Agent Skills

claude-api

✓★ 158,100

by anthropic

Claude API integration for building LLM-powered applications across Python, TypeScript, Java, Go, Ruby, C#, and PHP. Defaults to Claude Opus 4.6 with adaptive thinking and streaming; supports tool use, structured outputs, batches, and file uploads through a single /v1/messages endpoint Language detection automatically routes you to the correct SDK documentation; includes decision trees for choosing between single API calls, workflows with tool use, and agentic loops Tool runner (beta in most...

doc-coauthoring

✓★ 158,100

by anthropic

Structured workflow for collaboratively authoring documentation, proposals, specs, and similar content. Guides users through three stages: Context Gathering (closing knowledge gaps), Refinement & Structure (building sections iteratively), and Reader Testing (validating the doc works for fresh readers) Supports integration with shared documents, team channels, and templates to pull in context directly when connectors are available Uses brainstorming and curation cycles for each section, with...

web-artifacts-builder

✓★ 158,100

by anthropic

Multi-component React artifacts for Claude with bundling, state management, and shadcn/ui component library. Scaffolds React 18 + TypeScript projects with Vite, Tailwind CSS, and 40+ pre-installed shadcn/ui components via automated initialization script Bundles complete artifacts into single self-contained HTML files with inlined assets, ready for Claude artifact display Includes design guidance to avoid common "AI slop" patterns like excessive centering, purple gradients, and uniform...

Brand Guidelines

✓★ 158,000

by Anthropic

Applies Anthropic's official brand colors and typography to any sort of artifact that may benefit from having Anthropic's look-and-feel. Use it when brand colors or style guidelines, visual formatting, or company design standards apply. license: Complete terms in LICENSE.txt

Frontend Design

✓★ 158,000

by Anthropic

Generates distinctive, production-grade frontend interfaces that avoid generic AI aesthetics.

Slack Gif Creator

✓★ 158,000

by Anthropic

Toolkit for creating animated GIFs optimized for Slack, with validators for size constraints and composable animation primitives. This skill applies when users request animated GIFs or emoji animations for Slack from descriptions like "make me a GIF for Slack of X doing Y". license: Complete terms in LICENSE.txt

Theme Factory

✓★ 158,000

by Anthropic

Toolkit for styling artifacts with a theme. These artifacts can be slides, docs, reportings, HTML landing pages, etc. There are 10 pre-set themes with colors/fonts that you can apply to any artifact that has been creating, or can generate a new theme on-the-fly. license: Complete terms in LICENSE.txt

Algorithmic Art

✓★ 158,000

by Anthropic

Creating algorithmic art using p5.js with seeded randomness and interactive parameter exploration. Use this when users request creating art using code, generative art, algorithmic art, flow fields, or particle systems. Create original algorithmic art rather than copying existing artists' work to avoid copyright violations. license: Complete terms in LICENSE.txt

Canvas Design

✓★ 158,000

by Anthropic

Create beautiful visual art in .png and .pdf documents using design philosophy. You should use this skill when the user asks to create a poster, piece of art, design, or other static piece. Create original visual designs, never copying existing artists' work to avoid copyright violations. license: Complete terms in LICENSE.txt

Docx

✓★ 158,000

by Anthropic

Comprehensive document creation, editing, and analysis with support for tracked changes, comments, formatting preservation, and text extraction. When Claude needs to work with professional documents (.docx files) for: (1) Creating new documents, (2) Modifying or editing content, (3) Working with tracked changes, (4) Adding comments, or any other document tasks" license: Proprietary. LICENSE.txt has complete terms

Internal Comms

✓★ 158,000

by Anthropic

A set of resources to help me write all kinds of internal communications, using the formats that my company likes to use. Claude should use this skill whenever asked to write some sort of internal communications (status reports, leadership updates, 3P updates, company newsletters, FAQs, incident reports, project updates, etc.). license: Complete terms in LICENSE.txt

MCP Builder

✓★ 158,000

by Anthropic

Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK). license: Complete terms in LICENSE.txt

Artifacts Builder

✓★ 158,000

by Anthropic

Suite of tools for creating elaborate, multi-component claude.ai HTML artifacts using modern frontend web technologies (React, Tailwind CSS, shadcn/ui). Use for complex artifacts requiring state management, routing, or shadcn/ui components - not for simple single-file HTML/JSX artifacts. license: Complete terms in LICENSE.txt

PDF

✓★ 158,000

by Anthropic

Comprehensive PDF manipulation toolkit for extracting text and tables, creating new PDFs, merging/splitting documents, and handling forms. When Claude needs to fill in a PDF form or programmatically process, generate, or analyze PDF documents at scale. license: Proprietary. LICENSE.txt has complete terms

Webapp Testing

✓★ 158,000

by Anthropic

Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs. license: Complete terms in LICENSE.txt

XLSX

✓★ 158,000

by Anthropic

Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization. When Claude needs to work with spreadsheets (.xlsx, .xlsm, .csv, .tsv, etc) for: (1) Creating new spreadsheets with formulas and formatting, (2) Reading or analyzing data, (3) Modify existing spreadsheets while preserving formulas, (4) Data analysis and visualization in spreadsheets, or (5) Recalculating formulas" license: Proprietary. LICENSE.txt has complete terms

PPTX

✓★ 158,000

by Anthropic

Presentation creation, editing, and analysis. When Claude needs to work with presentations (.pptx files) for: (1) Creating new presentations, (2) Modifying or editing content, (3) Working with layouts, (4) Adding comments or speaker notes, or any other presentation tasks" license: Proprietary. LICENSE.txt has complete terms

Skill Creator

✓★ 158,000

by Anthropic

Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Claude's capabilities with specialized knowledge, workflows, or tool integrations. license: Complete terms in LICENSE.txt

writing-great-skills

★ 156,200

by mattpocock

Reference for writing and editing skills well — the vocabulary and principles that make a skill predictable.

setup-pre-commit

★ 156,200

by mattpocock

Set up Husky pre-commit hooks with lint-staged (Prettier), type checking, and tests in the current repo. Use when user wants to add pre-commit hooks, set up Husky, configure lint-staged, or add commit-time formatting/typechecking/testing.

migrate-to-shoehorn

★ 156,200

by mattpocock

Migrate test files from `as` type assertions to @total-typescript/shoehorn. Use when user mentions shoehorn, wants to replace `as` in tests, or needs partial test data.

teach

★ 156,200

by mattpocock

Teach the user a new skill or concept, within this workspace.

codebase-design

★ 156,200

by mattpocock

Shared vocabulary for designing deep modules. Use when the user wants to design or improve a module's interface, find deepening opportunities, decide where a seam goes, make code more testable or AI-navigable, or when another skill needs the deep-module vocabulary.

wizard

★ 156,200

by mattpocock

Generate an interactive bash wizard that walks a human through a manual procedure — third-party setup, a one-off migration, an A→B state transition — opening URLs, capturing values, confirming each step, and writing .env files and GitHub Actions secrets.

implement

★ 156,200

by mattpocock

Implement a piece of work based on a PRD or set of issues.

writing-fragments

★ 156,200

by mattpocock

Grilling session that mines the user for fragments — heterogeneous nuggets of writing (claims, vignettes, sharp sentences, half-thoughts) — and appends them to a single document as raw material for a future article. Use when the user wants to develop ideas before imposing structure, or mentions "fragments", "ideate", or "raw material" for writing.

writing-beats

★ 156,200

by mattpocock

Shape an article as a journey of beats, choose-your-own-adventure style. The user picks a starting beat from the raw material, you write only that beat, then offer options for where to pivot next, beat by beat, until the article reaches a natural end. Use when the user has raw material and wants to assemble it as a narrative rather than an argument.

writing-shape

★ 156,200

by mattpocock

Take a markdown file of raw material and shape it into an article through a conversational session — drafting candidate openings, growing the piece paragraph by paragraph, arguing about format (lists, tables, callouts, quotes) at each step. Use when the user has a pile of notes, fragments, or a rough draft and wants help turning it into something publishable.

scaffold-exercises

★ 156,200

by mattpocock

Create exercise directory structures with sections, problems, solutions, and explainers that pass linting. Use when user wants to scaffold exercises, create exercise stubs, or set up a new course section.

improve-codebase-architecture

★ 156,200

by mattpocock

Scan a codebase for deepening opportunities, present them as a visual HTML report, then grill through whichever one you pick.