Scaffold Skill

Runtime required. This skill uses Canopy tree notation; canopy-runtime must be active.

Detect canopy-runtime — present if either:

• canopy-runtime/SKILL.md exists under .claude/skills/, .github/skills/, or .agents/skills/, OR
• a canopy-runtime marker block exists in CLAUDE.md or .github/copilot-instructions.md.

If neither is present — install canopy-runtime first (see the compatibility field for the source and install options), then re-invoke this skill.

Do not interpret the ## Tree without canopy-runtime active.

New skill name: $ARGUMENTS

Tree

• scaffold-skill
  • validate $ARGUMENTS is a valid kebab-case identifier
  • IF << $ARGUMENTS is not valid kebab-case
    • END Skill name must be kebab-case (e.g. my-skill)
  • IF << /$ARGUMENTS/ exists
    • END Skill already exists — choose a different name or delete the existing one first
  • SHOW_PLAN >> skill name | files to create | directories to create
  • ASK << Proceed? | Yes | No
  • IF << Yes
    • CREATE_SKILL_FILES << $ARGUMENTS
    • confirm files created
    • print next steps to user
    • VERIFY_EXPECTED << assets/verify/verify-expected.md
  • ELSE
    • Cancelled by user.

Rules

• Never overwrite an existing skill directory
• Generated SKILL.md must use the markdown list tree syntax (* nested lists), include the compatibility field, and open with the safety preamble guard block
• Skill file must be named exactly SKILL.md (uppercase) per agentskills.io spec

Response: Summary / Files created / Next steps