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

# Reference

> Command, configuration, and constants reference — generated from source.

Generated directly from the source code and gated in CI, so it cannot
drift from what ships.

<CardGroup cols={2}>
  <Card title="ohd command reference" icon="server" href="/reference/ohd">
    Every Server control command, option, and settings key.
  </Card>

  <Card title="oh command reference" icon="terminal" href="/reference/oh">
    Every CLI command, option, exit code, and environment variable.
  </Card>

  <Card title="daemon.json reference" icon="gear" href="/reference/daemon-json">
    Every configuration field, environment variable, and default the
    Server reads — with the precedence chain.
  </Card>
</CardGroup>