# Register Farcaster account onchain

**Group:** Onchain APIs

Use this when you need: **Register Farcaster account onchain**.

## Usage

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

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

const res = await client.registerAccountOnchain({
  xWalletId: "example", // Wallet ID to use for transactions
  registerUserOnChainReqBody: { /* request body */ }, // required
});
console.log(res);
```

## Parameters

| Parameter                           | Type                                     | Required | Description                                  |
| ----------------------------------- | ---------------------------------------- | -------- | -------------------------------------------- |
| `xWalletId`                        | `string`                                | ✅       | Wallet ID to use for transactions            |
| `registerUserOnChainReqBody`      | `RegisterUserOnChainReqBody`            | ✅       | -                                            |

## Response

Returns a `RequestArgs` object.

## Error Handling

```javascript
try {
  const res = await client.registerAccountOnchain({
    xWalletId: "example",
    registerUserOnChainReqBody: { /* request body */ }
  });
  // 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.