Notify API is the Simple Way to Build with Mempool Data

Blocknative’s commercial plans provide powerful, production-ready capabilities at scale. Start with a plan that is right for your project. We will grow with you.



Great for testing before you go into production.


Perfect for independent developers and hackathons
  • Get Started For Free
  • Up to 1,000 API events per day
  • Watch up to 100 addresses
  • Event Delivery Timeframe: Best Efforts
  • Forum based support


Billed annually at $1,000 $500 per year.


Perfect for going live on mainnet and testing trading strategies.
  • Prototype, Plus
  • Up to 10,000 API events per day
  • Watch up to 1,000 addresses
  • Event Delivery Timeframe: ≤ 1,000 ms
  • Support via 1:1 chat


Billed annually at $10,000 $5,000 per year.


Perfect for scaling your project and trading strategies.
  • Production, Plus
  • Up to 100,000 API events per day
  • Watch up to 10,000 addresses
  • Event Delivery Timeframe: ≤ 500 ms
  • Support via 1:1 chat


Billed annually at $100,000 $50,000 per year.


Perfect for breakout projects that are rapidly expanding.
  • Growth, Plus
  • Up to 1,000,000 API events per day
  • Watch up to 100,000 addresses
  • Event Delivery Timeframe: ≤ 250 ms
  • Dedicated support

The Highest Resolution Multi-Chain Mempool Data Platform

Blocknative's Notify API is the easiest way to work with mempool data. Notify helps exchanges, protocols, wallets, and traders monitor and repair transactions in real-time. Our vertically-integrated data platform delivers reliable, resilient, and predictable transaction experiences.

Events for every transaction state change

Ethereum Support

main, ropsten, rinkeby, goerli, kovan, & xDai

Supports Standard & Custom Contracts

ERC-20, ERC-721, ERC-165, ERC-777, ERC-1820, 0x Protocol, Curve.Fi, MakerDAO, Synthetix, Uniswap V1 & V2, rToken, Abridged, Set Protocol, & Pillar Badge

Bitcoin Support

main & testnet

Support for Notify API, Notify SDK, Notify.js, and Onboard.js

Local Language Support