# Lean

> Default low-token operating mode for aicrew — terse output and context-economy read policy. Use /lean on to boost or re-enable after /normal.

- **Type:** Skill
- **Install:** `agentstack add skill-aksoftcode-aicrew-lean`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [AKSoftCode](https://agentstack.voostack.com/s/aksoftcode)
- **Installs:** 0
- **Category:** [Agent Skills](https://agentstack.voostack.com/c/agent-skills)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [AKSoftCode](https://github.com/AKSoftCode)
- **Source:** https://github.com/AKSoftCode/aicrew/tree/master/codex-skills/lean
- **Website:** https://github.com/AKSoftCode/aicrew

## Install

```sh
agentstack add skill-aksoftcode-aicrew-lean
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

> **Caveman is default.** This skill only matters if you switched to verbose with `/normal` or `/lean off`.

# Lean (Codex)

Default for all aicrew Codex skills. Not opt-in.

Applies caveman output (`~/Agents/agents/caveman.md`) and context-economy reads (`~/Agents/agents/context-economy.md`) on every session unless the user disables with `/normal` or `/lean off`.

## What lean mode does

1. Keep answers terse and structured.
2. Use diff/tree/search before reading full files.
3. Prefer targeted slices over whole-file reads.
4. Reuse prior summaries unless files changed.
5. Keep correctness and safety constraints intact.

## Session controls

- `/lean on` — explicit boost or re-enable after disable
- `/normal` or `/lean off` — verbose output and relaxed read policy

## Safety and fidelity rules

- Never drop constraints, invariants, acceptance criteria, or required warnings.
- Keep technical strings verbatim: code, commands, paths, flags, URLs, errors, versions.
- Interactive checkpoints: still pause and wait — never skip or fabricate answers.
- If uncertain, ask one short clarifying question or state one explicit assumption.

## Evidence footer (only when relevant)

When proposing changes, debugging, or reporting tests, include:
- Tests: ran / not run
- Assumptions: critical only
- Risks: 1-3 bullets

## Session resilience

When `/session` context is available, keep checkpoint updates in:
`.ai/state/AI_STATE...md`

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [AKSoftCode](https://github.com/AKSoftCode)
- **Source:** [AKSoftCode/aicrew](https://github.com/AKSoftCode/aicrew)
- **License:** MIT
- **Homepage:** https://github.com/AKSoftCode/aicrew

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-aksoftcode-aicrew-lean
- Seller: https://agentstack.voostack.com/s/aksoftcode
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.