Anthropic Prompt Engineering for Claude

From Anthropic

About this guide

Anthropic's official documentation for writing effective prompts for Claude. Sister document to OpenAI's guide, but with techniques specific to how Claude was trained — using XML tags to structure prompts, explicit reasoning instructions, system prompt patterns, and prompt chaining. If you use Claude regularly (which is increasingly common in business settings), this is required reading. Some of the techniques — particularly XML tagging — produce noticeably better results than plain-text prompts and aren't covered well anywhere else. Best for Claude users, especially those building production workflows or using Claude through the API or Claude Projects.

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