# Fable Judge (agent skill)

> Fable Judge is an agent skill (a SKILL.md file) from Sahir619/fable-method. Adversarial verification of finished work. It works with Claude Code, Codex and Cursor and has 2,296 GitHub stars. Install it by copying the skill folder into your agent's skills directory.

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 / VERIFIED WITH CAVEATS / REFUTED). Use after any agent or model claims work is complete - "/fable-judge", "judge this work", "verify what it did", "did that actually work?".

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/Sahir619/fable-method |
| Skill path | skills/fable-judge/SKILL.md |
| Skill name | fable-judge |
| GitHub stars | 2,296 |
| Installs on skills.sh | not listed |
| License | MIT |
| Skills in repo | 1 |
| Plugin marketplace | fable-method |
| Official | no |
| Works with | Claude Code, Codex, Cursor |
| Category | Testing & QA |
| Last commit | Oct 3, 2026 |

## When it triggers

- "done"
- "/fable-judge"
- "judge this work"
- "verify what it did"
- "did that actually work?"
- "/fable-judge suite TARGET"

## Add this skill

### Claude Code

```sh
/plugin marketplace add Sahir619/fable-method
/plugin install fable@fable-method
```

In the Claude apps, zip the skill folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

### ChatGPT / Codex

```sh
git clone --depth 1 https://github.com/Sahir619/fable-method.git
cp -r fable-method/skills/fable-judge .agents/skills/fable-judge   # repo; ~/.agents/skills for all projects
```

### Cursor

```sh
git clone --depth 1 https://github.com/Sahir619/fable-method.git
cp -r fable-method/skills/fable-judge .cursor/skills/fable-judge   # project; ~/.cursor/skills for all projects
```

Sources (checked 2026-10-07): https://code.claude.com/docs/en/skills, https://support.claude.com/en/articles/12512180-using-skills-in-claude, https://learn.chatgpt.com/docs/build-skills, https://cursor.com/docs/context/skills

---

Canonical page: https://appsgit.com/skills/sahir619-fable-judge
Source: appsgit (https://appsgit.com), the app store for github. Data from the GitHub API, refreshed nightly.
Machine access: JSON API https://appsgit.com/api/v1/apps (OpenAPI: https://appsgit.com/openapi.json), MCP server https://mcp.appsgit.com/mcp, full index https://appsgit.com/llms-full.txt.