A set of rules for reviewing GitHub pull requests and issue comments. Each review point identifies a required change, where it applies, and why it matters.

It helps an agent write and post direct pull-request reviews and issue comments on GitHub.

It prevents vague or optional feedback and makes the review outcome explicit by requesting changes or approving the pull request.

gh-review — Skill for Claude Code and Codex by mastra-ai/mastra

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 mastra-ai/mastra --skill gh-review

Clone the repo

git clone --depth 1 https://github.com/mastra-ai/mastra

Made for: Claude Code, Codex.

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/mastra-ai/mastra/gh-review/github.svg)](https://agentmods.dev/skills/mastra-ai/mastra/gh-review)

Your own site

<a href="https://agentmods.dev/skills/mastra-ai/mastra/gh-review"><img src="https://agentmods.dev/badge/skills/mastra-ai/mastra/gh-review/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/mastra-ai/mastra/gh-review"><img src="https://agentmods.dev/badge/skills/mastra-ai/mastra/gh-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 84 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 2,153 The whole file, excluding the scripts and references it only reads on demand.

Security scan C 1 finding. A grade says what 26 rules found in the file — not that it is safe.

Origin unknown 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.

Model	Per session	Once invoked
Fable 5.1	$0.00084	$0.02153
Opus 5.5	$0.00034	$0.00861
Sonnet 5.5	$0.00017	$0.00431
Haiku 4.5	$0.00008	$0.00215

Measured 23d ago against content hash e26d5035b068, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

gh-review scanned grade C with 1 finding 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 23d 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.

Harvests environment variableshighData exfiltration

Enumerating or grepping the environment for keys collects credentials unrelated to what the mod says it does.

Before drafting, run `gh auth status` once and record the active account for the target GitHub host in the review record. Do not dump environment variables or expose tokens.

.mastracode/skills/gh-review/SKILL.md · 109 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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.

23d ago First seen · 109 lines · 84 tokens per session scan C e26d5035b068

Subscribe to this mod's changes

gh-review is a skill published in the GitHub repository mastra-ai/mastra (28,835 stars, last pushed today), with no licence file. It adds 84 tokens to every session and 2,153 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it C with 1 finding (harvests environment variables). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-23.

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