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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.

Accessing the API

Get started with the Untether Labs API

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Using the API

Build robust applications using the Untether Labs API.

Pagination

Handle large response sets with pagination.

Error Handling

Respond to common and unexpected errors in your API requests.

Error Reference

A comprehensive list of all expected API errors and their meanings.

Historical Corrections

Learn how to create historical corrections for signed-off pay periods.

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Guides

Familiarize yourself with common tasks and workflows.

Manage Timecard Punches

Learn how to create and delete timecard punches.

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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): 
{
    "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.

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Need Help?

Have questions or need assistance? We’re here to help! Shoot us an email