Skill Specification

Formal specification for evolutionarily robust agent skills.

Why This Matters

Skills that follow the spec work across:

• Claude Code (Anthropic)
• Codex CLI (OpenAI)
• Cursor (Anysphere)
• Amp (Sourcegraph)
• Letta (memGPT)
• Future agents

Non-compliant skills break silently or fail validation.

SKILL.md Schema