# Defining Event Types

### Overview

Nodefy supports a wide array of onchain events across multiple blockchains:

* **Address Activity:** Track any ERC-20, ERC-721, ERC-1155 transaction or transfer involving a specified address.
* **NFT Activity:** Monitor events like NFT transfers, sales, and minting.
* **GraphQL Events:** Monitor specific smart contract events.
* **Farcaster Casts:** Stay updated on new casts (posts) by specific Farcaster users.

Event types require at least one parameter to successfully define an event for your notification. Reference the table below for required parameters by `event_type`. 

To build more targeted and effective notifications, we recommend applying additional filters to the event\_type. More detail can be found in the [Using Filters](/our-api-guide/using-filters.md) section.  

### Event Types

<table><thead><tr><th width="238">Event_Type</th><th width="272">Description</th><th>Required Parameters</th></tr></thead><tbody><tr><td><code>ADDRESS_ACTIVITY</code></td><td>Monitor any activity (transactions, transfers, etc.) on a specific address</td><td><code>addresses</code> (array of addresses)</td></tr><tr><td><code>GRAPHQL</code></td><td>Monitor specific smart contract events using GraphQL </td><td><code>addresses</code> (smart contract event address)</td></tr><tr><td><code>NFT_ACTIVITY</code></td><td>Monitor NFT-related events (transfers, sales, etc.) for a specific contract or collection</td><td><code>contract_address</code></td></tr><tr><td><code>FARCASTER_CAST</code></td><td>Monitor new casts (posts) on Farcaster</td><td><code>keyword</code>, <code>author_fids</code>, <code>channel</code>, or <code>mentioned_fids</code></td></tr><tr><td>(Other types to come)</td><td>...</td><td>...</td></tr></tbody></table>


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