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by gmh5225gmh5225/awesome-skills84 stars
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Guide for multi-platform skill compatibility across Claude Code, Codex, Gemini CLI, Cursor, GitHub Copilot, and other AI coding agents.

  • 1 file
  • 2.8 KB
  • Updated 8 months ago
  • GitHub
Use this Skill: https://skilld.dev/gh/gmh5225/awesome-skills/platforms

Nothing lands on disk. Nothing to clean up.

Fork this Skill

Edit a local copy. It keeps the author and licence.

SKILL.md

≈37 tokens for metadata: the name and description. ≈670 when used: this file.

Description uses 1.9% of example budget

Before choosing a Skill, your Agent reads its name and description. All available Skills share that space.

  • A shorter description leaves more room for other Skills. This entry exceeds our 1% size suggestion.

In our Claude Code example, all Skill names and descriptions share 8,000 characters. This Skill uses ≈153 characters, or 1.9%.

The 1% threshold is a size suggestion. Longer descriptions can still fit.

Your model, settings, and other Skills decide how much text your Agent can read.

Example settings and source

The example uses a 200k-token context and default Claude Code settings. The count includes the name, description, separators, and when_to_use when present. Codex also counts local file paths.

Skit's source and limits: Codex 0.160.1, Claude Code 2.1.292.

Multi-Platform Agent Skills

Scope

Use this skill when:

  • Ensuring skills work across multiple platforms
  • Understanding platform-specific conventions
  • Converting skills between platforms

Platform Compatibility Matrix

Platform Skill Format Project Path Global Path
Amp SKILL.md .agents/skills/ ~/.config/agents/skills/
Antigravity SKILL.md .agent/skills/ ~/.gemini/antigravity/skills/
Claude Code SKILL.md .claude/skills/ ~/.claude/skills/
Codex SKILL.md .codex/skills/ ~/.codex/skills/
Cursor SKILL.md .cursor/skills/ ~/.cursor/skills/
Gemini CLI SKILL.md .gemini/skills/ ~/.gemini/skills/
GitHub Copilot SKILL.md .github/skills/ ~/.copilot/skills/
Goose SKILL.md .goose/skills/ ~/.config/goose/skills/
OpenCode SKILL.md .opencode/skills/ ~/.config/opencode/skills/
Windsurf SKILL.md .windsurf/skills/ ~/.codeium/windsurf/skills/

Universal SKILL.md Format

All platforms use YAML frontmatter:

---
name: skill-name
description: When to use this skill
---

# Instructions here...

Cross-Platform Installation

Most tools auto-discover skills in .agent/skills/:

# Universal installation (works with most tools)
git clone https://github.com/user/skills .agent/skills

Platform-Specific Notes

Claude Code

  • Auto-discovers from .claude/skills/ and ~/.claude/skills/
  • Supports /init command for context bootstrapping

Codex (OpenAI)

  • Supports multiple scopes: REPO, USER, ADMIN, SYSTEM
  • Built-in $skill-creator and $skill-installer
  • Restart required after installing new skills

GitHub Copilot

  • Skills in .github/skills/ directory
  • Uses SKILL.md with name and description required
  • Copilot auto-activates based on description match

Gemini CLI

  • Use @ symbol to attach skill files to prompts
  • Place skills in .gemini/skills/ or .agent/skills/

Conversion Tips

  1. Same SKILL.md format works across platforms
  2. Change only the installation path for different platforms
  3. Test on each target platform before distribution
  4. Document platform-specific requirements in skill README

Full Resource List

For more detailed multi-platform skill resources, complete link lists, or the latest information, use WebFetch to retrieve the full README.md:

https://raw.githubusercontent.com/gmh5225/awesome-skills/refs/heads/main/README.md

The README.md contains the complete categorized resource list with all links.

Source: SKILL.md on GitHub

Skill behaviors

skilld matched fixed text patterns in SKILL.md and file names. Patterns miss obfuscated code.

skilld run checks every file with the same patterns. It asks for approval before it loads a Skill with a behavior marked Needs approval.

Third-party checks

No third-party reports yet.

Provenance

Signed by skilld. This ties the file your Agent reads to that commit on GitHub. It does not review the instructions.

Last checked against GitHub 7 hours ago.

updated 8 months ago

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