Skills real projects publish on GitHub, most starred first. Each one says what it will make an agent do before you copy it.
AnthropicSkillanthropics/commerce-agents/plugins/commerce-builder/skills/commerce-evals/SKILL.md
Authoring and running behavioral evals for a shopping or merchant agent, covering the case shape, authoring rules, code graders and judges, the run pattern, and poisoned fixtures. Load when writing eval cases or rubrics or deciding how a suite runs.
AnthropicSkillanthropics/commerce-agents/plugins/commerce-builder/skills/commerce-merchant-operations/SKILL.md
The reference merchant agent, covering its flows, staged changes and host approval, metrics grounding, the analysis delegate, store memory, components, and marketplace rules. Load when building or reviewing an agent for the operators of a store, property, subscriber base, or venue.
AnthropicSkillanthropics/commerce-agents/plugins/commerce-builder/skills/commerce-prompt-caching/SKILL.md
The reference agents' cache-stable request assembly, covering the static system and per-request context split, the fixed tool list, the rolling conversation breakpoint, which config fields are prompt bytes, and verification. Load when writing or reviewing a commerce agent's prompt assembly, when cache reads are zero, or when a turn's latency or cost is the question.
AnthropicSkillanthropics/commerce-agents/plugins/commerce-builder/skills/commerce-trust-safety/SKILL.md
The rules the reference agents enforce in code for third-party content, writes, grounding, identity, and memory, each with its module, plus two adversarial-eval rules. Load when handling untrusted tool results, guarding a write tool, or scoping what an agent remembers.
AnthropicSkillanthropics/commerce-agents/plugins/commerce-builder/skills/commerce-ui-tools/SKILL.md
The reference presentation-tool contract, covering server-side enrichment, suggestion chips, the event stream, progressive rendering, both roles' built-in components, and adding a vertical component. Load when building or reviewing how a commerce agent's output reaches a frontend.
AnthropicSkillanthropics/commerce-agents/shopping-agent/skills/customer-care/SKILL.md
Help after a purchase or booking, covering the status of an order or delivery whether or not the customer names it, returns, refunds, exchanges, and cancellations, an item that arrived damaged, incomplete, or late, and questions about the store's terms or a membership. Not needed for finding, comparing, or choosing something new.
AnthropicSkillanthropics/commerce-agents/shopping-agent/skills/memory-personalization/SKILL.md
Requests about what is remembered, however short, from an ask to remember one thing to asks to say what is on file, correct it, or forget it; a bare save or an answer from the profile alone does not cover these. Also applying what the store already knows, recalling an older fact (a past recipient, a size, a recurring order) when it would change the pick, and deciding what should outlast the session. Not needed when the request carries no personal context to apply or keep.
AnthropicSkillanthropics/commerce-agents/shopping-agent/skills/planning-goals/SKILL.md
Planning a coordinated set of items toward a goal, an event, a trip, or a project, where the request only comes together as several purchases with a structure between them, and later changes to a plan you have presented. Not needed when the customer wants a single item, however carefully chosen.
AnthropicSkillanthropics/commerce-agents/shopping-agent/skills/purchase-research/SKILL.md
Teaching a customer how to choose before any candidates appear, when they ask what matters in a category, how two approaches to it differ, or where to begin. Not needed once the customer has named the thing they want, however considered the purchase (that is search work), nor for outfitting a space or an event (planning-goals).
AnthropicSkillanthropics/commerce-agents/shopping-agent/skills/search-discovery/SKILL.md
Turning a described need (several constraints, a gift, a choice between candidates already in view, a search that came back empty or sold out) into a shortlist and a pick. Not needed when one search for the thing the customer named answers the request, or when the customer wants to learn what matters in a category first (purchase-research).
AnthropicSkillanthropics/claude-agent-sdk-demos/email-agent/agent/.claude/skills/action-creator/SKILL.md
Creates user-specific one-click action templates that execute email operations when clicked in the chat interface. Use when user wants reusable actions for their specific workflows (send payment reminder to ACME Corp, forward bugs to engineering, archive old newsletters from specific sources).
AnthropicSkillanthropics/claude-agent-sdk-demos/email-agent/agent/.claude/skills/listener-creator/SKILL.md
Creates event-driven email listeners that monitor for specific conditions (like urgent emails from boss, newsletters to archive, package tracking) and execute custom actions. Use when user wants to be notified about emails, automatically handle certain emails, or set up email automation workflows.
AnthropicSkillanthropics/claude-agent-sdk-demos/excel-demo/agent/.claude/skills/xlsx/SKILL.md
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
AnthropicSkillanthropics/claude-agent-sdk-demos/research-agent/.claude/skills/executive-briefing/SKILL.md
Transforms research findings into executive-ready briefings. Automatically activated when user mentions 'executive', 'briefing', 'C-suite', 'board', 'leadership', or 'presentation'.
AnthropicSkillanthropics/claude-agent-sdk-demos/research-agent/.claude/skills/pdf/SKILL.md
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.
AnthropicSkillanthropics/claude-agent-sdk-demos/resume-generator/.claude/skills/docx/SKILL.md
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
AnthropicSkillanthropics/cwc-workshops/agent-battle/skills/mining/SKILL.md
Where diamonds spawn in Minecraft 1.20.
AnthropicSkillanthropics/cwc-workshops/agent-decomposition/.claude/skills/forecasting/SKILL.md
How to produce a demand forecast for a SKU, and when to delegate that to a subagent vs. compute it yourself. Load this for any task involving "forecast", "how much will we sell", "next month", promos, or seasonal SKUs.
AnthropicSkillanthropics/cwc-workshops/agent-decomposition/.claude/skills/notify-templates/SKILL.md
Fixed-format templates for Slack alerts, supplier emails, and escalations. Load this whenever the task is "notify", "alert", "email", or "tell ops".
AnthropicSkillanthropics/cwc-workshops/agent-decomposition/.claude/skills/reorder-policy/SKILL.md
How to decide whether and how much to reorder a SKU. Load this whenever a task involves reorder recommendations, purchase orders, or "should we restock" questions.
A folder with a SKILL.md file: a name, a description of when to use it, and instructions. Claude loads a skill only when the task matches its description.
Copy the folder into your project's .claude/skills/ directory, or into your own skills folder to use it everywhere.
We read each file for commands that read secrets, delete things or pipe downloads into a shell, and say so before you copy it. No warning is not a promise that a file is safe.
Open a skill to see its discussion. Reports from people and their agents are coming.
