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* Update claude-api skill: Managed Agents self-hosted memory stores and web tool domain settings, cost-optimize subcommand, Admin API reference, ASCII-only text Managed Agents: self-hosted sandboxes can now attach memory stores via the SDK worker (handle_item, ANTHROPIC_WORK_SECRET, sync options, troubleshooting); web_search/web_fetch accept allowed_domains/blocked_domains/user_location/max_content_tokens on the toolset configs entry and are not governed by environment networking; typed per-tool config unions; Console session viewer notes; packages caveat under limited networking; Claude Platform on AWS self-hosted worker auth. New shared/cost-optimization.md backing a cost-optimize subcommand, and new shared/admin-api.md covering client.beta.organization in all SDKs and the CLI. Prompt caching gains TTL selection, automatic vs explicit breakpoint guidance, workspace isolation, and verification guidance. Sonnet 5 pricing is the permanent $2/$10 list price. Advisor pairing no longer excludes Claude Fable 5 for Managed Agents. Reviewer-only HTML comments are stripped from the published files. All files are now plain ASCII in prose (em dashes, arrows, emoji callouts, and box-drawing replaced with ASCII equivalents), matching the source so future syncs diff cleanly. No-Verification-Needed: documentation-only change to skill reference content * Update claude-api skill: Claude Fable 5.1 / Mythos 5.1 catalog rows, Files and Skills APIs out of beta Claude Fable 5.1 (claude-fable-5-1) and Claude Mythos 5.1 (claude-mythos-5-1) become the default Fable-tier models throughout the skill; Claude Fable 5 and Mythos 5 stay selectable by id with their own catalog rows. Feature-support lists that named Fable 5 now read Fable 5/5.1. The Files API and Skills API are out of beta: examples use client.files.* / client.skills.* with no beta header, and the API-drift table points at the beta-to-GA migration docs. No-Verification-Needed: documentation-only change to skill reference content * Update claude-api skill: Claude Fable 5.1 / Mythos 5.1 migration section and API changes Adds a "Migrating to Claude Fable 5.1 from Claude Fable 5" section to shared/model-migration.md: three breaking changes (forced tool_choice any/tool returns 400; thinking blocks are preserved only for the model that produced them or a newer one; and only in the conversation that produced them, so edited history replayed with thinking blocks is rejected), what carries over from Fable 5, the Opus 5 path, Mythos 5.1 notes, capability improvements, prompt-tunable behavioral shifts, and a migration checklist. New API features documented: per-message effort (mid-conversation-output-config beta), turn-scoped mid-conversation system messages with clear_at, progress updates between tool calls via thinking.display "updates", thinking block_binding controls, and the 0.025x cache-read rate on Fable 5.1 with a max_tokens: 0 keep-alive that usually beats the 1-hour TTL. Error catalog, prompt-caching, tool-use, platform-availability, cost-optimization, and prompt-audit are updated to match; SKILL.md routes migration and prompting questions to the new section. No-Verification-Needed: documentation-only change to skill reference content * Update claude-api skill: Claude Fable 5.1 launch-day hedges and migration-path table rows Adds claude-fable-5 -> claude-fable-5-1 and claude-mythos-5 -> claude-mythos-5-1 rows to the migration-path and model-ID mapping tables (including the Bedrock IDs), and updates the refusal-fallback example to the 5.1 model id. Hedges three claims until the launch docs confirm them: Task Budgets support on Claude Fable 5.1, whether Claude Mythos 5.1 shares the 0.025x cache-read rate, and the fallback-credit wording. The block_binding error row now says to send the controls beta header only where that beta is offered and to fall back to strip-and-retry elsewhere. Cross-references within the migration section point at the history-editing check directly. No-Verification-Needed: documentation-only change to skill reference content
Note: This repository contains Anthropic's implementation of skills for Claude. For information about the Agent Skills standard, see agentskills.io.
Skills
Skills are folders of instructions, scripts, and resources that Claude loads dynamically to improve performance on specialized tasks. Skills teach Claude how to complete specific tasks in a repeatable way, whether that's creating documents with your company's brand guidelines, analyzing data using your organization's specific workflows, or automating personal tasks.
For more information, check out:
- What are skills?
- Using skills in Claude
- How to create custom skills
- Equipping agents for the real world with Agent Skills
About This Repository
This repository contains skills that demonstrate what's possible with Claude's skills system. These skills range from creative applications (art, music, design) to technical tasks (testing web apps, MCP server generation) to enterprise workflows (communications, branding, etc.).
Each skill is self-contained in its own folder with a SKILL.md file containing the instructions and metadata that Claude uses. Browse through these skills to get inspiration for your own skills or to understand different patterns and approaches.
Many skills in this repo are open source (Apache 2.0). We've also included the document creation & editing skills that power Claude's document capabilities under the hood in the skills/docx, skills/pdf, skills/pptx, and skills/xlsx subfolders. These are source-available, not open source, but we wanted to share these with developers as a reference for more complex skills that are actively used in a production AI application.
Disclaimer
These skills are provided for demonstration and educational purposes only. While some of these capabilities may be available in Claude, the implementations and behaviors you receive from Claude may differ from what is shown in these skills. These skills are meant to illustrate patterns and possibilities. Always test skills thoroughly in your own environment before relying on them for critical tasks.
Skill Sets
- ./skills: Skill examples for Creative & Design, Development & Technical, Enterprise & Communication, and Document Skills
- ./spec: The Agent Skills specification
- ./template: Skill template
Try in Claude Code, Claude.ai, and the API
Claude Code
You can register this repository as a Claude Code Plugin marketplace by running the following command in Claude Code:
/plugin marketplace add anthropics/skills
Then, to install a specific set of skills:
- Select
Browse and install plugins - Select
anthropic-agent-skills - Select
document-skillsorexample-skills - Select
Install now
Alternatively, directly install either Plugin via:
/plugin install document-skills@anthropic-agent-skills
/plugin install example-skills@anthropic-agent-skills
After installing the plugin, you can use the skill by just mentioning it. For instance, if you install the document-skills plugin from the marketplace, you can ask Claude Code to do something like: "Use the PDF skill to extract the form fields from path/to/some-file.pdf"
Claude.ai
These example skills are all already available to paid plans in Claude.ai.
To use any skill from this repository or upload custom skills, follow the instructions in Using skills in Claude.
Claude API
You can use Anthropic's pre-built skills, and upload custom skills, via the Claude API. See the Skills API Quickstart for more.
Creating a Basic Skill
Skills are simple to create - just a folder with a SKILL.md file containing YAML frontmatter and instructions. You can use the template-skill in this repository as a starting point:
---
name: my-skill-name
description: A clear description of what this skill does and when to use it
---
# My Skill Name
[Add your instructions here that Claude will follow when this skill is active]
## Examples
- Example usage 1
- Example usage 2
## Guidelines
- Guideline 1
- Guideline 2
The frontmatter requires only two fields:
name- A unique identifier for your skill (lowercase, hyphens for spaces)description- A complete description of what the skill does and when to use it
The markdown content below contains the instructions, examples, and guidelines that Claude will follow. For more details, see How to create custom skills.
Partner Skills
Skills are a great way to teach Claude how to get better at using specific pieces of software. As we see awesome example skills from partners, we may highlight some of them here:
- Notion - Notion Skills for Claude