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skill Claude Code

pr — Claude Code skill: what it does, how to install

This skill structures pull request bodies with a summary, evidence, and merge-risk notes. Use it when reviewers need a compact view of what changed and how the change was checked.

Install into Claude Code · Plugin marketplace All methods and platforms ↓
/plugin marketplace add mattpocock/skills
/plugin install mattpocock-skills@mattpocock
Open on GitHub

What pr does

For Summary, the skill suggests a format that fits the change: pseudocode, a call tree, a component or file tree, Mermaid, or a diff. Evidence should compare before and after, using examples such as screenshots, output, or test results. Merge Danger covers whether the merge is reversible and the potential blast radius.

Keep the prose brief, skip the preamble, and use the project’s terms from GLOSSARY.md. It suits authors who want reviewers to see both the shape of a change and evidence that it works. Skip it if your team prefers unstructured PR descriptions.

What it helps with

  • Show the call flow affected by a change
  • Compare output before and after a fix
  • Map component or file responsibilities in a PR
  • Describe whether a merge is reversible

Example prompts for the agent

  • Write a PR body for this change and show the call flow in Summary.
  • Add before-and-after test results to Evidence.
  • Use a diff for Summary and assess Merge Danger.

How to install pr

1Plugin marketplace

/plugin marketplace add mattpocock/skills
/plugin install mattpocock-skills@mattpocock

This installs the whole mattpocock-skills plugin with all its skills

2Skills CLI (Vercel)

npx skills add mattpocock/skills --skill pr -a claude-code

3Manually: put the files in place

~/.claude/skills/pr/SKILL.md

Copy the whole skill folder; for one project use .claude/skills/pr/

From the same set32

The whole set →
grill-me Matt Pocock grill-me interviews you about a plan or design to expose gaps and sharpen decisions. Use it before implementation starts. Claude Code 1,424,476installs grill-with-docs Matt Pocock This skill interviews you about a plan or design and creates ADRs and a glossary along the way. Use it when decisions need sharper definition. Claude Code 1,219,756installs improve-codebase-architecture Matt Pocock This skill scans a codebase for architectural friction, then builds a visual HTML report with refactoring candidates. Use it before a deeper architecture review. Claude Code 1,163,035installs tdd Matt Pocock Guides the red-green TDD loop: ensures tests are written first, keep them at public interfaces, and avoid coupling to implementation details. Claude Code 1,141,062installs setup-matt-pocock-skills Matt Pocock This skill configures a repository for Matt Pocock's engineering skills by setting its issue tracker, triage labels, and domain docs layout. Run it before using the other skills. Claude Code 1,052,851installs handoff Matt Pocock Creates a handoff document from the current conversation so another agent can continue the work. Use it when a task moves to a new session or agent. Claude Code 1,038,491installs triage Matt Pocock This skill moves issues and external PRs through triage states, verification, and agent briefs. It fits maintainers managing an issue queue. Claude Code 990,453installs prototype Matt Pocock Creates throwaway prototypes for checking state logic or exploring UI before committing the decision to the main codebase. Claude Code 986,201installs

Similar

Questions about pr

How do I install pr in Claude Code?

Add the marketplace with /plugin marketplace add mattpocock/skills, then install with /plugin install mattpocock-skills@mattpocock. The provided options also include npx skills add mattpocock/skills --skill pr -a claude-code.

What does the pr skill do?

It helps write PR bodies with Summary, Evidence, and Merge Danger sections. For the summary, it recommends a representation that fits the change, such as a file tree or diff.

What can I use as evidence in a PR?

The skill calls for concrete before-and-after evidence, such as screenshots, program output, or test results.

Source text

SKILL.md · MIT
---
name: pr
description: "Use when writing a PR body."
metadata:
  credits:
    skill: show-me
    author: Dex Horthy
    organisation: Humanlayer
    url: "https://github.com/humanlayer/skills/blob/main/plugins/show-me/skills/show-me/SKILL.md"
---

Use this template for writing the PR body:

```markdown
## Summary

<diagram, diff-sketch, or tree>

## Evidence

- **Before:** <screenshot/output/failing test run>
  **After:** <screenshot/output/passing test run>

## Merge Danger

**Door:** <one-way or two-way>

<optional: description>

**Blast Radius:** <one-word description>

<optional: potential ramifications of merge>
```

## Sections

Skip all preambles and keep prose brief. Use the user's domain language from `GLOSSARY.md`.

### Summary

Pick the smallest view that makes the key point clear.

- Show logic or an algorithm as pseudocode:

```text
on(save)
  if content is unchanged
    return cached result
  write new content
  return fresh result
```

- Show runtime control flow as a call tree:

```text
submitForm
  createSession
    persistPrompt
    launchAgent
  navigateToSession
```

- Show UI structure as a component tree, including state and module boundaries that matter:

```text
<SessionPage> (apps/example/src/routes/session.tsx)
  useSessionEvents()
  <SessionToolbar>
    <RunSkillButton> (packages/ui)
```

- Show file responsibility or a broad refactor as a shallow file tree:

```text
src/
├── commands/       # parses user actions
├── sessions/       # owns session state
└── transport/      # sends API requests
```

- Show component interaction, control flow, or data flow with Mermaid:

```mermaid
sequenceDiagram
    participant User
    participant UI
    participant Daemon
    User->>UI: choose command
    UI->>Daemon: send expanded prompt
    Daemon-->>UI: stream result
```

- Use `diff` when the point is what changes and the surrounding shape already exists. Match the diff shape to the topic.

For a component change:

```diff
 <SessionPage>
   useSessionEvents()
   <SessionToolbar>
+    <RunSkillButton />
   <SessionTimeline>
+    <SkillResultCard />
```

For a file-layout change:

```diff
 src/
 ├── commands/
+│   └── show-me.ts       # expands the slash command
 ├── sessions/
-└── transport.ts
+└── transport/
+    ├── client.ts
+    └── stream.ts
```

For a call-tree or call-stack change:

```diff
 submitForm
   createSession
     persistPrompt
+    expandSkillMention
     launchAgent
-  navigateToSession
+  navigateToSession
+    subscribeToEvents
```

For a state or control-flow change:

```diff
 on(save)
-  write content
+  if content is unchanged
+    return cached result
+  write new content
+  invalidate cache
```

- Show the whole block when most of it is new, when omitted context would hide ownership or order, or when the user needs a copyable target shape:

```ts
function expandSkill(command: string): string {
  const skillName = command.slice(1);
  return `use the ${skillName} skill`;
}
```

#### Guidance

Place each visual next to the short text it supports. Keep only the calls, files, props, states, and boundaries needed to answer the user's current question or the options to resolve the current discussion point.

You may use one of these, you may use several, it is unlikely you will use all of them. Use your judgement and don't overwhelm the user.

### Evidence

Concrete evidence that the change works. Show a before and after.

Screenshots are S-tier - when the environment is set up for it and the change is visual.

Execution-based evidence is A-tier. Test results, console output. Show the exact test that now fails and passes, using pseudocode.

### Merge Danger

Describe whether it's a one-way or two-way door. You can walk back through two-way doors, but not one-way doors. A PR that is cheap to roll back is lower risk. Changes that involve destructive actions or hard-to-reverse decisions are one-way doors.

The blast radius is the potential impact or scope of the changes introduced by this PR. Consider all possibilities. Examples are layout shift, breakages for consumers, mobile responsiveness, etc.

© Matt Pocock · MIT · mattpocock/skills

See also

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