from any other. The best quote wins.

No backend

The frontend talks to Monad testnet directly via RPC. There is no app backend, no KYC, and no data collection. Your wallet sends the transaction.

Permissionless pools

Pick any two ERC-20s, seed initial liquidity, get LP tokens. Anyone can register a token on-chain. There is a 7-day cooldown and basic anti-spam.

~ three steps ~

Swap in seconds.

Open the app, connect any injected wallet, and go. No account to create.

1

Connect to Monad Testnet

Any injected wallet works: MetaMask, Rabby, others. The app prompts to switch to chain 10143 if needed.

2

Pick tokens & amount

PuddleSwap quotes every route through USDC, USDT, and WMON in a single batched call. Quotes refresh every 6 seconds.

3

Confirm the swap

Stock Uniswap V2 pairs under the hood. Slippage is 1% by default. Test MON pays gas and is free from faucets.

~ learn ~

Short guides.

Notes on the parts behind a Monad testnet DEX.

Monad Testnet Chain ID 10143, the execution layer, and where to get test MON. Read Star routing How any pair routes through USDC, USDT, or WMON, and why that works. Read WMON Wrapped MON, why you need it, and when the UI wraps for you automatically. Read

Ready to swap on Monad?

Unaudited software, testnet only. Testnet tokens have no real value. The usual DeFi warnings apply. Use at your own risk.

Open app.puddleswap.org