> ## 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.

# fetchBulkUsers

By FIDs

> **Group:** User APIs

Use this when you need: **By FIDs**.

## 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.fetchBulkUsers({
  fids: "example", // Comma separated list of FIDs, up to 100 at a time
  // xNeynarExperimental: true, 
  // viewerFid: 123, 
});
console.log(res);
```

## Parameters

| Parameter | Type | Required | Description |
| - | - | :-: | - |
| `fids` | `string` | ✅ | Comma separated list of FIDs, up to 100 at a time |
| `xNeynarExperimental` | `boolean` | ❌ | - |
| `viewerFid` | `number` | ❌ | - |

## Response

Returns a `RequestArgs` object.

## Error Handling

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

## Related API Reference

📖 **API Reference:** [fetchBulkUsers](/reference/fetch-bulk-users)

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.


## Related topics

- [SDK v1 to v2 migration guide](/reference/neynar-nodejs-sdk-v1-to-v2-migration-guide.md)
- [By FIDs](/reference/fetch-bulk-users.md)
- [SIWN: React Native](/docs/sign-in-with-neynar-react-native-implementation.md)
- [Cast Action with Analytics](/docs/cast-action-with-analytics-neynar.md)
- [fetchBulkUsersByEthOrSolAddress](/nodejs-sdk/user-apis/fetchBulkUsersByEthOrSolAddress.md)


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