> ## Documentation Index
> Fetch the complete documentation index at: https://developers.untetherlabs.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> Welcome to the Untether Developer Docs

<Card title="Accessing the API" icon="server" href="/accessing-the-api" horizontal>
  Get started with the Untether Labs API
</Card>

## Using the API

Build robust applications using the Untether Labs API.

<Columns cols={2}>
  <Card title="Pagination" icon="layers-2" href="/using-the-api/pagination">
    Handle large response sets with pagination.
  </Card>

  <Card title="Error Handling" icon="bug" href="/using-the-api/errors">
    Respond to common and unexpected errors in your API requests.
  </Card>

  <Card title="Error Reference" icon="cloud-alert" href="/errors">
    A comprehensive list of all expected API errors and their meanings.
  </Card>

  <Card title="Historical Corrections" icon="book-open-check" href="/using-the-api/historical-corrections">
    Learn how to create historical corrections for signed-off pay periods.
  </Card>
</Columns>

## Guides

Familiarize yourself with common tasks and workflows.

<Columns cols={2}>
  <Card title="Manage Timecard Punches" icon="timer" href="/guides/managing-timecard-punches">
    Learn how to create and delete timecard punches.
  </Card>
</Columns>

## API Versioning

Breaking changes are introduced as new versioned endpoints. Before any endpoint is sunset, we'll publish a deprecation notice and reach out to affected customers with a migration timeline.

Every response includes an `X-API-Version` header identifying the build that served it, useful for correlating issues against your own logs:

```
X-API-Version: 2026-05-14.a3f2c1d
```

You can also query the current deployment at `GET /version` (unauthenticated):

```json theme={null}
{
    "version": "2026-05-14.a3f2c1d",
    "deployedAt": "2026-05-14T18:23:47Z"
}
```

`version` matches the header; `deployedAt` is an ISO 8601 UTC timestamp of when the build was deployed.

## Need Help?

Have questions or need assistance? We're here to help!

[Shoot us an email](mailto:support@untetherlabs.com)