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what is codex-fable-mode fr?

nam-cheol/codex-fable-mode — explained in plain English

Analysis updated 2026-05-18

18Audience · developerComplexity · 1/5Setup · easy

tl;dr

A documentation-only Codex plugin that makes the AI classify each task's output type first, then limits how much planning and tool use it does before responding.

vibe map

mindmap
  root((fable-mode))
    What it does
      Classifies task type first
      Limits planning depth
      Limits tool usage
    Tech stack
      Codex plugin
      Markdown documentation
    Use cases
      Keep small edits small
      Skip planning for simple answers
      Scope implementation work
    Audience
      Korean-speaking Codex users
      Developers

Code map

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filefunction / class

what do people make with this?

VIBE 1

Keep Codex from turning a simple question into an unnecessary implementation.

VIBE 2

Limit how many files and tools Codex reads before making a small fix.

VIBE 3

Get a short plan before Codex starts a larger build instead of jumping straight in.

VIBE 4

Use Korean-language guidance to steer Codex's task classification behavior.

what's the stack?

CodexMarkdown

how it stacks up fr

nam-cheol/codex-fable-mode1tdspg-26/front-aula5-1semacoyfellow/svelte-edge
Stars181818
LanguageHTMLTypeScript
Setup difficultyeasyeasymoderate
Complexity1/51/53/5
Audiencedevelopervibe coderdeveloper

Figures from each repo's GitHub metadata at analysis time.

how do i run it?

Difficulty · easy time til it works · 5min

Documentation-only plugin, installed with two Codex CLI commands, no build step or dependencies.

in plain english

This repository is a plugin for Codex, an AI coding assistant. The plugin is called fable-mode and is described as a documentation-only plugin, meaning it contains no executable code of its own. Its purpose is to change how Codex approaches tasks before it starts working, making it pause and decide what kind of output is actually needed before doing anything. The core idea is called Output Lock. Before Codex writes code, edits files, or gives any response, it first classifies the task into one of several categories: answer, edit, implementation, review, audit, design artifact, research, clarification, or validation. This classification then shapes everything that follows. An answer stays an answer and does not turn into an implementation. An edit stays small and does not become a redesign. A simple question gets a direct response without a planning phase. Two additional constraints called Procedure Budget and Tool Budget limit how much work Codex does. Procedure Budget controls how much planning, questioning, and auditing happens before acting. Simple answers skip planning entirely. Small fixes check only the minimal relevant scope. Larger builds get a short plan before execution. Tool Budget limits which tools Codex reaches for, restricting file reads and searches to only what is needed to verify facts and check the affected areas. The plugin is written mostly in Korean and is aimed at Korean-speaking Codex users, though the underlying concepts apply regardless of language. You activate it by typing $fable-mode at the start of a message in Codex. Installation is done via two terminal commands that register the plugin from this repository. The README includes installation steps for both Codex CLI and Codex Desktop. The plugin is unofficial, not affiliated with Anthropic or OpenAI, and is provider-neutral in its guidance. It does not reproduce any proprietary prompts or internal system instructions.

prompts (copy fr)

prompt 1
Explain how fable-mode's Output Lock decides whether a task is an answer, edit, or implementation.
prompt 2
Walk me through installing fable-mode in Codex CLI using the plugin marketplace commands.
prompt 3
Show me how Procedure Budget and Tool Budget change how much work Codex does before acting.
prompt 4
Help me write a $fable-mode prompt for reviewing a bug from root cause through to a test.

Frequently asked questions

what is codex-fable-mode fr?

A documentation-only Codex plugin that makes the AI classify each task's output type first, then limits how much planning and tool use it does before responding.

How hard is codex-fable-mode to set up?

Setup difficulty is rated easy, with roughly 5min to a first successful run.

Who is codex-fable-mode for?

Mainly developer.

peek the repo → explain another one

This repo across BitVibe Labs

double-check against the repo, no cap.