spec-driven-dev SKILL.md skillA
spec-driven-dev from cooneycw/claude-power-pack is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add cooneycw/claude-power-pack/spec-driven-dev@git:20260920.677b300Pins git:20260920.677b300 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- cooneycw/claude-power-pack
- Path
.claude/skills/spec-driven-dev/SKILL.md- Versions recorded
- 3
- Latest version
- git:20260920.677b300, committed Sep 20, 2026
- First version recorded
- Aug 16, 2026
- Size
- 966 bytes
- Repository stars
- 21
- License
- a license file GitHub does not identify
Contract-first development, proportional spec routing and planning. Use for spec driven work (SDD) - writing a specification, capturing requirements, or applying the issue contract.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Spec-Driven Development Skill When the user asks about spec-driven development, planning, or requirements: 1. Read `docs/agents/issue-contract.md` - the canonical contract every change states 2. Route by tier: Tier 1 and Tier 2 express the contract in the issue body; Tier 3 escalates to a full `.specify/` spec that the issue references rather than copies 3. Read `docs/skills/spec-driven-dev.md` for the Tier 3 workflow and templates 4. Keep the outcome separate from a proposed approach, and treat a constraint as binding even when its rationale is missing 5. Reference GitHub Spec Kit for tooling
Read the whole file at its exact version.
How to install
mdr add cooneycw/claude-power-pack/spec-driven-dev@sha256:ba182d55d7f7c621The line at the top of this page pins the label git:20260920.677b300, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_us72wp7jpst7ccdp)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Aug 16, 2026 and Sep 20, 2026, about one every 17 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260920.677b300 latest | 2026-09-20 | 677b300 | 966 B | A | view · diff |
| git:20260912.8ebef00 | 2026-09-12 | 8ebef00 | 860 B | A | view · diff |
| git:20260816.e816052 | 2026-08-16 | e816052 | 503 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (966 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
cooneycw/claude-power-pack · 21 stars · license a license file GitHub does not identify · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_us72wp7jpst7ccdp GET https://markdownregistry.com/api/v1/resolve?ref=cooneycw/claude-power-pack/spec-driven-dev GET https://markdownregistry.com/api/v1/blob/ba182d55d7f7c621e5a408cd0460b81f3e9258d47ac839623c50990fa0d47457
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.