## Reactions for cast

**Group:** Reaction APIs

Use this when you need: **Reactions for cast**.

## Usage

```javascript
import { NeynarAPIClient, Configuration } from "@neynar/nodejs-sdk";

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

const res = await client.fetchCastReactions({
  hash: "example", // required
  types: [], // Customize which reaction types the request should search for. This is a comma-separated string that can include the following values: 'likes' and 'recasts'. By default api returns both. To select multiple types, use a comma-separated list of these values.
  // viewerFid: 123,
  // limit: 123,
  // cursor: "example",
});
console.log(res);
```

## Parameters

| Parameter        | Type                                   | Required | Description                                                                                                                                                                                                                                       |
| ---------------- | -------------------------------------- | -------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `hash`           | `string`                              | ✅       | -                                                                                                                                                                                                                                                 |
| `types`          | `Array<FetchCastReactionsTypesEnum>` | ✅       | Customize which reaction types the request should search for. This is a comma-separated string that can include the following values: 'likes' and 'recasts'. By default api returns both. To select multiple types, use a comma-separated list of these values. |
| `viewerFid`     | `number`                              | ❌       | -                                                                                                                                                                                                                                                 |
| `limit`         | `number`                              | ❌       | -                                                                                                                                                                                                                                                 |
| `cursor`        | `string`                              | ❌       | -                                                                                                                                                                                                                                                 |

## Response

Returns a `RequestArgs` object.

## Error Handling

```javascript
try {
  const res = await client.fetchCastReactions({
    hash: "example",
    types: []
  });
  // 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.