light-review-existing-diffs

light-review-existing-diffs is a skill for Claude Code, Cursor from emaraschio/cursor-commands. It costs 16 tokens per session (306 once invoked), scanned A, original, MIT.

A quick review workflow for changes already present in the working tree or recent commits, without the full context of a pull request. It looks for risky edits, debug code, style problems, and missing tests or documentation.

In plain words
What is it for?
Use it to scan pending changes, identify high-risk files, check whether behavior changes have matching tests or docs, and record follow-up questions.
Why use it?
It provides an early quality check when a full review is unnecessary or unavailable. It highlights areas that may need deeper review without treating minor style issues as blockers.

Skill for Claude CodeCursor

Written for Claude Code and Cursor: user-invocable in frontmatter, but also installed under .cursor/.

Good fit Use it to scan pending changes, identify high-risk files, check whether behavior changes have matching tests or docs, and record follow-up questions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/emaraschio/cursor-commands/light-review-existing-diffs
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add emaraschio/cursor-commands --skill light-review-existing-diffs
Clone the repo
git clone --depth 1 https://github.com/emaraschio/cursor-commands

Made for: Claude Code, Cursor.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for light-review-existing-diffs

README.md
[![agentmods](https://agentmods.dev/badge/skills/emaraschio/cursor-commands/light-review-existing-diffs/github.svg)](https://agentmods.dev/skills/emaraschio/cursor-commands/light-review-existing-diffs)
Your own site
<a href="https://agentmods.dev/skills/emaraschio/cursor-commands/light-review-existing-diffs"><img src="https://agentmods.dev/badge/skills/emaraschio/cursor-commands/light-review-existing-diffs/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for light-review-existing-diffs

Your own site · 80×15
<a href="https://agentmods.dev/skills/emaraschio/cursor-commands/light-review-existing-diffs"><img src="https://agentmods.dev/badge/skills/emaraschio/cursor-commands/light-review-existing-diffs.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 306 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00016 $0.00306
Opus 5 $0.00008 $0.00153
Sonnet 5 $0.00003 $0.00061
Haiku 4.5 $0.00002 $0.00031

Measured 6d ago against content hash 349d83e288f6, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

light-review-existing-diffs scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.cursor/skill-contracts/light-review-existing-diffs/SKILL.md · 38 lines

What it actually says

Overview

Perform a quick quality pass on current diffs to surface risky areas, ensure polish, and flag follow-up actions for deeper review.

Steps

  1. Scan recent changes
    • List open branches or pending commits requiring review
    • Skim side-by-side diffs focusing on new or modified files
    • Note files or modules with large or complex edits
  2. Assess quality signals
    • Watch for TODOs, debug code, or commented blocks needing cleanup
    • Verify naming, formatting, and imports follow project standards
    • Check that tests or documentation were updated when behavior changed
  3. Flag next actions
    • Mark sections that warrant full review or pair programming
    • Capture questions or uncertainties to raise with the author
    • Document any quick fixes you can apply immediately

Review Checklist

  • High-risk files identified
  • Debugging artifacts removed or flagged
  • Style and conventions validated
  • Tests/docs updates confirmed or requested
  • Follow-up items recorded for deeper review

Guardrails

  • Raise nitpicks as optional and non-blocking; keep the pass fast.
  • Flag security issues even in a light review, no matter how quick the pass.
  • Do not commit, push, merge, or run production scripts without consent.
Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 38 lines · 16 tokens per session scan A 349d83e288f6

Subscribe to this mod's changes

light-review-existing-diffs is a skill published in the GitHub repository emaraschio/cursor-commands (9 stars, last pushed 1mo ago), licensed MIT. It adds 16 tokens to every session and 306 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.