1.5The CLI-Wrapping Skill Pattern

The best browser-automation skills are intentionally minimal — a single SKILL.md file with zero bundled resources:

skills/browser-automation/
└── SKILL.md    # ~100 lines. That's it.

This is a deliberate design choice:

• The CLI binary handles all complexity (browser management, actionability, protocol plumbing)
• The skill just needs to teach the agent the command interface
• No scripts needed because the CLI is the script
• No references needed because the SKILL.md itself is concise enough

This is the gold standard for CLI-wrapping skills: thin instruction layer over a capable binary. Vibium's vibe-check skill pioneered the pattern in 2025; Microsoft adopted it in 2026 — playwright-cli install --skills generates exactly this kind of file. The pattern outlived the question of which vendor's binary sits underneath, and it is portable across agents: the same SKILL.md works in Claude Code, Cursor, Gemini CLI, and Codex CLI.