# Extract Ds Skill

> Test fixture — meta-skill self-mode, leaked hardcoded path in prescription text. The check should FAIL.

- Skill: `vercel-labs/extract-ds-skill-4` (Agent Skill)
- Install (CLI): `npx skillmds@latest add vercel-labs/extract-ds-skill-4`
- Raw SKILL.md: https://api.skillmd.com/api/skills/vercel-labs/extract-ds-skill-4/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: Vercel Labs (https://skillmd.com/u/vercel-labs)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/vercel-labs/extract-ds-skill-4

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## Prescription text

Prescription text claims the canonical reference project lives at <https://github.com/vercel-labs/example-app>, leaking a GitHub URL outside any illustrative block. The check must catch this on the line above.

### Worked example — public-DS-shaped target (illustrative)

Inside the labeled block, hardcoded references are allowed:

- Reference project: <https://github.com/vercel-labs/example-app>
- Token package: `@example/tokens`