Anthropic: skills, plugins and MCP servers

frontend-design official anthropics skill This skill guides intentional visual design for new interfaces and redesigns. Use it when a generic generated UI is not enough. Claude Code Claude.ai 1,025,790installs skill-creator official anthropics skill Creates and refines skills, then tests them with prompts, evaluations, and performance checks. Claude Code Claude.ai 414,180installs pptx official anthropics skill This skill helps create, read, and edit .pptx files and .potx templates. Use it when building a deck or extracting slide text. Claude Code Claude.ai 241,433installs pdf official anthropics skill This skill lets an agent read, create, and edit PDF files, including forms and scanned documents. Use it when PDF work is part of the task. Claude Code Claude.ai 216,041installs docx official anthropics skill This skill creates, reads, and edits Word documents and templates. Use it for reports, letters, and files that need headings, tables, or page numbers. Claude Code Claude.ai 206,304installs xlsx official anthropics skill Creates, reads, edits, and converts spreadsheet files. Use it when the requested deliverable is an Excel workbook or another tabular file. Claude Code Claude.ai 187,223installs webapp-testing official anthropics skill This skill tests local web apps with Playwright, helping agents debug UI behavior, capture screenshots, and inspect browser logs. Claude Code Claude.ai 186,758installs mcp-builder official anthropics skill This skill walks through building an MCP server in TypeScript or Python, from reading the protocol spec to writing tests and evaluation questions. Claude Code Claude.ai 130,949installs canvas-design official anthropics skill Builds posters and visual art in .png and .pdf by first writing a design philosophy, then expressing it on the canvas. Claude Code Claude.ai 121,543installs web-artifacts-builder official anthropics skill This skill builds complex claude.ai HTML artifacts with React, Tailwind CSS, and shadcn/ui. Use it for interfaces with state or routing. Claude Code Claude.ai 112,122installs brand-guidelines official anthropics skill Applies Anthropic's official brand colors and fonts to documents, slides and other artifacts. Useful whenever something needs to match the company look. Claude Code Claude.ai 109,043installs theme-factory official anthropics skill Applies preset color palettes and font pairs to slides, documents, and HTML pages. Use it when an artifact needs one consistent visual style. Claude Code Claude.ai 94,921installs doc-coauthoring official anthropics skill Guides document drafting through context collection, section work, and a reader check. Use it for specs, RFCs, proposals, and decision documents. Claude Code Claude.ai 93,900installs algorithmic-art official anthropics skill Creates p5.js generative art with seeded randomness and adjustable parameters. Use it for flow fields, particle systems, and code-based visual experiments. Claude Code Claude.ai 89,081installs internal-comms official anthropics skill internal-comms helps Claude write internal communications in the formats your company uses, from status reports to FAQs and incident reports. Claude Code Claude.ai 79,929installs slack-gif-creator official anthropics skill This skill helps create animated GIFs for Slack and check their parameters. Use it for custom emoji or GIFs shared in messages. Claude Code Claude.ai 75,256installs discernment-nudge official anthropics skill Adds follow-up questions that test facts, reasoning, and missing context after answers a user may act on. Use it for advice, plans, estimates, and other consequential drafts. Claude Code Claude.ai 12,227installs academy-guide official anthropics skill Matches Claude learning questions with relevant Claude Academy materials. Use it for onboarding, feature training, and team education requests. Claude Code Claude.ai 11,893installs code-reviewer official Anthropic subagent Reviews code changes against CLAUDE.md project rules and flags material defects. Run it before a commit or pull request. Claude Code 31,050installs code-reviewer official Anthropic subagent This subagent checks code changes for bugs, security issues, and project-rule violations. Use it when a review should focus on findings that matter. Claude Code 31,050installs claude-md-improver official Anthropic skill This skill audits CLAUDE.md files, produces a quality report, and suggests focused edits. Use it when project instructions need a careful review. Claude Code 12,558installs security-auditor official Anthropic subagent This subagent searches code for security flaws and gives engineers concrete fixes. Use it to review a project before hardening or modernization work. Claude Code 10,718installs test-engineer official Anthropic subagent This subagent captures legacy behavior in tests and compares it with a rewritten implementation. Use it before changing existing modules. Claude Code 9,715installs claude-automation-recommender official Anthropic skill Analyzes a codebase and recommends Claude Code hooks, subagents, skills, plugins, and MCP servers. Useful when setting up a project or refining an existing workflow. Claude Code 9,057installs playground official Anthropic skill Builds interactive HTML playgrounds with controls, a live preview, and a generated prompt. Use it when a topic is easier to explore visually than through plain text. Claude Code 7,967installs agent-development official Anthropic skill This skill guides you through creating agents for Claude Code plugins, from trigger conditions to system prompts and tool access. Use it when adding a subagent to a plugin. Claude Code 7,353installs skill-development official Anthropic skill Guides the design of skills for Claude Code plugins, from gathering use cases to organizing files and metadata. Useful when building a new skill or revising an existing one. Claude Code 7,219installs hook-development official Anthropic skill Guides the development of Claude Code plugin hooks to intercept tool calls, validate output, and enforce task completion checks. Claude Code 7,028installs mcp-integration official Anthropic skill This skill shows how to connect MCP servers to Claude Code plugins and expose their tools. Use it when a plugin needs access to an API, database, or file system. Claude Code 6,994installs command-development official Anthropic skill This skill explains how to build Claude Code slash commands with arguments, YAML frontmatter, and file references. Use it when shaping repeatable command workflows. Claude Code 6,962installs writing-hookify-rules official Anthropic skill This skill guides you through writing hookify rules for Claude Code, from choosing an event to defining match conditions and the message shown when a rule triggers. Claude Code 6,941installs plugin-structure official Anthropic skill This skill explains how Claude Code plugins are organized, including their manifest, component directories, discovery, and path configuration. Claude Code 6,855installs plugin-settings official Anthropic skill A skill that documents the .claude/plugin-name.local.md pattern for storing plugin settings and reading them from hooks, commands and agents. Claude Code 6,827installs build-mcp-server official Anthropic skill This skill helps design an MCP server for Claude Code by clarifying the use case, choosing deployment, and shaping the tool interface. Claude Code 6,711installs build-mcp-app official Anthropic skill Learn to add interactive forms, pickers and visual widgets to an MCP server. Use it when text or JSON alone is not enough for the task. Claude Code 6,458installs build-mcpb official Anthropic skill Packages a local MCP server with Node or Python so users can install it without setting up a runtime first. Claude Code 6,229installs code-review official Anthropic command Runs a multi-agent code review on a pull request using the gh CLI. It checks CLAUDE.md guidelines and weeds out false positives. Claude Code 5,537installs commit official Anthropic command Creates a git commit based on current branch changes. Helps stage and commit diffs in Claude Code without typing commit messages. Claude Code 4,121installs math-olympiad official Anthropic skill Solves competition math problems from IMO, Putnam, and USAMO using adversarial verification and pure reasoning without computation tools. Claude Code 4,024installs access official anthropics skill This skill manages Telegram channel access through a local JSON file. Use it for pairings, allowlists, and DM or group policy changes. Claude Code 3,867installs