## By Eth or Sol addresses

**Group:** User APIs

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

## Usage

```javascript
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

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

## 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.