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fable-5-lite

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fable-mode

HalalifyMusic / fable-mode

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Run Claude Fable 5 on Opus 4.8 in Claude Code. The Mythos-class model pulled by export controls — brought back as a system prompt. One clone + install: leaked Fable 5 prompt, a measured execution playbook, test-after-edit + grounding hooks, and design/MCP/test skills. "Fable 5 Lite," done right.

mcp developer-tools ai-agents claude ultracode coding-assistant llm prompt-engineering anthropic system-prompt ai-coding agent-skills claude-code agentic-coding opus-4-8 claude-fable-5 fable-5 fable-5-lite leaked-prompts
  • Updated Jun 17, 2026
  • Python

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