reviewing-pr-description

A writing reviewer for a pull request, which is a proposed code change submitted for teammate review. It checks whether the title and description clearly explain what changed and why.

In plain words
What is it for?
Use it when preparing or reviewing pull-request titles and descriptions to get specific rewrite suggestions.
Why use it?
It helps reviewers understand a change quickly and leaves clearer project history for people who read it later.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/streamlit/streamlit/reviewing-pr-description
Any agent
npx skills add streamlit/streamlit --skill reviewing-pr-description
Clone the repo
git clone --depth 1 https://github.com/streamlit/streamlit

Made for: Claude Code, Codex.

Per session 81 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 922 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00081 $0.00922
Opus 5 $0.00041 $0.00461
Sonnet 5 $0.00016 $0.00184
Haiku 4.5 $0.00008 $0.00092

Measured 2d ago against content hash 3e20bc9e97f8, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

reviewing-pr-description 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 2d 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.

.claude/skills/reviewing-pr-description/SKILL.md · 56 lines

How it starts

The opening of the file, as written. The whole thing — 56 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Reviewing PR Description

Review a PR's title and description for readability: do they clearly and concisely tell a reviewer what changed and why? Focus on the prose — checking the format (title pattern, required template sections) is a secondary, lighter concern.

This skill only evaluates: it produces findings with concrete proposed rewrites and does not apply them. The caller decides whether to apply the rewrites or present them as feedback.

Audience

The reader is a reviewer or teammate skimming the PR to understand what changed and why. They may not know the implementation context, and later readers will find this text via the commit log or changelog. The title and description should stand on their own.

Principles

  1. Lead with the change and its purpose — the first sentence should state what changed and why, not setup, process, or a description of the problem area.
  2. Explain intent, not mechanics — say what the change enables or why it was made; don't narrate the diff step by step.
  3. Cut what the diff already shows — omit routine, obvious changes (added tests, updated types, fixed lint). Call out only what's non-obvious or decision-worthy.
  4. Concise wins — fewer, denser bullets beat many thin ones. If a bullet restates the title or another bullet, drop it.
  5. Explain non-obvious decisions — deprecations, unit choices, fallback behavior, and trade-offs deserve a sentence on why.
  6. Avoid jargon without context — spell out internal terms or acronyms a newcomer wouldn't know.
  7. Active voice; name the actor — "Deprecates use_container_width" or "The server now rejects oversized uploads" reads more directly than passive or vague phrasing.
  8. The title stands alone — it should convey the change on its own in a commit list or changelog, without the body.
  9. No meta-commentary — cut "This PR...", "We have...", "I added..."; state what changed directly.

Evaluation Process

  1. Gather the PR title and description (gh pr view <n> --json title,body).
  2. For each, ask:
    • Does the title convey the change on its own, or does it need the body to make sense?
    • Does the description lead with the main change and its purpose, or bury it under context/mechanics?
    • Does it explain why for non-obvious decisions, or only list what?
    • Is there jargon or an acronym a newcomer wouldn't understand?
    • Could it be shorter — are there obvious or duplicated points to cut?
    • Is it in passive or vague voice where naming the actor would read more directly?
    • Is there meta-commentary that adds no information?
  3. Also confirm the format briefly (secondary): title matches [type] Description within ~63 chars, and the required template sections from .github/pull_request_template.md are present. For the full standards, see creating-pull-requests and wiki/pull-requests.md.
  4. Report the findings per the Output Format below.

Read the full file on GitHub · 56 lines

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. 2d ago First seen · 56 lines · 81 tokens per session scan A 3e20bc9e97f8

Subscribe to this mod's changes

reviewing-pr-description is a skill published in the GitHub repository streamlit/streamlit (45,655 stars, last pushed today), licensed Apache-2.0. It adds 81 tokens to every session and 922 once invoked, about $0.0004 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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