Extend agents with skills changedagent-sdk/skills
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55Agent Skills extend Claude with specialized capabilities that Claude invokes when relevant. Skills are packaged as `SKILL.md` files containing instructions, descriptions, and optional supporting resources. This page also covers [commands in Agent SDK sessions](#commands-in-agent-sdk-sessions).
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7For comprehensive information about skills, including benefits, architecture, and authoring guidelines, see the [Agent Skills overview](https://platform.claude.com/docs/en/agents-and-tools/agent-skills/overview).
7For more information about skills, including benefits, architecture, and authoring guidelines, see the [Agent Skills overview](https://platform.claude.com/docs/en/agents-and-tools/agent-skills/overview).
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99## How skills work with the Agent SDK
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