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ClaudSkills / Product / prd-spec

Spec Kickoff

Category: Product  ·  Sub-category: prd-spec  ·  Last updated:
type:review
Walk a spec bundle section by section to mutual understanding, producing the signed-off kickoff brief that downstream skills execute from. On sign-off: runs the Discovery-Rigor lens pass, flips Draft to Ready, updates Last reviewed, records the machine-checkable sign-off record with the content anchor written last, commits brief + flip (commit_on_kickoff opt-out), pushes the spec branch, opens a draft PR, then on clean completion marks the spec PR ready as the terminal step (mark_spec_pr_ready_on_kickoff opt-out). The human's merge makes the Ready spec operational; the first dispatch derives Active. Also runs delta re-walkthroughs (on a Ready or Active spec) and amendments (on an Active spec). Halts on genuine spec inconsistency rather than papering over it.
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From the source SKILL.md

The comprehension layer of the planwright pipeline (REQ-B2.4, REQ-B2.2): a section-by-section walkthrough of a spec bundle until human and agent hold the same understanding, recorded as specs/<spec>/kickoff-brief.md — the durable contract (two-brief model, D-3). Downstream skills (/execute-task, /orchestrate) operate from the brief, not by re-reading the spec; what this walkthrough gets wrong, execution gets wrong, so the walkthrough is mutually didactic — the agent probes, the human corrects.

What this skill does

Spec Kickoff 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-kickoff/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Spec Kickoff 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 154,000+ 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-kickoff
curl -L https://claudskills.com/skills/spec-kickoff/SKILL.md \
  -o ~/.claude/skills/spec-kickoff/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/spec-kickoff/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/spec-kickoff/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\spec-kickoff\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.

See pricing → Download desktop app

Frequently asked questions

How do I install the Spec Kickoff Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/spec-kickoff/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Spec Kickoff skill do?
Walk a spec bundle section by section to mutual understanding, producing the signed-off kickoff brief that downstream skills execute from. On sign-off: runs the Discovery-Rigor lens pass, flips Draft to Ready, updates Last reviewed, records the machine-checkable sign-off record with the content anchor written last, commits brief + flip (commit_on_kickoff opt-out), pushes the spec branch, opens a draft PR, then on clean completion marks the spec PR ready as the terminal step (mark_spec_pr_ready_on_kickoff opt-out). The human's merge makes the Ready spec operational; the first dispatch derives Active. Also runs delta re-walkthroughs (on a Ready or Active spec) and amendments (on an Active spec). Halts on genuine spec inconsistency rather than papering over it.
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 Kickoff skill?
Use Spec Kickoff 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 Kickoff" 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 Kickoff 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 Kickoff 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
inkatze. (2026). Spec Kickoff [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/spec-kickoff/
BibTeX
@misc{spec-kickoff-2026,
  author    = {inkatze},
  title     = {Spec Kickoff [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/spec-kickoff/}
}

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