# Speckit.diff

> Artifact Comparator - Compares differences between artifacts.

- Skill: `wedabro/speckit-diff` (Agent Skill)
- Install (CLI): `npx skillmds@latest add wedabro/speckit-diff`
- Raw SKILL.md: https://api.skillmd.com/api/skills/wedabro/speckit-diff/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: wedabro (https://skillmd.com/u/wedabro)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/wedabro/speckit-diff

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## 🎯 Mission
Compare 2 versions of artifact → highlight changes → evaluate impact.

## 📥 Input
- 2 files or 2 versions to compare (spec, plan, tasks, code)

## 📋 Protocol
1. Read both versions.
2. Compare section-by-section:
   - ➕ **Added**: New Sections/requirements
   - ➖ **Removed**: Sections/requirements are removed
   - ✏️ **Changed**: Sections have changed content
3. Impact Analysis: What downstream artifact does each change affect?
   - For example: Add fields in spec → need to update plan → need to add tasks
4. Output summary table.

## 📤 Output
- Console: Diff summary table
- File: `.agents/memory/diff-report.md` (if needed to save)

## 🚫 Guard Rails
- Compare and report ONLY — DO NOT arbitrarily edit artifacts.