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Write a Spec or PRD

Turn a vague feature idea into a structured spec with goals and success metrics.

Official Anthropicby AnthropicChecked October 18, 2026

From Anthropic's Product Management plugin, this skill drafts a product requirements document from a problem statement. It separates goals from non-goals and defines how success will be measured.

Who it is for

  • Product managers
  • Founders
  • Team leads
  • Designers

Prompts to try

Once the skill is installed, ask for the result in plain words. Claude picks the skill up on its own.

Prompt 1
Write a PRD for adding team accounts to our app
Prompt 2
Turn this customer request into a spec with acceptance criteria
Prompt 3
Scope a phased spec for a new reporting feature

How to install it

In Claude Code

  1. /plugin marketplace add anthropics/knowledge-work-plugins
  2. /plugin install product-management@knowledge-work-plugins

In Claude.ai

Listed in Claude's plugin directory for Cowork: add the Product Management plugin from Customize > Plugins on a paid plan, and its skills also load in chat.

Good to know

The plugin also covers roadmaps, sprint planning, stakeholder updates and research synthesis.

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How we checked it

Confirmed SKILL.md at product-management/skills/write-spec/SKILL.md in anthropics/knowledge-work-plugins via the GitHub API; skill folder last changed 2026-03-13, repo has 29,992 stars and was pushed 2026-10-17; published in Anthropic's knowledge-work-plugins marketplace.

Source: github.com/anthropics/knowledge-work-plugins/tree/main/product-management/skills/write-spec

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