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HomeDocsClaude Developer Platform 20 Aug 2026
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PDF Processing changedagents-and-tools/agent-skills/overview

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150150The Claude API supports both pre-built Agent Skills and custom Skills. Both work identically: specify the relevant `skill_id` in the `container` parameter along with the [code execution tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/code-execution-tool).
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152**Prerequisites:** Using Skills through the API requires the [code execution tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/code-execution-tool), whose container Skills run in. On the Claude API, neither the Skills API nor the `container.skills` parameter requires a beta header, and requests that still send `skills-2025-10-02` continue to work.
152**Prerequisites:** Using Skills through the API requires the [code execution tool](https://platform.claude.com/docs/en/agents-and-tools/tool-use/code-execution-tool), whose container Skills run in.
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154154Use pre-built Agent Skills by referencing their `skill_id` (`pptx`, `xlsx`, `docx`, or `pdf`), or create and upload your own through the Skills API (`/v1/skills` endpoints). Custom Skills are shared workspace-wide: all workspace members can access them.
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