Skills

PR Description Skill

Use this skill to write the PR description (PR body) for any pull request opened...

Install

npx skills add microsoft/apm --skill pr-description-skill -g -a claude-code -y
Repository
microsoft/apm4.2k
Category
Testing
Updated
6d ago
License
MIT
Context cost
Mediumabout 3,000 tokens
Runs scripts
Yes, review before use

What it does

Use this skill to write the PR description (PR body) for any pull request opened against microsoft/apm. Produces one self-sufficient GitHub-Flavored Markdown artifact: TL;DR, Problem (WHY), Approach (WHAT), Implementation (HOW), 1-3 validated mermaid diagrams, explicit trade-offs, validation evidence, and a How-to-test section -- with every WHY-claim backed by a verbatim quote from PROSE or Agent Skills. Activate when the user asks to "write a PR description", "draft a PR body", "open a PR", "fill in the PR template", or any equivalent.

PR Description Skill -- Anchored, Concise, Validated PR Bodies

When to use

Trigger this skill on any of the following intents:

  • "write a PR description"
  • "draft a PR body"
  • "open a PR" / "open this PR" / "let's open the PR"
  • "fill in the PR template"
  • "summarize this branch as a PR"
  • "create the PR write-up"

Reusable for any PR against microsoft/apm. The output is one markdown file that the orchestrator pastes into gh pr create --body-file or surfaces to the maintainer.

Output charset rule (read this first)

The repo-wide encoding rule at .github/instructions/encoding.instructions.md constrains source files and CLI output to printable ASCII because Windows cp1252 terminals raise UnicodeEncodeError on anything else. PR comments are NOT source code and NOT CLI output -- they are rendered by GitHub's Primer engine, which expects UTF-8 GitHub-Flavored Markdown.

Two distinct rules therefore apply:

  1. Source files in this bundle (SKILL.md, assets/*) MUST stay ASCII. They live in the repo and are subject to .github/instructions/encoding.instructions.md.
  2. The PR body output the skill produces MUST be UTF-8 GitHub-Flavored Markdown. Use em dashes, smart punctuation, alerts, collapsibles, task lists, and Unicode where it improves readability. Mermaid diagram labels MAY use Unicode -- there is no constraint here. The output is consumed by GitHub's renderer, not by a Windows terminal.

A previous version of this skill incorrectly required ASCII in the PR body. That made the output unreadable: no alerts, no collapsibles for long evidence, no em dashes, no smart quotes. Reviewers had to scroll through hundreds of flat lines instead of scanning a body shaped by GFM features.

Concision targets (hard ceilings)

Read the whole SKILL.md on GitHub

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