Skills are custom instruction files that extend what Claude Code can do. You create a SKILL.md with a workflow you want Claude to follow, and it becomes a command you can call any time. The same skills work across Claude Code, Cursor, Gemini CLI, and Codex.
01. Skill Creator
Install this one first. It builds every other skill for you automatically. Tell it what you want a skill to do, it interviews you, researches the relevant docs, writes the SKILL.md, creates test cases, and spawns sub-agents to benchmark and improve it. You never have to write a skill from scratch.
02. Self-Healing
Claude automatically diagnoses and fixes its own errors without stopping. When it hits a problem it reads the error, finds the root cause, applies a fix, and continues. Sessions no longer die mid-task.
03. Frontend Design
Stops Claude producing generic AI-looking UI. Forces bold, production-grade design decisions on every component. If you build anything in React or Tailwind this is one of the highest impact installs available.
04. Webapp Testing
Opens your app in a real browser using Playwright and runs tests. Catches UI bugs Claude cannot see from reading code alone. Essential for any client-facing work.
05. MCP Builder
Describe any external API or service. Claude builds the full MCP server to connect it to your workflow. No more writing integration boilerplate from scratch.
06. Cost Reducer
Automatically identifies expensive operations before running them. Suggests cheaper alternatives, monitors token usage during the session, and tells you when to switch models or run /compact.
07. Superpowers
A meta-skill that gives Claude advanced capabilities in one install: structured thinking before complex decisions, automatic retry with different strategies on failure, context-aware file management that tracks which files matter to the current task, and smart diffing that previews changes before applying them. Think of it as upgrading Claude's default behavior across the board rather than adding a single new workflow.
08. Trail of Bits Security
A security-focused review skill built on Trail of Bits' methodology. Runs static analysis patterns across your changes looking for common vulnerability classes: injection flaws, insecure deserialization, hardcoded secrets, broken access controls. Different from Shannon (which runs live exploits against a staging URL). This one works purely on code, runs in seconds, and catches issues before they ever reach a deployed environment.
09. Researcher
Turns Claude into a research agent. Give it a topic, a library, or an API you're unfamiliar with, and it reads docs, pulls examples, and summarizes what you need to know before you start building. The output is structured: what the thing does, how to install it, the key APIs, the gotchas, and a starter snippet. Saves the 30-60 minutes you'd spend reading docs and Stack Overflow before writing the first line.
10. Figma-to-Code
Connects your Figma designs to Claude's code generation. Point it at a Figma frame and it extracts the layout, spacing, colors, typography, and component hierarchy, then generates the matching React + Tailwind code. Not pixel-perfect (no automated tool is), but it gets you 80-90% of the way there in seconds instead of manually translating a design file into components by hand. Works best with clean, well-structured Figma files that use auto-layout.