Guides
Practical guides to writing skills and agents for Claude Code, GitHub Copilot and OpenAI Codex. New to Skill Builder? Start with the interactive guide.
Agent skills vs agents: what is the difference?
Skills teach an agent how to do one job; agents are specialists with a role and boundaries. How they differ, how they work together, and when to use each.
4 min read ·
AGENTS.md vs CLAUDE.md: use both without repeating yourself
AGENTS.md and CLAUDE.md both give AI coding tools instructions. See what each is for and a setup with a single source of truth instead of two copies.
3 min read ·
Export skills and agents for Claude Code, Copilot and Codex
Where Claude Code, GitHub Copilot and Codex look for skills and agents, and how to export one set of files laid out for all three without maintaining copies.
3 min read ·
How to write a SKILL.md: structure, fields and examples
Write a SKILL.md that AI agents actually load: the folder layout, the frontmatter fields, a description that triggers, and how to keep the file short.
4 min read ·