Context Engineering
Context Engineering is an agent skill (a SKILL.md file) from addyosmani/agent-skills. Optimizes agent context setup. Use when starting a new session, when agent output quality degrades, when switching between tasks, or when you… It works with Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot and OpenCode and has 102,166 GitHub stars across a repository of 13 listed skills.
github.com/addyosmani/agent-skills/skills/context-engineering (opens in a new tab)
- Multi-skill repo
- Plugin marketplace
- Coding
- Actively maintained
Add this skill
Claude
This repository is a Claude Code plugin marketplace. In Claude Code:
/plugin marketplace add addyosmani/agent-skills
/plugin install agent-skills@addy-agent-skillsIn the Claude apps, zip the context-engineering 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/addyosmani/agent-skills.git
cp -r agent-skills/skills/context-engineering .agents/skills/context-engineering # repo; ~/.agents/skills for all projectsStandalone 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/addyosmani/agent-skills.git
cp -r agent-skills/skills/context-engineering .cursor/skills/context-engineering # project; ~/.cursor/skills for all projectsSource (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
Optimizes agent context setup. Use when starting a new session, when agent output quality degrades, when switching between tasks, or when you need to configure rules files and context for a project. Feed agents the right information at the right time. Context is the single biggest lever for agent output quality — too little and the agent hallucinates, too much and it loses focus.
When it triggers
- Use when starting a new session, when agent output quality degrades, when switching between tasks, or when you need to configure rules files and context for a project.
More skills in addyosmani/agent-skills
13 skills are listed from this repository.
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What is the Context Engineering skill?
Context Engineering is an agent skill (a SKILL.md file) from addyosmani/agent-skills. Optimizes agent context setup. Use when starting a new session, when agent output quality degrades, when switching between tasks, or when you… It works with Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot and OpenCode and has 102,166 GitHub stars across a repository of 13 listed skills. Its SKILL.md lives at github.com/addyosmani/agent-skills/skills/context-engineering.
How do I install the Context Engineering skill?
In Claude Code, run /plugin marketplace add addyosmani/agent-skills and then /plugin install agent-skills@addy-agent-skills. For Codex or Cursor, copy the context-engineering folder into .agents/skills/ or .cursor/skills/.
Is the Context Engineering skill free?
Yes. The repository is open source under the MIT license.
Is Context Engineering maintained?
The repository's most recent commit was on Oct 3, 2026. Its latest release is 0.6.12. appsgit only lists skills from repositories with a commit in the last six months.