
Render new ANSI tables from a data source. Trigger ONLY when asked to CREATE/DISPLAY/PRINT tabular data (CSV, parquet, dataframes, analysis results, sweep matrices, grids). Do NOT trigger when merely referencing or discussing an existing table.
Use this skill whenever the user wants to create, read, edit, or manipulate Word documents (.docx files). Triggers include: any mention of 'Word doc', 'word document', '.docx', or requests to produce professional documents with formatting like tables of contents, headings, page numbers, or letterheads. Also use when extracting or reorganizing content from .docx files, inserting or replacing images in documents, performing find-and-replace in Word files, working with tracked changes or comments, or converting content into a polished Word document. If the user asks for a 'report', 'memo', 'letter', 'template', or similar deliverable as a Word or .docx file, use this skill. Do NOT use for PDFs, spreadsheets, Google Docs, or general coding tasks unrelated to document generation.
Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, artifacts, posters, or applications (examples include websites, landing pages, dashboards, React components, HTML/CSS layouts, or when styling/beautifying any web UI). Generates creative, polished code and UI design that avoids generic AI aesthetics.
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.
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.).
Use this skill any time a .pptx file is involved in any way — as input, output, or both. This includes: creating slide decks, pitch decks, or presentations; reading, parsing, or extracting text from any .pptx file (even if the extracted content will be used elsewhere, like in an email or summary); editing, modifying, or updating existing presentations; combining or splitting slide files; working with templates, layouts, speaker notes, or comments. Trigger whenever the user mentions "deck," "slides," "presentation," or references a .pptx filename, regardless of what they plan to do with the content afterward. If a .pptx file needs to be opened, created, or touched, use this skill.
Guide users through a structured workflow for co-authoring documentation. Use when user wants to write documentation, proposals, technical specs, decision docs, or similar structured content. This workflow helps users efficiently transfer context, refine content through iteration, and verify the doc works for readers. Trigger when user mentions writing docs, creating proposals, drafting specs, or similar documentation tasks.
Knowledge and utilities for creating animated GIFs optimized for Slack. Provides constraints, validation tools, and animation concepts. Use when users request animated GIFs for Slack like "make me a GIF of X doing Y for Slack."
Create 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.
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.
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.
Use when creating agent teams (or agent squads), spawning teammates, or coordinating parallel work that benefits from inter-agent communication. Applies when the user asks for a "agent team" or "agent squad", or when the task involves competing hypotheses, parallel review, cross-layer coordination, or multi-component features where agents need to discuss findings. Do not use for subagents or background agents.
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.
Build apps with the Claude API or Anthropic SDK. TRIGGER when: code imports `anthropic`/`@anthropic-ai/sdk`/`claude_agent_sdk`, or user asks to use Claude API, Anthropic SDKs, or Agent SDK. DO NOT TRIGGER when: code imports `openai`/other AI SDK, general programming, or ML/data-science tasks.
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).
Use this skill whenever the user wants to do anything with PDF files. This includes reading or extracting text/tables from PDFs, combining or merging multiple PDFs into one, splitting PDFs apart, rotating pages, adding watermarks, creating new PDFs, filling PDF forms, encrypting/decrypting PDFs, extracting images, and OCR on scanned PDFs to make them searchable. If the user mentions a .pdf file or asks to produce one, use this skill.
Autonomous coding workflow using Claude in a bubblewrap sandbox with iterative execution. Use when the user mentions a ralph loop, setting up a ralph loop, or designing prompts for autonomous work.
MUST invoke before ANY use of the Agent tool — whether the user requests it or you decide independently to delegate work to (parallel) subagents. Applies when spawning subagents, launching background agents, writing prompts for subagents, choosing between foreground and background execution, or deciding how many subagents to spawn. Do not use for agent teams or agent squads.
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.
Load a high-fidelity recap of a prior Claude Code session into the current session's context. The goal is to be LESS lossy than running /compact would be — the user is invoking this skill precisely because /compact discards detail they need. Use this when the user wants to "resume", "pick up", "continue", or "load context from" a previous session — especially a long one (hundreds of thousands of tokens) where actually resuming the session would be prohibitively expensive, or where the session was auto-compacted mid-flow and a lot of detailed work happened after the last compaction that another /compact pass would crush. Also trigger on phrases like "recap the last session", "what was I working on yesterday", "load the prior chat", or "/load-prior-session". The skill extracts via a subagent so the full transcript never enters the current session's context.
Merge the current PR (squash by default, or rebase if specified), delete the branch, checkout main, fetch and pull. Use when the user says "land", "land the PR", "merge the PR", "merge and clean up", "land it", or wants to finish/complete a PR.
Review a GitHub PR with a team of specialized agents covering architecture, correctness, security, tests, code quality, and integration. Use when the user asks to 'review a PR', 'review this PR', 'code review PR 1234', 'review PR #1234', 'what do you think of this PR', or pastes a GitHub PR URL and asks for feedback. Also trigger when the user says 'review' followed by a PR number.
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.
Run a deep multi-agent review of a GitHub PR — 6 specialized agents covering architecture, correctness, security, tests, code quality, and integration. ONLY trigger when the user's message contains the explicit phrase 'deep review' (e.g. 'deep review this PR', 'deep review PR #1234', 'do a deep review of 1234', '/deep-review'). Do NOT trigger on bare 'review', 'review this', 'review the PR', 'code review', 'what do you think of this PR', or pasted PR URLs without 'deep review' in the message — those are handled by the lighter /review skill. The literal phrase 'deep review' must appear in the user's message; absence of that phrase means do not invoke this skill.
Use this skill any time a spreadsheet file is the primary input or output. This means any task where the user wants to: open, read, edit, or fix an existing .xlsx, .xlsm, .csv, or .tsv file (e.g., adding columns, computing formulas, formatting, charting, cleaning messy data); create a new spreadsheet from scratch or from other data sources; or convert between tabular file formats. Trigger especially when the user references a spreadsheet file by name or path — even casually (like "the xlsx in my downloads") — and wants something done to it or produced from it. Also trigger for cleaning or restructuring messy tabular data files (malformed rows, misplaced headers, junk data) into proper spreadsheets. The deliverable must be a spreadsheet file. Do NOT trigger when the primary deliverable is a Word document, HTML report, standalone Python script, database pipeline, or Google Sheets API integration, even if tabular data is involved.
Convert the most recent code review in the conversation into a grouped numbered checklist (Decisions needed / Fixes / Polish) of issues to fix. Use this skill whenever the user wants to extract, list, summarize, or triage the issues a reviewer raised — including phrasings like "list the issues from that review", "make me a todo from the review", "turn the review into a checklist", "what did the review flag", "summarize that review as a list", "give me every nit from above", or "/review-todo". Trigger especially as a natural follow-up to /review, /deep-review, /security-review, /ultrareview, or any pasted PR / inline review the user wants to act on. The output is a numbered list of every concrete issue the review raised, grouped under bold section headings, with file:line references appended in parentheses, and decision items rendered with a `→` arrow callout below the description posing the specific question — and lettered choices below that when the reviewer named discrete alternatives.
--- name: re-explain description: Re-explain a concept from the ground up when an earlier explanation didn't land. Trigger aggressively whenever the user signals confusion about recent technical content — phrases like "i don't get it", "from scratch", "ground up", "explain again", "this makes no sense", "try again", "you need to work better", "what's X" (where X was something just mentioned), or invoking /re-explain directly. Also trigger on quieter cues like the user re-quoting a phrase from th