Check the Chains page for details about product and chain support!

Introduction

Alchemy’s Address Activity webhooks supports 30+ EVM chains (and now Solana in early beta). For EVM chains, it 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. A maximum of 100,000 addresses can be tracked by a single webhook.

If you are looking for historical activity, check out the Transfers API Endpoints.

Types of transfers

There are three main types of transfers that are captured when receiving a fromAddress activity response.

Transfer type	Description
External ETH	Top-level transactions from an EOA (Externally Owned Account).
Token	Event logs for ERC20, ERC721, and ERC1155 transfers.
Internal ETH	Internal Transfers from a smart contract address.

Note on Internal Transfers

Internal transfers are currently only supported on Ethereum, Polygon, Arbitrum, Optimism and Base. Support for other networks is a WIP!
Internal Transfers with the call type delegatecall are not supported on Alchemy. Although they have a value associated with them, they don’t transfer a value. For details read the Ethereum Yellow Paper. Internal transfer miner rewards are also unsupported on Alchemy.

Example Response

Whenever one of the addresses that you are tracking sends/receives tokens or ETH, you receive a response from the webhook that looks like this:

Address Activity Response

$ {
>   "webhookId": "wh_k63lg72rxda78gce",
>   "id": "whevt_vq499kv7elmlbp2v",
>   "createdAt": "2024-01-23T07:42:26.411977228Z",
>   "type": "ADDRESS_ACTIVITY",
>   "event": {
>     "network": "ETH_MAINNET",
>     "activity": [
>       {
>         "blockNum": "0xdf34a3",
>         "hash": "0x7a4a39da2a3fa1fc2ef88fd1eaea070286ed2aba21e0419dcfb6d5c5d9f02a72",
>         "fromAddress": "0x503828976d22510aad0201ac7ec88293211d23da",
>         "toAddress": "0xbe3f4b43db5eb49d1f48f53443b9abce45da3b79",
>         "value": 293.092129,
>         "erc721TokenId": null,
>         "erc1155Metadata": null,
>         "asset": "USDC",
>         "category": "token",
>         "rawContract": {
>           "rawValue": "0x0000000000000000000000000000000000000000000000000000000011783b21",
>           "address": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
>           "decimals": 6
>         },
>         "typeTraceAddress": null,
>         "log": {
>           "address": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
>           "topics": [
>             "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
>             "0x000000000000000000000000503828976d22510aad0201ac7ec88293211d23da",
>             "0x000000000000000000000000be3f4b43db5eb49d1f48f53443b9abce45da3b79"
>           ],
>           "data": "0x0000000000000000000000000000000000000000000000000000000011783b21",
>           "blockNumber": "0xdf34a3",
>           "transactionHash": "0x7a4a39da2a3fa1fc2ef88fd1eaea070286ed2aba21e0419dcfb6d5c5d9f02a72",
>           "transactionIndex": "0x46",
>           "blockHash": "0xa99ec54413bd3db3f9bdb0c1ad3ab1400ee0ecefb47803e17f9d33bc4d0a1e91",
>           "logIndex": "0x6e",
>           "removed": false
>         }
>       },
>       {
>         "blockNum": "0xdf34a3",
>         "hash": "0xc84eeeb72d2b23161fd93b088f304902cbd8b4510f1455a65fdac160e37b3173",
>         "fromAddress": "0x71660c4005ba85c37ccec55d0c4493e66fe775d3",
>         "toAddress": "0x7853b3736edba9d7ce681f2a90264307694f97f2",
>         "value": 2400,
>         "erc721TokenId": null,
>         "erc1155Metadata": null,
>         "asset": "USDC",
>         "category": "token",
>         "rawContract": {
>           "rawValue": "0x000000000000000000000000000000000000000000000000000000008f0d1800",
>           "address": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
>           "decimals": 6
>         },
>         "typeTraceAddress": null,
>         "log": {
>           "address": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
>           "topics": [
>             "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
>             "0x00000000000000000000000071660c4005ba85c37ccec55d0c4493e66fe775d3",
>             "0x0000000000000000000000007853b3736edba9d7ce681f2a90264307694f97f2"
>           ],
>           "data": "0x000000000000000000000000000000000000000000000000000000008f0d1800",
>           "blockNumber": "0xdf34a3",
>           "transactionHash": "0xc84eeeb72d2b23161fd93b088f304902cbd8b4510f1455a65fdac160e37b3173",
>           "transactionIndex": "0x48",
>           "blockHash": "0xa99ec54413bd3db3f9bdb0c1ad3ab1400ee0ecefb47803e17f9d33bc4d0a1e91",
>           "logIndex": "0x74",
>           "removed": false
>         }
>       }
>     ]
>   }
> }

Field Definitions

Below you can find descriptions for each field of the response.

Field	Description	Value
`webhookId`	Unique ID of the webhook destination.	`wh_octjglnywaupz6th`
`id`	ID of the event.	`whevt_ogrc5v64myey69ux`
`createdAt`	Timestamp when the webhook was created.	`2022-02-28T17:48:53.306Z`
`type`	Webhook event type.	`ADDRESS_ACTIVITY`
`event`	Mined transaction object.	`N/A`
`network`	The default network for the webhook.	`MATIC_MAINNET`
`activity`	List of transfer events whose `from` or `to` address matches the address configured in the webhook.	`N/A`
`category`	The `external`, `internal`, `erc721`, `erc1155`, `erc20`, or `token` category label for the transfer. NOTE: `token`maps to a transfer of an ERC20 OR ERC721 token	`token`
`fromAddress`	Transfer from address.	`0x59479de9d374bdbcba6c791e5d036591976fe422`
`toAddress`	Transfer to address.	`0x59479de9d374bdbcba6c791e5d036591976fe425`
`erc721TokenId`	Raw `erc721` token ID.	`0x1`
`rawContract`	Underlying contract data.	`N/A`
`rawValue`	The raw transfer value.	`0x`
`address`	Contract address.	`0x93C46aA4DdfD0413d95D0eF3c478982997cE9861`
`log`	Returned log of the `token` transfer event.	`N/A`
`removed`	Transaction is in a chain re-org & no longer in the canonical chain.	`false`
`address`	Log origination address.	`0x93C46aA4DdfD0413d95D0eF3c478982997cE9861`
`data`	Non-indexed arguments of the log.	`0x`
`topics`	Array of zero to four 32 bytes of indexed log arguments.	`0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef`
`blockNum`	the block where the transfer occurred (hex string)	`N/A`
`hash`	transaction hash (hex string)	`N/A`
`value`	converted asset transfer value as a number (raw value divided by contract decimal). Omitted if erc721 transfer or contract decimal is not available	`N/A`
`asset`	`ETH` or the token’s symbol. Omitted if not defined in the contract and not available from other sources	`N/A`
`erc1155Metadata`	A list of objects containing the ERC1155 `tokenId` (hex string) and `value` (hex string). Omitted if not an ERC1155 transfer	`N/A`
`decimal`	contract decimal (hex string). Omitted if not defined in the contract and not available from other sources.	`N/A`
`typeTraceAddress`	the type of internal transfer (`call`, `staticcall`, `create`, `suicide`) followed by the trace address (ex. `call_0_1`). Omitted if not internal transfer. (note you can use this as a unique id for internal transfers since they will have the same parent hash)	`N/A`

How to Set-Up Address Activity Webhook

In your Alchemy Dashboard click the Notify tab.
Find Address Activity and click the CREATE WEBHOOK button on the right side of the window.

Select your CHAIN in the dropdown. Then choose your NETWORK.
Paste your unique webhook URL into the WEBHOOK URL field.
Enter your ETHEREUM ADDRESSES.

Test your webhook by clicking the TEST WEBHOOK button.
After the test is successful, click CREATE WEBHOOK. Your webhook appears in the list.
Check your endpoint to see the responses.

Useful Endpoints

Endpoint	Description
Webhook Addresses	Get all addresses for an Address Activity webhook
Update Webhook Addresses	Add or remove addresses from a specific webhook.
Create Webhook	This endpoint allows you to create a webhook programatically.
Delete Webhook	Allows you to delete a webhook.
Update Webhook	Allows you to set status of webhooks to active or inactive.