Diff Summary

Quality score: 70/100 · Category: Security · Sub-category: security-misc

lang:python

One-call structured triage of a git diff. Returns per-file role classification (source/test/config/doc/generated/build/fixture/migration), risk tier (low/medium/high) with reasons, public-API touch detection, co-changed-test detection, secret-risk path flagging, and aggregate stats. Replaces the 5-20 Read calls an agent burns reading each modified file individually to figure out "what kind of change is this and how risky is it". Stateless, no network, stdlib Python only.

What this skill does

Diff Summary is a production-ready Claude Code skill (quality score 70/100) in the security-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/diff-summary/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Diff Summary skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It is part of the open ClaudSkills registry, a community-curated catalog of 15,000+ capabilities you can install for Claude Code — the Claude CLI agent.

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/diff-summary
curl -L https://claudskills.com/skills/diff-summary/SKILL.md \
  -o ~/.claude/skills/diff-summary/SKILL.md

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

Skills live at ~/.claude/skills/diff-summary/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\diff-summary\SKILL.md on Windows. See the full install guide for step-by-step instructions.

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.

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