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

# Legacy HelixQL documentation

> Find the archived HelixQL v1 language reference

<div className="flex flex-wrap gap-2"><Badge color="gray" size="sm">Reference</Badge></div>

<Warning>
  HelixQL v1 is archived and is not the current HelixDB request model.
</Warning>

Current HelixDB applications use v3 operation-tree requests through an SDK or the HTTP API.
For the archived HelixQL v1 language reference, see the
[HelixQL v1 documentation](https://github.com/HelixDB/hql-v1-docs).