pr-reviewer

pr-reviewer is a skill for Claude Code, Codex from mblode/agent-skills. It costs 68 tokens per session (4,605 once invoked), scanned A, original, MIT.

A read-only code review tool that examines your local changes or branch and reports findings by severity. It can check for bugs, structural problems, security issues, and code that appears unnecessarily generated.

In plain words
What is it for?
Use it to review a local diff, branch diff, or pull request changes. It produces file-and-line findings that another tool or person can use to make fixes.
Why use it?
It helps you spot defensible problems before committing, pushing, or handing work off, without changing your files.

Skill for Claude CodeCodex

Written for Claude Code and Codex: shipped in a Claude Code plugin, but also agents/openai.yaml present. Also seen: mentions CLAUDE.md; mentions Claude Code; mentions AGENTS.md.

Part of the agent-skills plugin — 25 skills shipped together

Good fit Use it to review a local diff, branch diff, or pull request changes. It produces file-and-line findings that another tool or person can use to make fixes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mblode/agent-skills/pr-reviewer
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 mblode/agent-skills --skill pr-reviewer
Clone the repo
git clone --depth 1 https://github.com/mblode/agent-skills

Made for: Claude Code, Codex.

Or install agent-skills, the plugin that ships this one along with the rest of its 25 skills.

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 pr-reviewer

README.md
[![agentmods](https://agentmods.dev/badge/skills/mblode/agent-skills/pr-reviewer/github.svg)](https://agentmods.dev/skills/mblode/agent-skills/pr-reviewer)
Your own site
<a href="https://agentmods.dev/skills/mblode/agent-skills/pr-reviewer"><img src="https://agentmods.dev/badge/skills/mblode/agent-skills/pr-reviewer/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 pr-reviewer

Your own site · 80×15
<a href="https://agentmods.dev/skills/mblode/agent-skills/pr-reviewer"><img src="https://agentmods.dev/badge/skills/mblode/agent-skills/pr-reviewer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 68 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,605 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00068 $0.04605
Opus 5 $0.00034 $0.02302
Sonnet 5 $0.00014 $0.00921
Haiku 4.5 $0.00007 $0.00460

Measured yesterday against content hash abb88f4c4b26, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

pr-reviewer 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 yesterday.

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.

skills/pr-reviewer/SKILL.md · 182 lines

How it starts

The opening of the file, as written. The whole thing — 182 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Local Review

  • IS: read-only review of a local diff, branch diff, or PR. Returns severity-tiered findings; leaves the working tree unchanged.
  • IS NOT: fixing code (tidy), creating PRs (pr-creator), monitoring CI or review threads (pr-babysitter), frontend UX, accessibility, or rendered-quality review (ui-design Audit mode), library or CLI ergonomics (dx-audit), architecture briefs (codebase-architecture), reviewing plans (planning).

Only report issues you can defend with file:line evidence.

When to run: on the requested diff, including a failing one. Existing check results at the same revision are usable evidence; run a focused check when it can settle a finding, and report coverage limits.

Then hand off. tidy runs next in the usual flow, hunting complexity and applying what it finds, including this report's confirmed findings. So write the report to be consumed: every Fix: line has to be something a person could commit. Do not apply anything yourself, even a one-character fix; the moment this skill edits a file the user loses the read-only report they asked for.

Harness precedence

Claude Code bundles /code-review (correctness plus cleanups, with effort levels, --fix, and --comment) and /security-review (security on the current diff). A typed slash command runs the bundled skill, not this one; this skill runs when named or when a mode phrase below matches. It does not replace them. It adds Structural and Deslop modes, a whole-repo Security audit, a plausible tier the bundled commands filter out, REVIEW.md support (which the local /code-review does not read), and the same report on any harness, with git and the file tools alone. Do not run both on one diff unprompted; where a bundled review already ran this session, its findings enter the verdict step as candidates rather than being re-derived. Never reach for --fix or tidy mid-review to "confirm" a finding; that edits the tree the report is about.

Mode dispatch

Read the full file on GitHub · 182 lines

Files

What ships with it

8 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. yesterday Changed · +2 lines abb88f4c4b26
  2. 4d ago Changed · -4 lines · -118 tokens per session c3bf6045368c
  3. 9d ago First seen · 184 lines · 186 tokens per session scan A ebc2ecca6cf5

Subscribe to this mod's changes

pr-reviewer is a skill published in the GitHub repository mblode/agent-skills (106 stars, last pushed yesterday), licensed MIT. It adds 68 tokens to every session and 4,605 once invoked, about $0.0003 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 2026-08-30.

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