Fable Method skill for Codex
The Fable Workflow: how Claude Fable 5 worked, distilled into skills any model can run, with the eval that keeps it honest. Think / act / prove.
How to install Fable Method in Codex
In Codex, ask the built-in skill installer for it:
$skill-installer install the <skill> skill from https://github.com/Sahir619/fable-methodType this in Codex and replace <skill> with a folder name from 'What it contains'. $skill-installer is the skill installer built into Codex, and it downloads the skill from GitHub. Restart Codex if the skill doesn't show up. Check the repo README for any setup it needs. Source: Codex skills docs.
Or copy the skill folder (the one with SKILL.md) into ~/.agents/skills to use it in every project, or into .agents/skills in a repo to share it with that repo. Codex picks up new skills automatically. (where Codex loads skills)
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What it contains
Skills (5)
fable-domain— Discuss a domain with the user, research it from real sources, then generate a trusted skill bundle for it - a step-by-step workflow with a flowchart, a domain adapter, a trap fixture, and a smoke eval. Use when the user says "/fable-domain SECTOR", "make a…fable-judge— Adversarial verification of finished work. Treats any "done" as a set of claims, then re-runs the claimed verifications, diffs what actually changed, detects weakened tests and false completion claims, and delivers an evidence-based verdict (VERIFIED /…fable-loop— End-to-end orchestrated workflow that runs a task the way Fable ran sessions - parallel evidence subagents, one committed plan, surgical execution with an intent gate, adversarial verification agents, honest outcome-first report. Use for non-trivial…fable-method— A step-by-step problem-solving loop (classify the ask, define done, gather evidence, decide, act surgically, verify by observation, report outcome-first). Use when the user says "/fable-method", "use the fable method", or "approach this like Fable", or…release-helper— Ensures configuration and code changes are released correctly. Use PROACTIVELY whenever you edit config.json, change any setting, or fix a configuration bug in this project, so the change reaches production.
About this listing
Fable Method is a community collection of agent skills on GitHub by Sahir619: folders with a SKILL.md file, the format Codex loads skills from. Its README mentions Codex. It passed the CodexStacks quality filter for skills (at least 100 stars, pushed in the last 90 days, not a fork or a list, and at least one SKILL.md with a name and description). OpenAI hasn't reviewed it, but it passed our Codex install check on Oct 25, 2026 (an install and load check, not a code review). From its files we found 5 skills. It's one of 441 listings in the Developer Tools category (category assigned by CodexStacks from the repo's topics and description).
Fable Method FAQ
How do I install Fable Method in Codex?
In Codex, type $skill-installer install the <skill> skill from https://github.com/Sahir619/fable-method. $skill-installer is the skill installer built into Codex (Codex skills docs). Or copy the skill folder (the one with SKILL.md) into ~/.agents/skills to use it in every project, or into .agents/skills in a repo to share it with that repo. Codex picks up new skills automatically.
Is Fable Method an official Codex skill?
No. Fable Method is a community repo on GitHub by Sahir619. It passed the CodexStacks quality filter, but OpenAI hasn't reviewed it, but it passed our Codex install check on Oct 25, 2026 (an install and load check, not a code review), so read the code before you install it.
What does Fable Method include?
From its manifest and repo files, Fable Method includes 5 skills: fable-domain, fable-judge, fable-loop, fable-method, release-helper.
Details
- Type
- Skill
- Category
- Developer Tools (assigned by us)
- Source
- Community
- Author
- Sahir619
- License
- MIT
- GitHub stars
- 2,308 (at last sync)
- Last push
- 2026-10-03
- GitHub topics
- ai-agents, claude, claude-code, claude-md, coding-agent, evaluation, fable, llm
- Source
- https://github.com/Sahir619/fable-method
- Listed via
- GitHub search: Codex skills (SKILL.md)
- Install check by CodexStacks
- Passed on Oct 25, 2026 with Codex CLI 0.163.0: Codex loaded its skills. proof · how we check
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For maintainers: badge and embeds
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Markdown
[](https://codexstacks.com/p/fable-method/)HTML
<a href="https://codexstacks.com/p/fable-method/"><img src="https://codexstacks.com/badge.svg" alt="Listed on CodexStacks" width="172" height="28"></a>Embed card (static HTML and inline CSS, no JavaScript). Preview:
<a href="https://codexstacks.com/p/fable-method/" style="display:block;max-width:380px;box-sizing:border-box;padding:14px 16px;border:1px solid #3a2c26;border-radius:12px;background:#0d0b0a;color:#f3ece6;font:14px/1.45 -apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;text-decoration:none"><span style="display:block;font-size:16px;font-weight:700;color:#f3ece6">Fable Method</span><span style="display:block;margin:2px 0 8px;font-size:12px;color:#b5a9a1">Community Codex skill · 5 skills</span><span style="display:block;margin:0 0 10px;color:#ddd3cc">The Fable Workflow: how Claude Fable 5 worked, distilled into skills any model can run, with the eval that keeps it…</span><span style="font-size:12px;font-weight:600;color:#ffb347">View on CodexStacks →</span></a>Markdown summary
**[Fable Method on CodexStacks](https://codexstacks.com/p/fable-method/)**: Community Codex skill with 5 skills.More on badges, embeds and keeping your listing up to date: CodexStacks for plugin authors.
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