# Reference

Lookup-oriented pages. Scan, don't read.

- {doc}`cli` — every `lp` command, flag, and environment variable.
- {doc}`mcp-tools` — the MCP tool surface exposed to clients.
- {doc}`config` — `.luplo`, server TOML, environment variables.
- {doc}`checks` — the deterministic rule pack (`lp check`).
- {doc}`semantic-impact` — the seven history categories.
- [API reference](../api/index) — auto-generated from `src/luplo` by
  [sphinx-autoapi](https://sphinx-autoapi.readthedocs.io/).

```{toctree}
:hidden:
:maxdepth: 1

cli
mcp-tools
config
checks
semantic-impact
```