Agent Skills is an open standard introduced by Anthropic for packaging specialized knowledge into folders that agents can discover and load when needed. A skill can combine instructions, scripts, reference files, templates, and other resources so a general-purpose agent can perform a repeatable task more consistently.
What Agent Skills are best for
Skills are useful when an agent repeatedly needs the same process, domain rules, templates, scripts, or organizational context. Typical uses include document production, branded communications, data analysis, software workflows, research procedures, and internal operating playbooks.
How to build a useful skill
- Start with one clearly bounded task and write a precise description of when the agent should load the skill.
- Put the core workflow in SKILL.md, then add scripts, templates, examples, or reference files only when they make the workflow more reliable.
- Test the skill on varied inputs and keep instructions concise enough that the agent can load only the context it needs.
Open standard and API access
Anthropic has published Agent Skills as an open standard. Anthropic's implementation can be used in Claude.ai, Claude Code, and programmatically through the Claude API. The public repository includes the specification, templates, and example skills.
