ClaudeMap

Oh My Fable

Anthropic's Fable 5.1 prompting prescriptions packaged as a zero-config hook plugin (KO/EN/ZH).

Skills & Commandspromptingfableskillplugin
Visit projectJunhan2/oh-my-fable

oh-my-fable applies Anthropic's official prompting guides for Fable 5.1 and Opus 5.5 (the current Claude Code default) as one hook plus four skills behind a zero-config plugin: the hook injects each session's rules without writing any files, /fable rewrites vague requests into a four-field template (goal, context, scope, done criteria), /fable-status reports what is in effect, /fable-audit diffs your CLAUDE.md and rules files against the guides' 16 sections, and /fable-setup optionally moves rules into a rules file. It auto-detects terminal versus claude -p / Agent SDK headless modes, injects a short variant into subagents, requires Claude Code 2.1.258+ (2.5.0 verified; Windows needs Git Bash), and ships KO/EN/ZH docs. Still actively maintained (last push 2026-10-20).

What it does

  • One hook plus four skills: /fable (four-field request rewrite), /fable-status (what is in effect), /fable-audit (your CLAUDE.md versus the guides' 16 sections), /fable-setup (rules file, mode pinning)
  • Session-start injection without writing files — CLAUDE.md untouched; removing the plugin leaves no trace
  • Mode auto-detection: terminal/IDE sessions get the interactive rules; claude -p and Agent SDK headless runs additionally get the "user not watching" and "don't stop for interim reports" paragraphs; subagents get a short variant
  • Wording stays nearly word-for-word from the official Fable 5.1 / Opus 5.5 guides; request card UI on Claude Code 2.1.287+, effort-aware blocks for xhigh/max sessions

When to use it

Keeping prompting discipline automatic across models and modes — useful if you switch between Fable 5.1, Opus 5.5, Sonnet 5.5, and headless SDK runs and do not want to re-paste guide rules each session. /fable-audit doubles as a CLAUDE.md hygiene check.

Getting started

claude plugin marketplace add Junhan2/oh-my-fable
claude plugin install oh-my-fable@oh-my-fable

# Open a new session, or run /reload-plugins then /clear to apply now. No config required.

Things to know

Requires Claude Code 2.1.258 or newer — older versions cannot install or read the plugin; Windows hooks run through bash, so Git for Windows is required. Third-party marketplaces default to auto-update off — enable it under /plugin or run claude plugin update oh-my-fable@oh-my-fable. Small project (58 stars).

Repository

Junhan2/oh-my-fable

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