> For the complete documentation index, see [llms.txt](https://timechain.gitbook.io/neucron-javascript-sdk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://timechain.gitbook.io/neucron-javascript-sdk/wallets-and-assets/utility-tokens.md).

# Utility Tokens

Accessor: `sdk.utility`

Create/update utility-token definitions and mint or redeem utility tokens.

## Method surface

| Method                        | Purpose       |
| ----------------------------- | ------------- |
| `sdk.utility.createUtility()` | createUtility |
| `sdk.utility.updateUtility()` | updateUtility |
| `sdk.utility.mint()`          | mint          |
| `sdk.utility.redeem()`        | redeem        |

## Basic usage

```typescript
import NeucronSDK from '@timechainlabs/neucron-ts-sdk';

const sdk = new NeucronSDK({ authToken: process.env.NEUCRON_TOKEN });

// Use sdk.utility methods after authentication.
```

## Notes

* Methods return `Promise<HttpResponse<T>>` unless they are local helpers such as token getters/setters.
* Authenticate with `sdk.auth.login()` or initialize with `authToken` before protected calls.
* Pass `businessId` on business-scoped operations; constructor-level `businessId` is typed but not applied globally.
* Request and response schemas are exported from `@timechainlabs/neucron-ts-sdk` and `@timechainlabs/neucron-ts-sdk/schemas`.