Is the Fable Architect skill free?

Yes. The skill itself is free from ahmdd4vd/Fable5res. SkillProof publishes the install command and an independent test verdict at no cost.

What is the Fable Architect SkillProof Score?

7.6/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 6/10, docs & honesty 3/5.

How do I install Fable Architect?

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 Architect 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 Architect

Architecture prose that justifies every call and defines a check per slice

by ahmdd4vd · ahmdd4vd/Fable5res

Tested · Works

Install — copy the command Download source ↗

Test report

Verdict: Tested · Works
Score: 7.6/10
Tested: Aug 10, 2026
Environment: Claude Code 2.x (agent harness)

Ran the same architecture brief twice — once cold, once following the skill body strictly. The skill run carried 8 explicit per-slice acceptance checks against 0 in the baseline, 18 because/since justifications against 0, and caught a real coupling bug the cold run missed: the WebSocket URL declared independently in two modules. The cost is bulk and scannability — 786 words against 231, and the body bans section headers, so you get a wall of prose instead of a design doc you can skim. Its headline claim, Grade A at 100% emulation, comes from the author's own keyword-checkpoint harness tuned across nine rounds, and the advertised 31/31 verification only checks the skill's own statistics against its own shipped data dump, not whether the skill improves anything.

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 6/10
Docs & honesty 3/5

What Fable Architect does

A single-file architecture skill that forces the agent to justify each design decision with an explicit reason, order the build as vertical end-to-end slices instead of layer by layer, and state a verification check for every slice. Triggers when you start a new project, plan a major refactor, or weigh a technology choice. No scripts, no dependencies — one SKILL.md that changes how the design answer is written.

How to install Fable Architect

git clone https://github.com/ahmdd4vd/Fable5res.git
mkdir -p ~/.claude/skills
cd Fable5res && cp -r skills/fable-architect ~/.claude/skills/fable-architect

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

Commands — how to trigger Fable Architect

/fable-architect Architecture prose that justifies every call and defines a check per slice

It also activates on plain-language prompts like these:

Design the architecture for a Markdown live-reload preview CLI
Plan this refactor as vertical slices with a verification check
Break down the build order for this new project's architecture

Frequently asked questions

Is the Fable Architect skill free?: Yes. The skill itself is free from ahmdd4vd/Fable5res. SkillProof publishes the install command and an independent test verdict at no cost.
Does Fable Architect work with Claude Code?: We tested it with Claude Code 2.x (agent harness) on Aug 10, 2026. Verdict: Tested · Works. Ran the same architecture brief twice — once cold, once following the skill body strictly. The skill run carried 8 explicit per-slice acceptance checks against 0 in the baseline, 18 because/since justifications against 0, and caught a real coupling bug the cold run missed: the WebSocket URL declared independently in two modules. The cost is bulk and scannability — 786 words against 231, and the body bans section headers, so you get a wall of prose instead of a design doc you can skim. Its headline claim, Grade A at 100% emulation, comes from the author's own keyword-checkpoint harness tuned across nine rounds, and the advertised 31/31 verification only checks the skill's own statistics against its own shipped data dump, not whether the skill improves anything.
What is the Fable Architect SkillProof Score?: 7.6/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 6/10, docs & honesty 3/5.
How do I install Fable Architect?: 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 Architect 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.