anthropics/skills
Public repository for Agent Skills
How skills is put together
This repository is a curated collection of 'Agent Skills' for Claude — self-contained folders of instructions, scripts, and resources that teach Claude specialized tasks. It is primarily a content/documentation repository: each skill lives in its own directory under ./skills with a SKILL.md file containing YAML frontmatter metadata plus markdown instructions, supplemented by reference docs, templates, fonts, and a small amount of executable code (Python modules in slack-gif-creator and skill-creator's eval viewer, a JavaScript generator template in algorithmic-art). The repo also hosts the Agent Skills specification (./spec), a skill template (./template), and a Claude Code plugin marketplace manifest (.claude-plugin/marketplace.json) that lets users install skills as plugins. There is no server, database, or deployment infrastructure; data flow is limited to Claude loading skill instructions at runtime and users installing the marketplace.
Languages
Infrastructure
Major components
skills/ (skill catalog)
Contains ~20 self-contained example skills spanning creative/design (algorithmic-art, canvas-design, theme-factory), development/technical (mcp-builder, webapp-testing, web-artifacts-builder, claude-api), enterprise/comms (brand-guidelines, internal-comms, doc-coauthoring), and document skills (docx, pdf, pptx, xlsx).
Document skills (docx/pdf/pptx/xlsx)
Source-available production skills powering Claude's document creation/editing capabilities, provided as references for complex skill authoring.
spec/
Holds the Agent Skills specification (agent-skills-spec.md) defining the standard that skills follow.
template/
Provides the SKILL.md starter template used to create new basic skills.
.claude-plugin/marketplace.json
Registers this repository as a Claude Code plugin marketplace so skills can be installed as plugins (document-skills, example-skills).
skills/slack-gif-creator/core/
Python implementation modules (easing.py, frame_composer.py, gif_builder.py, validators.py) for programmatically building animated GIFs using Pillow/imageio/numpy.
skills/skill-creator/
Meta-skill for authoring skills, including evaluation agents (analyzer.md, comparator.md, grader.md) and an HTML/Python eval review viewer.
skills/claude-api/
Reference documentation for the Claude API across multiple languages (curl, csharp, go, java, php) including managed agents, streaming, tool use, files API, and error codes.
A busy week that added two new skills and refreshed the claude-api skill with an upgrade guide.
4 weeksWeek of 2026-08-17
Week of 2026-08-17latest
A busy week that added two new skills and refreshed the claude-api skill with an upgrade guide.
Week of 2026-08-10
The claude-api skill gained a new prompt-audit command.
Week of 2026-08-03
The claude-api skill was updated to reflect August's Managed Agents launch.
Week of 2026-07-20
Two updates to the claude-api skill covered a new flagship model and July's Managed Agents changes.
Over the past month, most activity on this repository has centered on keeping the 'claude-api' skill up to date with the latest product changes, including new model releases and a major Python software upgrade. Alongside those updates, two brand-new skills were added in mid-August: one guiding users through Claude Academy content and another called 'discernment-nudge'. The overall arc shows steady maintenance of existing guidance plus a small burst of new educational tooling.
Week by week
2026-08-17A busy week that added two new skills and refreshed the claude-api skill with an upgrade guide.latest4 changes
Docs
Python SDK upgrade guide added to claude-api skill
The claude-api skill now includes instructions for moving from version 0.x to 1.x of the Python developer toolkit.
Refactor
Academy guide skill renamed and simplified
The claude-academy-guide skill was renamed to academy-guide and its description was shortened for clarity.
Feature
New discernment-nudge skill
A new skill was added that nudges users toward more thoughtful judgment when working on tasks.
Feature
New claude-academy-guide skill
A new skill was introduced to help users navigate Claude Academy learning materials (later renamed the same week).
2026-08-10The claude-api skill gained a new prompt-audit command.1 change
Feature
Prompt-audit subcommand added
The claude-api skill now supports a subcommand that reviews prompts, helping users check their prompts for quality or issues.
2026-08-03The claude-api skill was updated to reflect August's Managed Agents launch.1 change
Docs
Managed Agents August launch wave documented
Guidance in the claude-api skill was refreshed to cover the latest round of Managed Agents features released in August.
2026-07-20Two updates to the claude-api skill covered a new flagship model and July's Managed Agents changes.2 changes
Docs
Claude Opus 5 support documented
The claude-api skill was updated so users know how to work with the newly released Claude Opus 5 model.
Docs
July Managed Agents and pricing updates
Documentation now reflects the July Managed Agents launch wave, partner pricing details, and corrections about the tool-runner feature.
Dependencies and code review
Dependency advisories
Security Watch
No known advisories across 0 scanned dependencies.
No known advisories in the scanned dependencies.
Code review
No concrete code-level issues confirmed.
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