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The most complex part of web3, made simple.
All public blockchain transactions move through the mempool before confirmation. And the mempool is the root of transaction anxiety. Blocknative's suite of tools brings transparency to the mempool on Ethereum, Binance, Polygon, Fantom, xDai, and Bitcoin.
Protect your Web3 protocol and apps — the easy way.
Blocknative's suite of developer tools makes real-time mempool monitoring accessible to every builder.
Mempool API & SDK
Easily stream mempool events into your Dapp. Support for ETH, BSC, FTM, Matic, xDai, and BTC.
export const getTransaction = (transactionHash) => {
axios.post("https://api.blocknative.com/transaction",
{
apiKey: "key",
hash: transactionHash,
blockchain: "ethereum",
network: "main"
})
.then((response) => {
return (response.data)
})
.catch((error) => {
alert(error)
errorHandler(error)
})
}
USDT-ETH Uniswap
{
"status": "confirmed",
"monitorId": "GETH_1_F_PROD",
"monitorVersion": "0.82.2",
"timePending": "18769",
"blocksPending": 2,
"v": "0x26",
"r":"0x6a87323ebea105a7f2e8311294aea718a185f9f6d264c1f3b1f61082c4666076",
"s": "0x32511db119370e26893135d1e87e2cb2fdfe524aca4e8edb795ffdf3c353fc6f",
USDT-ETH Uniswap
{
"status": "confirmed",
"monitorId": "GETH_1_F_PROD",
"monitorVersion": "0.82.2",
"timePending": "18769",
"blocksPending": 2,
"pendingTimeStamp": "2021-04-29T16:43:07.754Z",
"pendingBlockNumber": 12336509,
"hash":
"0x85a508acceb3cc21b129affa3c47d8ab7aebf9dbaade58ff802d2239d5f9d46c",
"from": "0x977A553DCf6025C876375706F2B98818414910dA",
"to": "0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D",
"value": "0",
"gas": 197838,
"gasPrice": "104000000000",
"gasPriceGwei": 104,
"nonce": 2148,
"blockHash": "0x931e057c93e8b752fb2f2c35aa144bd8e1442000db923edc381360cf02a8d8fe",
"blockNumber": 12336511,
"transactionIndex": 49,
"v": "0x26",
"r":"0x6a87323ebea105a7f2e8311294aea718a185f9f6d264c1f3b1f61082c4666076",
"s": "0x32511db119370e26893135d1e87e2cb2fdfe524aca4e8edb795ffdf3c353fc6f",
USDT-ETH Uniswap
{
"status": "confirmed",
"monitorId": "GETH_1_F_PROD",
"monitorVersion": "0.82.2",
"timePending": "18769",
"blocksPending": 2,
"pendingTimeStamp": "2021-04-29T16:43:07.754Z",
"pendingBlockNumber": 12336509,
"hash":
"0x85a508acceb3cc21b129affa3c47d8ab7aebf9dbaade58ff802d2239d5f9d46c",
"from": "0x977A553DCf6025C876375706F2B98818414910dA",
"to": "0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D",
"value": "0",
"gas": 197838,
"gasPrice": "104000000000",
"gasPriceGwei": 104,
"nonce": 2148,
"blockHash": "0x931e057c93e8b752fb2f2c35aa144bd8e1442000db923edc381360cf02a8d8fe",
"blockNumber": 12336511,
"transactionIndex": 49,
"v": "0x26",
"r":"0x6a87323ebea105a7f2e8311294aea718a185f9f6d264c1f3b1f61082c4666076",
"s": "0x32511db119370e26893135d1e87e2cb2fdfe524aca4e8edb795ffdf3c353fc6f",
Power your trading strategies with real-time mempool data — the easy way.
Blocknative's global mempool platform constantly captures, normalizes, and enriches in-flight transaction data. So you get unmatched data coverage and sub-transaction resolution for Ethereum, Binance, xDai, and Bitcoin.
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Monitor HNY + xDAI on Honeyswap
Easily monitor HNY <> xDAI on Honeyswap with Mempool Explorer.
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Monitor USDT + ETH on Uniswap
Easily monitor all USDT <> ETH trades on Uniswap V2 and V3

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Monitor wBTC + ETH on Uniswap
Easily monitor all wBTC <> ETH trades on Uniswap V2 or V3 over $500 in value.
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Monitor USDC + ETH on Uniswap
Easily monitor all USDC + ETH liquidity pool activity on Uniswap V2 or V3
.png)
Monitor HNY + xDAI on Honeyswap
Easily monitor HNY <> xDAI on Honeyswap with Mempool Explorer.
.png)
.png)
Monitor USDT + ETH on Uniswap
Easily monitor all USDT <> ETH trades on Uniswap V2 and V3

.png)
Monitor wBTC + ETH on Uniswap
Easily monitor all wBTC <> ETH trades on Uniswap V2 or V3 over $500 in value.
-1.png)
.png)
Monitor USDC + ETH on Uniswap
Easily monitor all USDC + ETH liquidity pool activity on Uniswap V2 or V3
.png)
.png)
Monitor UNI + ETH on Uniswap
Easily monitor all UNI <> ETH failed transactions on Uniswap V2 or V3


Monitor CAKE on Pancakeswap
Easily monitor all CAKE trades in the Binance mempool
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Monitor AAVE+ ETH on Uniswap
Easily monitor all AAVE <> ETH trades over $500 on Uniswap V2 or V3
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.png)
Monitor LINK + ETH on Uniswap
Easily monitor all LINK <> ETH trades on Uniswap V2 or V3
.png)
.png)
Monitor UNI + ETH on Uniswap
Easily monitor all UNI <> ETH failed transactions on Uniswap V2 or V3


Monitor CAKE on Pancakeswap
Easily monitor all CAKE trades in the Binance mempool
.png)
.png)
Monitor AAVE+ ETH on Uniswap
Easily monitor all AAVE <> ETH trades over $500 on Uniswap V2 or V3
.png)
.png)
Monitor LINK + ETH on Uniswap
Easily monitor all LINK <> ETH trades on Uniswap V2 or V3
What others are saying
New from our blog
Join the hundreds of teams building with Blocknative
“The short seconds between when a blockchain transaction is submitted, and when it is final, is the most valuable and important moment in finance—and also the least understood. Blocknative is developing crucial infrastructure to monitor & manage blockchain transaction processing.”

Master the mempool today.
Blocknative's proven & powerful enterprise-grade infrastructure makes it easy for builders and traders to work with mempool data.