Estimate Stories Skill

Purpose

Estimate story points for user stories using a structured, evidence-based formula: Story Points = (Complexity × Effort) + Risk

This provides consistent estimations that help with sprint planning, velocity tracking, and story comparison.

Core Principle: Estimation is not guessing—it's structured analysis of complexity, effort, and risk based on acceptance criteria and technical context.

Prerequisites

• Story file exists in .claude/stories/ directory
• Story has clear acceptance criteria
• Understanding of project tech stack
• Access to historical velocity data (optional)