> ## Documentation Index
> Fetch the complete documentation index at: https://docs.neynar.com/llms.txt
> Use this file to discover all available pages before exploring further.

# fetchBulkUsersByEthOrSolAddress

By Eth or Sol addresses

> **Group:** User APIs

Use this when you need: **By Eth or Sol addresses**.

## Usage

```ts theme={"system"}
import { NeynarAPIClient, Configuration } from "@neynar/nodejs-sdk";

const client = new NeynarAPIClient(
  new Configuration({ apiKey: "YOUR_NEYNAR_API_KEY" })
);

const res = await client.fetchBulkUsersByEthOrSolAddress({
  addresses: "example", // Comma separated list of Ethereum or Solana addresses, up to 350 at a time
  // xNeynarExperimental: true, 
  // addressTypes: [], 
  // viewerFid: 123, 
});
console.log(res);
```

## Parameters

| Parameter             | Type                                                     | Required | Description                                                               |
| --------------------- | -------------------------------------------------------- | :------: | ------------------------------------------------------------------------- |
| `addresses`           | `string`                                                 |     ✅    | Comma separated list of Ethereum or Solana addresses, up to 350 at a time |
| `xNeynarExperimental` | `boolean`                                                |     ❌    | -                                                                         |
| `addressTypes`        | `Array<FetchBulkUsersByEthOrSolAddressAddressTypesEnum>` |     ❌    | -                                                                         |
| `viewerFid`           | `number`                                                 |     ❌    | -                                                                         |

## Response

Returns a `RequestArgs` object.

## Error Handling

```ts theme={"system"}
try {
  const res = await client.fetchBulkUsersByEthOrSolAddress({
    addresses: "example"
  });
  // use res
} catch (err) {
  // Axios/HTTP errors, invalid params, auth issues, etc.
  console.error(err);
}
```

## Related API Reference

📖 **API Reference:** [fetchBulkUsersByEthOrSolAddress](/reference/fetch-bulk-users-by-eth-or-sol-address)

For detailed information about the HTTP endpoint, request/response schemas, and additional examples, see the complete API documentation.

## Tips

* Provide a **viewerFid** when supported to respect mutes/blocks and include `viewer_context`.
* Keep requests scoped (e.g., use `limit`) to improve latency.
* Cache results where sensible.