Introducing The Gas Platform Browser Extension Learn more

Know first.

Act first.

Blocknative powers transparency and profit for builders and traders alike. Our platform is the easy way to work with mempool data.

Join the hundreds of projects that depend on Blocknative.
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The most complex part of web3, made simple.

For Builders

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, xDai, and BTC.

Gas Platform API

Gas estimation for builders, by builders.

Simulation Platform API

Now you can know what will happen next.

Mempool Explorer

Easily create a data stream to monitor and act on transactions in real-time.

Onboard

The easiest way to support all of the top wallets.

Notify

Deliver real-time notifications to your users.

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",

API & SDK
Unlock the power of real-time mempool data.
gas-platform-illustration
Gas Platform
Get into the next block without overpaying.
Group 10533
Simulation Platform
Simulate every pending Ethereum transaction.
Mempool Explorer
Blockchain events before they happen
Onboard
Onboard
The quick and easy way to add multi-wallet support to your project.
1,734.94
Feature
Notify
In-line transaction notifications made easy.

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",

For Traders

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.

Group 42 (1) Group 43
Monitor HNY + xDAI on Honeyswap

Easily monitor HNY <> xDAI on Honeyswap with Mempool Explorer. 

Group 42 (2) Group 43 (1)
Monitor USDT + ETH on Uniswap

Easily monitor all USDT <> ETH trades on Uniswap V2 and V3

Page 1 Group 43 (1)
Monitor wBTC + ETH on Uniswap

Easily monitor all wBTC <> ETH trades on Uniswap V2 or V3 over $500 in value.

Group 42 (1)-1 Group 43 (1)
Monitor USDC + ETH on Uniswap

Easily monitor all USDC + ETH liquidity pool activity on Uniswap V2 or V3

Group 42 (1) Group 43
Monitor HNY + xDAI on Honeyswap

Easily monitor HNY <> xDAI on Honeyswap with Mempool Explorer. 

Group 42 (2) Group 43 (1)
Monitor USDT + ETH on Uniswap

Easily monitor all USDT <> ETH trades on Uniswap V2 and V3

Page 1 Group 43 (1)
Monitor wBTC + ETH on Uniswap

Easily monitor all wBTC <> ETH trades on Uniswap V2 or V3 over $500 in value.

Group 42 (1)-1 Group 43 (1)
Monitor USDC + ETH on Uniswap

Easily monitor all USDC + ETH liquidity pool activity on Uniswap V2 or V3

Group 42 (5) Group 43 (1)
Monitor UNI + ETH on Uniswap

Easily monitor all UNI <> ETH failed transactions on Uniswap V2 or V3

xVLfqJr 1 Page 1
Monitor CAKE on Pancakeswap

Easily monitor all CAKE trades in the Binance mempool

Group 42 (3) Group 43 (1)
Monitor AAVE+ ETH on Uniswap

Easily monitor all AAVE <> ETH trades over $500 on Uniswap V2 or V3

Group 42 (4) Group 43 (1)
Monitor LINK + ETH on Uniswap

Easily monitor all LINK <> ETH trades on Uniswap V2 or V3

Group 42 (5) Group 43 (1)
Monitor UNI + ETH on Uniswap

Easily monitor all UNI <> ETH failed transactions on Uniswap V2 or V3

xVLfqJr 1 Page 1
Monitor CAKE on Pancakeswap

Easily monitor all CAKE trades in the Binance mempool

Group 42 (3) Group 43 (1)
Monitor AAVE+ ETH on Uniswap

Easily monitor all AAVE <> ETH trades over $500 on Uniswap V2 or V3

Group 42 (4) Group 43 (1)
Monitor LINK + ETH on Uniswap

Easily monitor all LINK <> ETH trades on Uniswap V2 or V3

What others are

saying

Ellipse 18
cl Ξ m
@0x_clem

Blocknative introducing a new way to get gas price estimation, using block prediction instead of time estimates.


This could definitely change the way gas price is shown and selected in dApps.

Ellipse 18 (2)
Dan Elitzer 222
@delitzer

If you’re a builder or user of DeFi protocols and you aren’t paying attention to the mempool, you’re flying blind.

Ellipse 18 (1)
Calvin Liu
@cjliu49

@blocknative are masters of the mempool - the most opaque yet critical step in processing a blockchain transaction

Ellipse 18 (3)
Taylor Monahan
@tayvano_
"Check the mempool.”

That Is literally the problem.
 
Now, before you blow up on me...
Ellipse 18 (4)
Zach Krasner
@zachkrasner

Remember 10 years ago when a package delivery was just a black hole with no info on estimated delivery? That’s where Ethereum gas is today, but @blocknative’s introducing a game changer

Ellipse 18-1
Jonathan Alexander
@jalex206

As we've seen in the past week good gas price oracle solutions are critical to the ecosystem, really glad to see this from Blocknative ... OpenZeppelin Defender will include it in its gas price oracle pool

Ellipse 18
cl Ξ m
@0x_clem

Blocknative introducing a new way to get gas price estimation, using block prediction instead of time estimates.


This could definitely change the way gas price is shown and selected in dApps.

Ellipse 18 (2)
Dan Elitzer 222
@delitzer

If you’re a builder or user of DeFi protocols and you aren’t paying attention to the mempool, you’re flying blind.

Ellipse 18 (1)
Calvin Liu
@cjliu49

@blocknative are masters of the mempool - the most opaque yet critical step in processing a blockchain transaction

Ellipse 18 (3)
Taylor Monahan
@tayvano_
"Check the mempool.”

That Is literally the problem.
 
Now, before you blow up on me...
Ellipse 18 (4)
Zach Krasner
@zachkrasner

Remember 10 years ago when a package delivery was just a black hole with no info on estimated delivery? That’s where Ethereum gas is today, but @blocknative’s introducing a game changer

Ellipse 18-1
Jonathan Alexander
@jalex206

As we've seen in the past week good gas price oracle solutions are critical to the ecosystem, really glad to see this from Blocknative ... OpenZeppelin Defender will include it in its gas price oracle pool

Grid+
GridPlus
@GridPlus

We can't say enough good things about working with @blocknative and all of the powerful tools they're building!

Onboard.js is an easy way for developers to add mobile and desktop web3 wallet support to their dapp in no time at all.

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For Builders

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.”

5fd09f00a3af5a83a6d87572_Robert-leshner
Robert Leshner, CEO

Master the mempool today.

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