Fable Harness

Use when installing or updating a project-local Fable Harness for Codex, Claude Code, or compatible agent workflows; when a workspace needs AGENTS.md or CLAUDE.md boot instructions, .codex/.claude/.agents templates, decision traces, semantic notes, native loop governance, loop state, event logs, checklist evidence, subagent briefs, memory closure checks, or protected TDD audit rails.

13 stars 1 forksProductivity & Notes

Install

skills CLI (Claude Code, Cursor, Codex and more)

npx skills add AAO-SH/fable-harness --skill fable-harness

Manual install

git clone --depth 1 https://github.com/AAO-SH/fable-harness.git /tmp/fable-harness
mkdir -p ~/.claude/skills
cp -r /tmp/fable-harness/. ~/.claude/skills/fable-harness

Personal skills live in ~/.claude/skills. Use .claude/skills in a project folder to share a skill with your team.

From the SKILL.md

# Fable Harness

## Overview

Install a lightweight project-local harness that turns the Fable decision-loop playbook into repeatable files, scripts, and agent boot instructions.

The harness is instructional plus mechanical: root instructions load the operating rules, templates standardize audit artifacts, and scripts create traces and check closure.

## Quick Start

When a user asks to install or update Fable Harness, run the installer from this skill. Do not stop at explaining the command.

```powershell
python "<skill-dir>\scripts\install_fable_harness.py" "<project-root>" --agent codex
```

Use the directory containing this `SKILL.md` as `<skill-dir>`. Use the current workspace as `<project-root>` unless the user names another target. If the user does not choose an agent mode, use `auto`.

During an interactive install, the installer checks for Superpowers at `<project-root>/.agents/skills/using-superpowers/SKILL.md`. If Superpowers is missing, it asks whether to install it from the latest official release. If Superpowers is installed but older than the selected source, it asks whether to update. If the user declines, Fable Harness remains standalone. Do not add Superpowers-specific usage instructions to generated `AGENTS.md` or `CLAUDE.md`; Superpowers is discovered as installed skills.

For scripted runs, use explicit flags:

Read the full skill on GitHub

Details

Skill name: fable-harness
Repository: AAO-SH/fable-harness
License: MIT
Repo updated: 28 June 2026

FAQ

What does the Fable Harness skill do?

How do I install the Fable Harness skill?

skills CLI (Claude Code, Cursor, Codex and more): npx skills add AAO-SH/fable-harness --skill fable-harness. Skills go in ~/.claude/skills (personal) or .claude/skills (project), and Claude loads them automatically when a task matches the description.

Is Fable Harness popular?

It lives in AAO-SH/fable-harness, which has 13 GitHub stars and 1 forks.

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