Can it help write user stories?

Absolutely. It follows the INVEST criteria to ensure user stories are independent, negotiable, valuable, estimable, small, and testable for engineering teams.

Does it support prioritization frameworks?

Yes, the skill explicitly supports the MoSCoW framework (Must-have, Should-have, Could-have, Won't-have) to help teams manage scope and focus on MVP requirements.

How does it handle success measurement?

The skill provides a framework for both leading indicators (like adoption and activation) and lagging indicators (like retention and revenue) to ensure feature impact is measurable.

What is the Feature Spec skill?

It is a specialized Claude Code capability that helps users write detailed, structured product requirements documents (PRDs), feature specifications, and acceptance criteria.

Product Feature Specifications

Name: Product Feature Specifications
Author: anthropics

byanthropics

•

8,000

•

Productivity & Workflow

Generates comprehensive product requirements documents (PRDs) with structured problem statements, user stories, and success metrics.

The Feature Spec skill transforms Claude into an expert product manager's assistant, guiding the creation of high-quality PRDs and technical specifications. It enforces industry best practices like the INVEST framework for user stories and MoSCoW prioritization for requirements, ensuring that teams define clear goals, explicit non-goals, and measurable success metrics. This skill is ideal for bridging the gap between product vision and engineering execution by providing a standardized, rigorous structure for documenting feature decisions and acceptance criteria.

Key Features

01Gherkin-style (Given/When/Then) and checklist-based acceptance criteria

02INVEST-compliant user story writing for specific personas

038,000 GitHub stars

04Standardized PRD template generation with problem statements and goals

05Leading and lagging success metric definition for product tracking

06MoSCoW requirement prioritization (Must-have, Should-have, Could-have)

Use Cases

01Defining clear success metrics and acceptance criteria before starting a development sprint

02Drafting a professional PRD from high-level brainstorm notes or user feedback

03Converting product vision into granular, developer-ready user stories and tasks

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add anthropics/knowledge-work-plugins feature-spec

For use in Claude.ai and ChatGPT

Download Skill