Claude Skills for Copilot

GitHub Copilot agent skills adapted from the official Claude plugins.

Skills

Usage

Slash command — type / to see available skills, then select or type the skill name (e.g., /code-review).

Auto-invocation — in agent mode, Copilot automatically uses skills relevant to your task.

Adaptation Details

All skills are adapted from anthropics/claude-plugins-official (Apache 2.0). The source plugins target Claude Code (CLI); these versions are rewritten for VS Code Copilot agent skills format.

Common changes

Every skill went through the following transformations:

Per-skill details

/code-review

Source: plugins/code-review/commands/code-review.md

The original is a PR-focused command that reads the diff via gh pr diff and spawns multiple Haiku sub-agents to review different aspects. It is tightly coupled to GitHub workflow — it requires an open PR and the gh CLI.

Changes:

• Removed all gh CLI usage; the skill now works on any file, directory, diff, or codebase passed as an argument
• Replaced named Anthropic model invocations with generic sub-agent calls
• Replaced CLAUDE.md with AGENTS.md as the project conventions file

/code-simplifier

Source: plugins/code-simplifier/agents/code-simplifier.md

The original agent is scoped to "recently modified files" and references Anthropic-internal project conventions (ES modules, arrow functions, specific test patterns). The model: claude-opus-4-5 instruction makes it a high-quality but heavyweight agent.

Changes:

• Removed hardcoded project-specific coding standards from the prompt body
• Broadened scope from "recently modified code" to any file, diff, or codebase segment specified by the user
• Converted from agent (with model:) to a skill

/comment-analyzer

Source: plugins/pr-review-toolkit/agents/comment-analyzer.md

The original agent embeds lengthy XML <example> transcripts inside the description frontmatter field to illustrate expected output. The body mixes free-form instruction with example scenarios.

Changes:

• Stripped all XML examples from the frontmatter description
• Restructured the body as a numbered analysis framework (comment types → accuracy check → completeness check → maintainability check → scoring)
• Added argument-hint for user-facing guidance

/feature-dev

Source: plugins/feature-dev/commands/feature-dev.md

The original command uses the Claude Code–specific TodoWrite built-in tool to manage a persistent task list, and receives the feature description via the $ARGUMENTS shell variable.

Changes:

• Replaced TodoWrite invocations with a generic "maintain a todo list" instruction
• Replaced $ARGUMENTS with a natural-language argument hint in the frontmatter
• Converted from command to skill format

/frontend-design

Source: plugins/frontend-design/skills/frontend-design/SKILL.md

This is the closest to a direct port — the source is already a SKILL.md intended for the Claude Code skill system, which shares a similar format to VS Code Copilot skills.

Changes:

• Removed the license: Complete terms in LICENSE.txt frontmatter field (not used by VS Code Copilot)
• Added argument-hint and user-invocable: true frontmatter fields
• Minor formatting normalisation (bullet indentation)

/review-toolkit

Sources:

• plugins/pr-review-toolkit/commands/review-pr.md — orchestrator command
• plugins/pr-review-toolkit/agents/ — 6 specialist agent files (code-reviewer, silent-failure-hunter, comment-analyzer, pr-test-analyzer, code-simplifier, type-design-analyzer)

The original is a PR review orchestrator: it reads a PR with gh pr view, then spawns the 6 specialist agents by filename. Each agent file is standalone and referenced by path.

Changes:

• Completely rewritten: dispatches the other 5 Copilot skills (not agent files) by skill name
• Removed all PR/GitHub context; works on any codebase, directory, or diff
• Replaced gh pr view with instructions to infer scope from argument or current workspace
• Added a summary table format for the final aggregated report

/silent-failure-hunter

Source: plugins/pr-review-toolkit/agents/silent-failure-hunter.md

The original agent has an extensive description field with XML <example> blocks showing sample review dialogues. The body defines detection patterns for swallowed errors and missing fallbacks.

Changes:

• Stripped XML examples from the frontmatter description
• Restructured the body as a numbered review process with explicit confidence threshold (report only if confidence ≥ 80)
• Added argument-hint for user-facing guidance

/test-analyzer

Source: plugins/pr-review-toolkit/agents/pr-test-analyzer.md

The original is named pr-test-analyzer and is framed around reviewing tests in the context of a pull request diff. It focuses on whether new tests were added for changed code.

Changes:

• Renamed from pr-test-analyzer to test-analyzer to reflect the broader, non-PR scope
• Removed all PR framing; the skill now reviews any test file, directory, or codebase
• Added DAMP (Descriptive And Meaningful Phrases) principles as an explicit evaluation criterion
• Added argument-hint for user-facing guidance

/type-design-analyzer

Source: plugins/pr-review-toolkit/agents/type-design-analyzer.md

The original agent has an informal instruction style and uses XML <example> transcripts in its description to illustrate expected output quality.

Changes:

• Replaced verbose description with a single-sentence summary
• Reformatted the analysis framework as numbered steps with a 4-dimension rating rubric (invariants, encapsulation, enforcement, expressiveness; each scored 1–10)
• Added argument-hint for user-facing guidance

License

This project is licensed under MIT.

Portions of the skill definitions are adapted from claude-plugins-official by Anthropic, which is licensed under the Apache License 2.0. Changes were made to adapt the content from Claude Code agent skills to VS Code Copilot agent skills format.