Private mempool on Polygon PoS: protect swaps & pool creation
How transactions on Polygon PoS can be seen by bots before they land — and what BaniPool does to protect your swaps, Zaps and pool creation.
Sandwiches, front-running and snipers
Sandwich: a bot buys right before your swap (pushing the price up) and sells right after — you get the worst price your slippage allows. Sniper: a bot buys into a new pool before its creator finishes seeding it. Both require seeing your transaction before it lands.
Polygon PoS for liquidity providers
Polygon PoS is an EVM network with very cheap gas, popular for stablecoins and payments. BaniPool supports Uniswap v2, v3 and v4 pools on Polygon. Gas is paid in POL and is usually under a cent.
The mempool on Polygon PoS
Polygon PoS has a public mempool, so loose-slippage swaps can be sandwiched. There is no documented public private-RPC service for Polygon yet, so BaniPool sends Polygon transactions normally — keep slippage tight.
Honest limits
A private mempool hides a transaction before it lands, not after: once confirmed, the transaction and pool are public on-chain. Block producers (validators / builders) still see it. Sensible slippage is still needed.
DEXes on Polygon PoS supported by BaniPool
Top Polygon PoS pools (TVL)
| Pool | DEX | Fee | TVL | Fee APR |
|---|---|---|---|---|
| USDC / WETH | Uniswap v3 | 0.05% | $584.3K | 15.4% |
| USDC / WETH | Uniswap v3 | 0.05% | $347.9K | 23.5% |
| USDC / USDC | Uniswap v3 | 0.01% | $282.2K | 5.9% |
| WPOL / USDC | Uniswap v3 | 0.05% | $161.4K | 20.9% |
| WPOL / USDC | Uniswap v3 | 0.05% | $157.3K | 8.2% |
| WPOL / WETH | Uniswap v3 | 0.3% | $139.4K | 9.7% |
| WPOL / WETH | Uniswap v3 | 0.05% | $129.2K | 39.4% |
| POL / WETH | Uniswap v4 | 0.3% | $109.9K | 14.9% |
| USDC / WETH | Uniswap v3 | 0.3% | $97.3K | 10.7% |
| USDC / WETH | Uniswap v4 | 0.05% | $70.2K | 4.8% |
FAQ
Does Polygon PoS have a public mempool?
Is the transaction really hidden?
Hidden from the public until it lands. After that it is visible like any other transaction on the explorer — what is prevented is bots reacting before your transaction executes.
How much does it cost?
On Solana just a small Jito tip per transaction (capped at 0.0001–0.002 SOL). On Ethereum & BNB the private RPCs (Flashbots Protect, MEV Blocker, PancakeSwap MEV Guard, BlockRazor) are free — you only pay normal gas. BaniPool adds no fee for this feature.