B12

B12 plugin with two skills: Website Generator (create a B12 website from a brief description) and B12 Website Editor (edit a live B12 website using Claude's browser access in Claude Cowork).

Other plugins

Frontend Design

Frontend design skill for UI/UX implementation

Superpowers

Core skills library for Claude Code: TDD, debugging, collaboration patterns, and proven techniques

Code Review

Automated code review for pull requests using multiple specialized agents with confidence-based scoring

Context7

Upstash Context7 MCP server for up-to-date documentation lookup. Connects to Context7's hosted remote MCP server (https://mcp.context7.com/mcp) — no local Node.js or npx required — to pull version-specific documentation and code examples directly from source repositories into your LLM context. Authenticate with Context7 when prompted.

Code Simplifier

Agent that simplifies and refines code for clarity, consistency, and maintainability while preserving functionality

Playwright

Browser automation and end-to-end testing MCP server by Microsoft. Enables Claude to interact with web pages, take screenshots, fill forms, click elements, and perform automated browser testing workflows.