copilot-instructions: Skill for Claude Code

.github/skills/pr-description/SKILL.md

pr-description is a skill for Claude Code, Codex from pplancq/copilot-instructions. It costs 84 tokens per session (4,504 once invoked), scanned A, original, MIT.

A tool for preparing pull-request descriptions on GitHub, where a pull request proposes code changes for review and merging. It reads the project's template and examines the changes and related issue.

In plain words
What is it for?
Use it to generate or fill a pull-request template from the git diff, project instructions, branch information, and a linked GitHub issue.
Why use it?
It reduces the manual work of assembling a complete pull-request description and helps ensure the proposal matches the project's required format and issue.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

This is pplancq/copilot-instructions's own configuration. It tells Claude Code and Codex how to work on copilot-instructions itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything copilot-instructions configures →

Reuse

Borrowing it

Nothing to install: this file belongs to pplancq/copilot-instructions. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/pplancq/copilot-instructions/main/.github/skills/pr-description/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/pplancq/copilot-instructions

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.

agentmods badge for pr-description

README.md
[![agentmods](https://agentmods.dev/badge/skills/pplancq/copilot-instructions/pr-description/github.svg)](https://agentmods.dev/skills/pplancq/copilot-instructions/pr-description)
Your own site
<a href="https://agentmods.dev/skills/pplancq/copilot-instructions/pr-description"><img src="https://agentmods.dev/badge/skills/pplancq/copilot-instructions/pr-description/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.

agentmods 80×15 button for pr-description

Your own site · 80×15
<a href="https://agentmods.dev/skills/pplancq/copilot-instructions/pr-description"><img src="https://agentmods.dev/badge/skills/pplancq/copilot-instructions/pr-description.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 4,504 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00084 $0.04504
Opus 5.5 $0.00034 $0.01802
Sonnet 5.5 $0.00017 $0.00901
Haiku 4.5 $0.00008 $0.00450

Measured 1mo ago against content hash a5234215d27c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

pr-description scanned grade A 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 1mo 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -X POST \
.github/skills/pr-description/SKILL.md · 560 lines

How it starts

The opening of the file, as written. The whole thing — 560 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Pull Request Description Generator

Automatically generate comprehensive pull request descriptions that follow the project's PR template (.github/PULL_REQUEST_TEMPLATE.md).

When to Use This Skill

Activate this skill when the user asks to:

  • "Generate a PR" or "Create a PR"
  • "Open a pull request"
  • "Create pull request"
  • "Generate a PR description"
  • "Fill out the PR template"
  • "Write a description for my changes"

Prerequisites

  • Working git repository with commits on a feature branch
  • Changes committed to the current branch
  • Access to the project's .github/PULL_REQUEST_TEMPLATE.md template

Main Branch Detection

The skill needs to identify the main branch to generate accurate diffs. Follow this priority:

  1. User-provided: If the user specifies the main branch name (e.g., "main", "master", "develop"), use it
  2. Project instructions: Check .github/copilot-instructions.md for default branch configuration
  3. Git default: Use git symbolic-ref refs/remotes/origin/HEAD to detect the default branch
  4. Fallback: Default to "main" if detection fails
  5. Ask user: If uncertain, prompt the user to confirm the main branch name

Step-by-Step Workflow

Step 1: Get GitHub Issue Link

If the user hasn't provided a GitHub issue link, ask for it:

Prompt: "What is the GitHub issue link for this PR? (e.g., https://github.com/owner/repo/issues/123 or just #123)"

Accepted formats:

  • Full URL: https://github.com/owner/repo/issues/123
  • Short format: #123
  • Just number: 123

Step 2: Read GitHub Issue

Use the GitHub MCP tools to read the issue content:

# Extract issue number from the link
# Then use GitHub API to read issue details

Extract from the issue:

  • Title: Use as context for PR title
  • Description: Understand the problem/feature request
  • Acceptance criteria: Verify if changes align with expected outcome
  • Labels: Determine type of change (bug, feature, enhancement)
  • Related context: Any linked PRs, discussions, or references

Read the full file on GitHub · 560 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. 1mo ago First seen · 560 lines · 84 tokens per session scan A a5234215d27c

Subscribe to this mod's changes

pr-description is a skill published in the GitHub repository pplancq/copilot-instructions (4 stars, last pushed 8mo ago), licensed MIT. It adds 84 tokens to every session and 4,504 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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