Spec Phase Projected
WRAPS gsd-spec-phase to make a phase's SPEC.md a PROJECTION of the Foundation's atomic directives, not a free authoring. Generates a directive->AC scaffold 1:1 (directive IDs preserved as [<CAP>-D<NN>] tags), invokes gsd-spec-phase ELABORATE-ONLY with that scaffold injected as context (it elaborates HOW — test shapes, edge cases — but cannot invent WHAT), then runs Gate-1 /peer-review whose set-diff FAILs on any dropped or invented directive. NEVER edits gsd-spec-phase — enforcement is the gate. This is the anti-drift core: the 80%-that-emerges-mid-roadmap is elaboration bounded by the up-front WHAT the human signed. Activates on /spec-phase-projected, project the spec, spec from the foundation, gate-1 projection check.
From the source SKILL.md
You make GSD's per-phase SPEC.md a projection of the Foundation's directives. spec-phase elaborates HOW (test shapes, edge cases); it cannot invent new WHAT. The Foundation becomes structurally load-bearing — GSD can't plan a phase without consuming the directives, and the Gate-1 set-diff catches any drop or invention.
What this skill does
Spec Phase Projected is a community-contributed Claude Code skill in the prd-spec sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/spec-phase-projected/ and loads when your prompt matches the skill's trigger.
Who uses this skill
The Spec Phase Projected Claude Code skill is built for product managers, product designers, and cross-functional teams planning, shipping, and measuring product features. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 117,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
How to install
Free
Manual install (2 steps)
mkdir -p ~/.claude/skills/spec-phase-projected
curl -L https://claudskills.com/skills/spec-phase-projected/SKILL.md \
-o ~/.claude/skills/spec-phase-projected/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/spec-phase-projected/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/spec-phase-projected/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\spec-phase-projected\SKILL.md on Windows. See the full install guide for step-by-step instructions.
Telegram
📱 Install from your phone or desktop Telegram
Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →
Pro
One-click install via the desktop app
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
Pro
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
Frequently asked questions
How do I install the Spec Phase Projected Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy
SKILL.md from the source repository to
~/.claude/skills/spec-phase-projected/SKILL.md and restart Claude Code. Both flows are detailed at
claudskills.com/install/.
What does the Spec Phase Projected skill do?
WRAPS gsd-spec-phase to make a phase's SPEC.md a PROJECTION of the Foundation's atomic directives, not a free authoring. Generates a directive->AC scaffold 1:1 (directive IDs preserved as [<CAP>-D<NN>] tags), invokes gsd-spec-phase ELABORATE-ONLY with that scaffold injected as context (it elaborates HOW — test shapes, edge cases — but cannot invent WHAT), then runs Gate-1 /peer-review whose set-diff FAILs on any dropped or invented directive. NEVER edits gsd-spec-phase — enforcement is the gate. This is the anti-drift core: the 80%-that-emerges-mid-roadmap is elaboration bounded by the up-front WHAT the human signed. Activates on /spec-phase-projected, project the spec, spec from the foundation, gate-1 projection check.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Spec Phase Projected skill?
Use Spec Phase Projected when your Claude Code task falls under the Product category — specifically in the prd spec area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Spec Phase Projected" or describe the task and let Claude pick). Browse related skills at
/category/product/.
What is a Claude Code skill and how does the Spec Phase Projected skill fit in?
A Claude Code skill is a
SKILL.md file that lives under
~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Spec Phase Projected is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Product category. Learn more at
/learn/what-is-a-claude-skill/.
Attribution & license
Cite this skill
If you reference this skill in a blog post, paper, or documentation, you can cite it as:
APA
Kohlex. (2026). Spec Phase Projected [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/spec-phase-projected/
BibTeX
@misc{spec-phase-projected-2026,
author = {Kohlex},
title = {Spec Phase Projected [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/spec-phase-projected/}
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