addyosmani/agent-skills
spec-driven-development
Creates specs before coding. Use when starting a new project, feature, or significant change and no specification exists yet. Use when drafting a PRD or requirements document with objectives and scope, or when requirements are unclear, ambiguous, or only exist as a vague idea. Use when a single requirement spans several independently testable capabilities and needs decomposing into a capability map of modules before specifying.
What you’re adding
This skill may reference tools or services you need to set up separately. The package check shows the exact files; it does not install dependencies or run scripts.
1 files in the provider snapshot
SKILL.md13.1K B
Snapshot inspected Oct 19, 2026. Adding uses a fresh GitHub revision and checks it separately.
Your vault, your checks
- 01Inspect the source
Review the exact revision, files and available capacity.
- 02Save a private Draft
Run your vault’s security scan and complete any required review.
- 03Use the approved version
Make it available through your existing agent connection.
Observed activity
All-time installs reported by skills.sh. Daily observations start when this catalog is first synchronized.
| Date | Installs | Rank |
|---|---|---|
| Sep 27, 2026 | 43,972 | #642 |
| Sep 28, 2026 | 44,470 | #641 |
| Sep 30, 2026 | 45,783 | #637 |
| Oct 1, 2026 | 46,385 | #636 |
| Oct 2, 2026 | 46,915 | #637 |
| Oct 3, 2026 | 47,458 | #624 |
| Oct 5, 2026 | 48,732 | #620 |