Skill Creator
Skill Verified ActiveCreate new skills, modify and improve existing skills, and measure skill performance. Use when users want to create a skill from scratch, edit, or optimize an existing skill, run evals to test a skill, benchmark skill performance with variance analysis, or optimize a skill's description for better triggering accuracy.
Empower users to efficiently build, refine, and validate AI skills, ensuring they are effective and accurate for their intended tasks.
Features
- Create new AI skills from scratch
- Modify and improve existing AI skills
- Measure AI skill performance with evaluations
- Benchmark skill performance with variance analysis
- Optimize skill descriptions for better triggering accuracy
Use Cases
- When a user wants to develop a new skill for a specific task.
- When a user has an existing skill that needs refinement or optimization.
- When a user needs to quantitatively assess the performance of a skill.
- When a user wants to ensure a skill triggers accurately for relevant prompts.
Non-Goals
- Directly executing arbitrary code outside the defined skill development process.
- Providing a generic chatbot interface without a focus on skill creation.
- Automating the entire skill creation process without user input or review.
Workflow
- Capture user intent for skill creation
- Interview user and research existing MCPs
- Write draft SKILL.md (description, instructions)
- Define output formats and examples
- Create test cases and run evaluations (with/without skill)
- Analyze results and grade runs
- Improve skill based on feedback and re-run evaluations
- Optimize skill description for triggering accuracy
- Package and present the final skill
Practices
- Iterative skill development
- Prompt engineering
- Evaluation design
- Performance benchmarking
Prerequisites
- Access to Claude Code or similar LLM environment
Installation
First, add the marketplace
/plugin marketplace add anthropics/skills/plugin install skills@anthropic-agent-skillsQuality Score
VerifiedTrust Signals
Similar Extensions
Master Claude for Legal
100Master skill for legal teams using Claude. Loads the right reference for the user's question (privilege configuration, MCP hardening, verification, long documents, practice-area patterns, skill authoring) and routes to specialized starter skills (NDA triage, version diff, meeting brief, citation verification, status synthesis). Auto-invokes when the user mentions legal work, contracts, redlines, NDAs, privilege, attorney-client, court filings, depositions, regulatory compliance, or asks how to set up Claude for a law firm or in-house legal team.
Project Session Manager
100Worktree-first dev environment manager for issues, PRs, and features with optional tmux sessions
Public Google Drive
100Create public Google Docs or Google Sheet files without requiring OAuth. Use this skill to create and edit Google Docs and Sheets, no Google sign-in required. Documents are viewable at shareable links. Registration is automatic on first use.
Oh My Claudecode
100Process-first advisor routing for Claude, Codex, or Gemini via `omc ask`, with artifact capture and no raw CLI assembly
Use My Browser
100Use when work depends on the user's live browser session or visible rendered state rather than static fetches, especially for browser debugging contexts or DevTools-selected elements or requests, logged-in dashboards or CMS flows, localhost apps, forms, uploads, downloads, media inspection, DOM or iframe inspection, Shadow DOM, or browser failures that look like soft 404s, auth walls, anti-bot checks, or rate limits.
X Twitter Scraper
100Use when the user needs X (Twitter) data or confirmation-gated X actions through Xquik: tweet search, user lookup, follower extraction, media download, monitoring, webhooks, MCP, SDKs, posting, likes, DMs, and profile updates. Requires a Xquik API key. Never ask for X login material.