Agent skills, explained properly.

Agent Plugins 1.0: Your SKILL.md Now Ships With Its Tools

Agent Plugins 1.0 packages Agent Skills and MCP servers into one installable folder. The plugin.json manifest, the directory layout, who backs it, and the four things v1 deliberately leaves out.

The Agent Skills Standard: One SKILL.md for Every AI Coding Agent

SKILL.md is now an open standard supported by Claude Code, GitHub Copilot, Codex CLI, Gemini CLI, and more. What the spec requires, who supports it, and how to write portable skills.

Use the Same SKILL.md in Claude Code and GitHub Copilot

Copilot reads .claude/skills directories natively. How to share one skill file between Claude Code and GitHub Copilot, what differs between the two, and what to avoid.

copilot-instructions.md vs Agent Skills: Which Should You Use?

GitHub Copilot now has two customization layers — the always-on copilot-instructions.md file and on-demand agent skills. When to use each, and how to migrate.

GitHub Copilot Skills: The Complete Guide to SKILL.md

How agent skills work in GitHub Copilot — where SKILL.md files go, the required frontmatter, how Copilot decides to load them, and how to invoke them explicitly.

Where to Put GitHub Copilot Skills: .github/skills vs ~/.copilot/skills

Project skills vs personal skills in GitHub Copilot — the exact directories, when to use each, and how to verify Copilot actually loaded your SKILL.md.