Every block of paste text from Anthropic's Claude Fable 5.2 prompting guide, word for word, with what each one fixes and what it costs

The companion to the video "Claude Fable 5.2: Anthropic's 11 Prompting Rules (Copy-Paste)". Anthropic's official prompting guide for Claude Fable 5.2 has 11 sections. This sheet has each one in page order: what you notice, what to do, the text to paste, what Anthropic measured, and what it costs. THE SIX PASTE TEXTS, WORD FOR WORD: the "Finishing work" block (about half as many sessions ended with doable work left; output tokens up about 30 percent), the ownership sentence (the model merged repeated code in about half of the tries, against under a tenth without it; about 1.5 times the output tokens), the harness reminder for long silences, the opening line, updates and recap text, the "Every few tool calls" sentence, and the "Communicating clearly" block for final reports. ALSO INSIDE: the five effort levels and what each one suits, how to word approvals, what to put in a subagent tool description, the four caution cleanups, the seven old instructions to remove or test, the five refusal categories, and Anthropic's four steps for where to start. Page 1 shows where the text goes (system prompt, CLAUDE.md, or project instructions) and why to change it in a new conversation only. Every number is from Anthropic's own testing as published on the page, read November 10, 2026. Independent guide from Hyperautomation Labs — not affiliated with Anthropic.

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