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writing-claude-prompts

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UpdatedJuly 17, 2026 at 14:49

Use when authoring or refining a prompt for Claude (system prompt, user message, tool description, agent instructions) to make it follow Anthropic's official prompt engineering best practices — covers clarity, XML structure, few-shot examples, role, long-context layout, output format control, tool-use phrasing, and effort/adaptive-thinking knobs for the Claude 5 family (Fable 5 / Sonnet 5 / Opus 4.8).

Installation

Install with Codex or Claude Copy this prompt, paste it into Codex, Claude, or another assistant, and let it review the skill page and install it for you.

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