List of all the Alchemy Notify webhook types to stream web3 data in real-time
Alchemy Notify is used to subscribe to event notifications that occur on your application. You can create a webhook to receive notifications on different types of on-chain activity.
Below are the Alchemy webhook types and their supported networks.
| Webhook Type | Description | Network |
|---|---|---|
| Custom Webhooks | Custom Webhooks allows you to track any smart contract or marketplace activity, monitor any contract creation, or any other on-chain interaction. This gives you infinite data access with precise filter controls to get the blockchain data you need. | All |
| Mined Transaction | The Mined Transaction webhook notifies your app when a transaction sent through your app (using your API key) gets mined. This is useful for you to further notify the users of your app about the status of the transaction. | All |
| Dropped Transactions | The Dropped Transaction webhook notifies your app when a transaction sent through your app (using your API key) gets dropped. This is useful for you to further notify the users of your app about the status of the transaction. | All |
| Address Activity | Alchemy's Address Activity webhook tracks all ETH, ERC20, ERC721 and ERC1155 transfers. This provides your app with real-time state changes when an address sends/receives tokens or ETH. You can specify the addresses for which you want to track this activity. A maximum of 50,000 addresses can be added to a single webhook. | All |
| NFT Activity | The NFT Activity webhook allows you to track ERC721 and ERC1155 token contracts for Ethereum NFTs. This provides your app with real-time state changes when an NFT is transferred between addresses. | Ethereum Mainnet & Goerli |
| NFT Meta Updates | The NFT Metadata Updates webhook allows you to track metadata updates for ERC721 and ERC1155 token contracts for Ethereum and Polygon NFTs. This notifies your app when the metadata for an NFT is updated. | Ethereum Mainnet & Goerli; Polygon Mainnet & Mumbai |