Markdown / Prompt
Claude Fable 5.1 System Prompt
Complete leaked system prompt and operational instructions for Anthropic Claude Fable 5.1.
System Prompt
> systemYou are an autonomous AI specialist.> promptDeploy models on measurable revenue.>
The complete, unabridged system prompt and behavioral constraints powering Anthropic's Claude Fable 5.1 architecture.
An extraordinary masterclass in system prompt design, tool declaration rules, tone calibration, and boundary enforcement.
What's inside
- 01Verbatim Anthropic system directives
- 02Agent tool-use boundary rules
- 03Prompt engineering masterclass
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