---
title: "Features"
description: "Five things in the box, and what each one gets done for you."
---

> Documentation Index
> Fetch the complete documentation index at: https://colmugx.github.io/cetas/llms.txt
> Use this file to discover all available pages before exploring further.

# Features

`npm install -g @posoco/cetas` is the whole install. The five things below need no setup and no plugins. Each page covers one question: what work does it get done.

- **Subagents** — The reviewer cannot edit your code. That is in its definition, not a polite request.
- **Board** — One request becomes a graph you can review, with a record of every step.
- **Bunraku (run\_code)** — Find 3 references in 40 files; your context only ever sees the 3.
- **Model selection** — See who still has quota and what is genuinely cheaper, before you choose.
- **Rate-limit guard** — A 429 at 3 a.m. waits for the reset and keeps going.

## The foundation in the box

A second batch of capabilities gets no pages of its own; here they are in a few paragraphs.

Permissions come in five postures. Between `readonly` and `yolo` sits `auto`: every non-read call goes to the decision model, risky ones declined, safe ones passed, no human babysitting. It requires a configured decision model and refuses to turn on without one. See [Permissions](/cetas/en/configuration/permissions/).

Plan mode writes nothing until you approve.

Skills open in three tiers; the catalog carries metadata, the body is read on activation. Ten skills do not add ten manuals to the prompt.

Sessions land on disk throughout. `/sessions` browses, `/rewind` goes back to before a mistake, a restart continues where you were.

The tool face includes astgrep, which searches code structure rather than text. Before a refactor, "where else is this interface used" returns call sites.

## Suggested order

1. [Model selection](/cetas/en/features/model-selection/) — cost and quality are decided here; you see numbers the same day.
2. [Subagents](/cetas/en/features/subagents/) — start with read-only work, the lowest risk.
3. [Board](/cetas/en/features/board/) — bring it in once the flow is stable, when you are running a pipeline.

Related questions are answered in the [FAQ](/cetas/en/faq/).

Source: https://colmugx.github.io/cetas/en/features/index.mdx