# Skill Zero

> Arm the zero rung: cut temporary automatic skills while manual summon remains available, or cut all skills.

- Skill: `gaia-research/skill-zero` (Agent Skill)
- Install (CLI): `npx skillmds@latest add gaia-research/skill-zero`
- Raw SKILL.md: https://api.skillmd.com/api/skills/gaia-research/skill-zero/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: gaia-research (https://skillmd.com/u/gaia-research)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/gaia-research/skill-zero

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# Skill Zero

Set the routing posture to `zero`. A session sits at exactly one rung.

```text
zero · low · med · high · xhigh · max · ultra
```

The default `temporary` cut means temporary automatic summoning is cut while manual `/summon` remains available. If the user explicitly requested the `all` cut, all skill summons, including manual `/summon`, are cut.

Already-loaded skills cannot be evicted mid-session. This setting changes summoning routing; it does not empty or restart the running session. Do not call the `summon` tool from this skill.

No rung carries a count and no summon is capped. Invocation metadata still distinguishes human-led Skill Heaven skills from model-led Skill Hell skills; zero changes whether either surface may summon, not the source classification.