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Agent skill

Explain PR

by dyoshikawa in dyoshikawa/rulesync

Explain a PR: the background problem and the proposed solution

MITAuto-check passedDevelopment

Install Explain PR

skills CLI
$ npx skills add dyoshikawa/rulesync --skill explain-pr -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install dyoshikawa/rulesync explain-pr --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/dyoshikawa/rulesync.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.rulesync/skills/explain-pr .claude/skills/explain-pr && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
explain-pr
GitHub stars
1.5k
Token cost
~211 tokens
SKILL.md length
111 words
Files
1
Skills in repo
40
Repo updated
First seen
Licence
MIT

At a glance

Explain a PR: the background problem and the proposed solution

  • Works in 2 steps: Gather PR Information → Analyze and Explain
  • Development work in your project
  • SKILL.md covers Step 1: Gather PR Information and Step 2: Analyze and Explain
  • Calls gh

What it does

Explain PR is an agent skill from dyoshikawa/rulesync. Explain a PR: the background problem and the proposed solution

Its SKILL.md is about 210 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

It sits in Development. The repository describes itself as: A Utility CLI for AI Coding Agents. The licence is MIT.

When your agent uses it

  • Development work in your project

Example prompts

  • “/explain-pr”

Workflow steps

2 steps, taken from the step headings in SKILL.md.

  1. Gather PR Information
  2. Analyze and Explain

What it can do on your machine

Read from SKILL.md and the folder at commit 85bcaf6. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Shell commands in SKILL.md call:

    • gh

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md. Its commands use gh, which can reach the network depending on how they are called.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Explain PR loads about 211 tokens when it runs. Until then it costs about 18 tokens; SKILL.md has 111 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~18
When it runs · the whole SKILL.md, loaded when a task matches
~211

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from dyoshikawa/rulesync at commit 85bcaf6, republished under its MIT licence (© dyoshikawa). 111 words, ~211 tokens.

Download SKILL.mdSave it as .claude/skills/explain-pr/SKILL.md (or your agent's skills folder).
name
explain-pr
description
Explain a PR: the background problem and the proposed solution
targets
*

target_pr = the user's request

If target_pr is not provided, use the PR of the current branch.

Step 1: Gather PR Information

Run the following in parallel:

  • Get the PR description and metadata: gh pr view <pr_number>
  • Get the PR diff: gh pr diff <pr_number>

Step 2: Analyze and Explain

Based on the PR content, explain the following two aspects:

  1. Background (Problem/Motivation): What issue or limitation existed before this PR? Why was this change needed?
  2. Solution: What approach does this PR take to address the problem? Summarize the key changes and design decisions.

Keep the explanation concise and focused. Use the language of the current conversation (follow the user's language).

© dyoshikawa, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .rulesync/skills/explain-pr of dyoshikawa/rulesync.

Open the folder on GitHubat commit 85bcaf6

Compare with similar skills

Explain PR next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Explain PR compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Explain PR this skilldyoshikawa/rulesync1.5k—~211Automated safety check: PassMIT
Vercel Composition Patternssupabase/supabase111k59 repos~726Automated safety check: PassMIT
Finishing a Development Branchobra/superpowers296k5 repos~1.9kAutomated safety check: PassMIT
Typescript Advanced Typesrolling-scopes/rsschool-app10k25 repos~4.2kAutomated safety check: PassMPL-2.0
PR Babysitteropeninterpreter/openinterpreter69k3 repos~4.2kAutomated safety check: PassApache-2.0
Code Review ChecklistshareAI-lab/learn-claude-code78k5 repos~1.1kAutomated safety check: PassMIT

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More from dyoshikawa/rulesync

All 40 skills in this repo

  • Rulesync Feature Research

    dyoshikawa/rulesync

    Maps rulesync feature implementations to upstream coding-agent documentation.

    1.5k GitHub stars~1.8k tokensUpdated today
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  • Babysit Dependabot PR

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    1.5k GitHub stars~1.3k tokensUpdated today
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  • Commit Push PR

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    Commit current changes, push to remote, and create or update a pull request.

    1.5k GitHub stars~458 tokensUpdated today
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  • Git Worktree Runner

    dyoshikawa/rulesync

    Manages git worktrees using git-worktree-runner (gtr). An agent skill from dyoshikawa/rulesync.

    1.5k GitHub stars~1.3k tokensUpdated today
    Auto-check: notes

  • Goal PR

    dyoshikawa/rulesync

    Drive a pull request to a clean state and merge it: run the review-pr skill, fix every mid-or-above finding, and repeat until no mid-or-above findings remain, then merge.

    1.5k GitHub stars~1.4k tokensUpdated today
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  • Goal Release

    dyoshikawa/rulesync

    Cut a release end to end: use the draft-release skill to open the release PR and draft GitHub release, wait for CI to turn green, run the merge-pr skill to merge the release PR, then update the…

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Categories

Questions about Explain PR

What does Explain PR do?

Explain a PR: the background problem and the proposed solution. Explain PR is an agent skill from dyoshikawa/rulesync.

When should I use Explain PR?

Explain PR fits situations like: development work in your project.

How do I install Explain PR in Claude Code?

Run `npx skills add dyoshikawa/rulesync --skill explain-pr -a claude-code`. Or copy the skill folder (.rulesync/skills/explain-pr in dyoshikawa/rulesync) into .claude/skills/explain-pr in your project. Claude Code loads it when a task matches its description.

How do I install Explain PR in Codex?

Run `npx skills add dyoshikawa/rulesync --skill explain-pr -a codex`. Or copy the skill folder (.rulesync/skills/explain-pr in dyoshikawa/rulesync) into .agents/skills/explain-pr in your project. Codex loads it when a task matches its description.

Can I use Explain PR in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add dyoshikawa/rulesync --skill explain-pr -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/explain-pr, .gemini/skills/explain-pr, .github/skills/explain-pr and .opencode/skills/explain-pr in your project.

What does Explain PR need to run?

Going by SKILL.md and its folder, Explain PR needs the command-line tools its instructions call (gh).

Does Explain PR access the network?

SKILL.md contains no URLs. Its commands use gh, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Explain PR safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Explain PR use?

Explain PR is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Explain PR use?

About 211 tokens (SKILL.md is roughly 844 characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Explain PR?

Skills that share tags, products or a category with Explain PR: Vercel Composition Patterns (supabase/supabase, 111k stars), Finishing a Development Branch (obra/superpowers, 296k stars), Typescript Advanced Types (rolling-scopes/rsschool-app, 10k stars) and PR Babysitter (openinterpreter/openinterpreter, 69k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Explain PR?

dyoshikawa (a GitHub user) maintains it in dyoshikawa/rulesync, which has 1,507 GitHub stars. The repository holds 40 skills in this directory. The repository was last updated on October 8, 2026.

Source: dyoshikawa/rulesync on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.