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Stop That Shit

Stop That Shit is an agent skill (a SKILL.md file) from lennney/stop-that-shit. Complete requested work while preventing speculative defenses and scope creep. It works with Claude Code, Codex and OpenCode and has 2,495 GitHub stars. Install it by copying the skill folder into your agent's skills directory.

github.com/lennney/stop-that-shit/skills/stop-that-shit (opens in a new tab)

View on GitHub (opens in a new tab)

Add this skill

Claude

This repository is a Claude Code plugin marketplace. In Claude Code:

/plugin marketplace add lennney/stop-that-shit
/plugin install stop-that-shit@stop-that-shit

In the Claude apps, zip the stop-that-shit folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

ChatGPT / Codex

Codex reads skills from .agents/skills/ in a repo or ~/.agents/skills/ for every project:

git clone --depth 1 https://github.com/lennney/stop-that-shit.git
cp -r stop-that-shit/skills/stop-that-shit .agents/skills/stop-that-shit   # repo; ~/.agents/skills for all projects

Standalone skills also load in the ChatGPT desktop app.

Cursor

Cursor loads skills from .cursor/skills/ (or ~/.cursor/skills/) and also reads .claude/skills/:

git clone --depth 1 https://github.com/lennney/stop-that-shit.git
cp -r stop-that-shit/skills/stop-that-shit .cursor/skills/stop-that-shit   # project; ~/.cursor/skills for all projects

Source (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), code.claude.com/docs/en/plugin-marketplaces (opens in a new tab), support.claude.com/en/articles/12512180-using-skills-in-claude (opens in a new tab), learn.chatgpt.com/docs/build-skills (opens in a new tab), cursor.com/docs/context/skills (opens in a new tab)

What this skill does

Complete requested work while preventing speculative defenses and scope creep. Use when considering extra hardening, reviewing possible overengineering, resolving repeated verification loops, following explicit task boundaries, or when the user invokes Stop That Shit. Ordinary use of validation, retries, or dependencies alone is not a trigger. Meet the task's responsibilities in full. Let real needs drive complexity.

When it triggers

  • Use when considering extra hardening, reviewing possible overengineering, resolving repeated verification loops, following explicit task boundaries, or when the user invokes Stop That Shit.

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FAQ

Stop That Shit FAQ

Still curious? Email info@appsgit.com.

What is the Stop That Shit skill?

Stop That Shit is an agent skill (a SKILL.md file) from lennney/stop-that-shit. Complete requested work while preventing speculative defenses and scope creep. It works with Claude Code, Codex and OpenCode and has 2,495 GitHub stars. Install it by copying the skill folder into your agent's skills directory. Its SKILL.md lives at github.com/lennney/stop-that-shit/skills/stop-that-shit.

How do I install the Stop That Shit skill?

In Claude Code, run /plugin marketplace add lennney/stop-that-shit and then /plugin install stop-that-shit@stop-that-shit. For Codex or Cursor, copy the stop-that-shit folder into .agents/skills/ or .cursor/skills/.

Is the Stop That Shit skill free?

Yes. The repository is open source under the MIT license.

Is Stop That Shit maintained?

The repository's most recent commit was on Oct 3, 2026. Its latest release is 0.2.4. appsgit only lists skills from repositories with a commit in the last six months.