Is the Fable-ish Verification Discipline skill free?

Yes. The skill itself is free from chrisryugj/fable-ish. SkillProof publishes the install command and an independent test verdict at no cost.

What is the Fable-ish Verification Discipline SkillProof Score?

9.2/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 8/10, docs & honesty 5/5.

How do I install Fable-ish Verification Discipline?

Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.

Can I use Fable-ish Verification Discipline with Cursor, Copilot, Gemini CLI, Codex or other AI tools?

The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.

Fable-ish Verification Discipline

Risk-proportional verify-before-you-claim-done workflow for coding tasks, ported from a Codex plugin.

by chrisryugj · chrisryugj/fable-ish

Tested · Works

Install — copy the command Download source ↗

Test report

Verdict: Tested · Works
Score: 9.2/10
Tested: Jul 14, 2026
Environment: Claude Code 2.x (agent harness)
Upstream re-checked: Aug 10, 2026 · c396091

Ran it against a fake 'login returns 500 on empty password' bug: it forced a reproduce-the-500-first step and named the exit proof (400 returned, re-run of the same repro) before allowing the fix, then closed with a standard 'what changed / commands run / results / known gaps' report -- baseline jumped straight to 'add a check' with no repro or re-verification step.

Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works

Installs cleanly 5/5
Triggers reliably 5/5
Output vs. baseline 8/10
Docs & honesty 5/5

What Fable-ish Verification Discipline does

Classifies each coding task as quick/normal/deep/blocked, then enforces a reproduce-first work loop that names an observable exit proof before implementing, runs the narrowest relevant verification, and reports only evidence-backed claims in a standard final-report shape. Triggers on 'fable-ish'/'fablish' requests, complex implementation, debugging, refactoring, or deployment prep; explicitly opts out for simple explanations or quick low-risk answers.

How to install Fable-ish Verification Discipline

git clone https://github.com/chrisryugj/fable-ish
cd fable-ish
mkdir -p ~/.claude/skills
cp -r skills/fable-ish ~/.claude/skills/fable-ish

Skills live in ~/.claude/skills/ (global) or .claude/skills/ (per-project). Restart Claude Code after installing.

Commands — how to trigger Fable-ish Verification Discipline

/fable-ish Risk-proportional verify-before-you-claim-done workflow for coding tasks, ported from a Codex plugin.

It also activates on plain-language prompts like these:

Implement this and prove it works before you call it done
Refactor the auth flow with evidence at each step
Debug this failure and show me the verification you ran

Frequently asked questions

Is the Fable-ish Verification Discipline skill free?: Yes. The skill itself is free from chrisryugj/fable-ish. SkillProof publishes the install command and an independent test verdict at no cost.
Does Fable-ish Verification Discipline work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Jul 14, 2026. Verdict: Tested · Works. Ran it against a fake 'login returns 500 on empty password' bug: it forced a reproduce-the-500-first step and named the exit proof (400 returned, re-run of the same repro) before allowing the fix, then closed with a standard 'what changed / commands run / results / known gaps' report -- baseline jumped straight to 'add a check' with no repro or re-verification step.
What is the Fable-ish Verification Discipline SkillProof Score?: 9.2/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 8/10, docs & honesty 5/5.
How do I install Fable-ish Verification Discipline?: Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
Can I use Fable-ish Verification Discipline with Cursor, Copilot, Gemini CLI, Codex or other AI tools?: The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.