Fable Advisor
Decision protocol for consulting Claude Fable 5 (the top-tier, usage-billed model) as a strategic advisor from an Opus orchestrator session. Use BEFORE committing to any decision that would be costly to revert — system or workflow architecture, database schema and data-model design, API/webhook contracts, n8n workflow topology, technology and vendor selection, production migrations — even when you could decide yourself; deciding solo on a one-way door is exactly the failure mode this skill prevents. Fires on phrasings like "make the call", "decide between X and Y", "we'll live with this choice", "one-way door", "before we freeze it", "has to be right". Also use BEFORE starting any unattended loop, schedule, or routine — /loop, /schedule, /goal with a high turn cap, cron-style agents, proactive workflows — because a loop design flaw repeats every iteration; Fable reviews stop conditions, interval, verification, blast radius, and cost per iteration once, before it runs. Also use when stuck after 2+ genuinely different failed fix attempts, when finalizing an implementation plan (including in plan mode, before ExitPlanMode), before declaring done on hard-to-revert work (production deploys, migrations, client-facing deliverables), and whenever the user mentions Fable, a second opinion, an advisor, or checking with a stronger model. Covers when a consult is worth 2× Opus token prices, the compact briefing packet, per-task budget caps, and how to weigh the advice.
Security AStatic scan found no risk patternsHow grading works ›
From the source SKILL.md
You are an Opus orchestrator. Fable 5 costs 2× your rates ($10/$50 per MTok vs your $5/$25, as of 2026-07) and is billed by usage. Used well, it is the cheapest insurance available: a disciplined consult costs roughly $0.15–0.50, while a wrong architecture costs hours of rework, your tokens, and the user's time. Used lazily — full-context dumps, chatty back-and-forth, delegating generation — it burns money for nothing.
What this skill does
Fable Advisor is a community-contributed Claude Code skill in the architecture sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/fable-advisor/ and loads when your prompt matches the skill's trigger.
When to invoke it: use when stuck after 2+ genuinely different failed fix attempts, when finalizing an implementation plan (including in plan mode, before ExitPlanMode), before declaring done on hard-to-revert work (production deploys, migrations, client-facing deliverables), and whenever the user mentions Fable, a second opinion, an advisor, or checking with a stronger model. Covers when a consult is worth 2× Opus token prices, the compact briefing packet, per-task budget caps, and how to weigh the advice.
Who uses this skill
The Fable Advisor Claude Code skill is built for software engineers, backend developers, full-stack teams, and technical leads building and maintaining production systems. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 158,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
How to install
Free
Manual install (2 steps)
mkdir -p ~/.claude/skills/fable-advisor
curl -L https://claudskills.com/skills/fable-advisor/SKILL.md \
-o ~/.claude/skills/fable-advisor/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/fable-advisor/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/fable-advisor/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\fable-advisor\SKILL.md on Windows. See the full install guide for step-by-step instructions.
Telegram
📱 Install from your phone or desktop Telegram
Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →
Pro
One-click install via the desktop app
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
Pro
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
Frequently asked questions
How do I install the Fable Advisor Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy
SKILL.md from the source repository to
~/.claude/skills/fable-advisor/SKILL.md and restart Claude Code. Both flows are detailed at
claudskills.com/install/.
What does the Fable Advisor skill do?
Decision protocol for consulting Claude Fable 5 (the top-tier, usage-billed model) as a strategic advisor from an Opus orchestrator session. Use BEFORE committing to any decision that would be costly to revert — system or workflow architecture, database schema and data-model design, API/webhook contracts, n8n workflow topology, technology and vendor selection, production migrations — even when you could decide yourself; deciding solo on a one-way door is exactly the failure mode this skill prevents. Fires on phrasings like "make the call", "decide between X and Y", "we'll live with this choice", "one-way door", "before we freeze it", "has to be right". Also use BEFORE starting any unattended loop, schedule, or routine — /loop, /schedule, /goal with a high turn cap, cron-style agents, proactive workflows — because a loop design flaw repeats every iteration; Fable reviews stop conditions, interval, verification, blast radius, and cost per iteration once, before it runs. Also use when stuck after 2+ genuinely different failed fix attempts, when finalizing an implementation plan (including in plan mode, before ExitPlanMode), before declaring done on hard-to-revert work (production deploys, migrations, client-facing deliverables), and whenever the user mentions Fable, a second opinion, an advisor, or checking with a stronger model. Covers when a consult is worth 2× Opus token prices, the compact briefing packet, per-task budget caps, and how to weigh the advice.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Fable Advisor skill?
Use Fable Advisor when your Claude Code task falls under the Engineering category — specifically in the architecture area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Fable Advisor" or describe the task and let Claude pick). Browse related skills at
/category/engineering/.
What is a Claude Code skill and how does the Fable Advisor skill fit in?
A Claude Code skill is a
SKILL.md file that lives under
~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Fable Advisor is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Engineering category. Learn more at
/learn/what-is-a-claude-skill/.
Attribution & license
Cite this skill
If you reference this skill in a blog post, paper, or documentation, you can cite it as:
APA
czlonkowski. (2026). Fable Advisor [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/fable-advisor/
BibTeX
@misc{fable-advisor-2026,
author = {czlonkowski},
title = {Fable Advisor [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/fable-advisor/}
}
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Security scan
Grade A · scanned 2026-07-23 — free static scan against the OWASP Agentic Skills Top 10.
No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›
- ✓ Prompt injection
- ✓ Data exfiltration
- ✓ Supply chain
- ✓ Reverse shell
- ✓ Credentials
- ✓ Execution
- ✓ Filesystem
- ✓ Persistence
- ✓ Obfuscation
- ✓ Network
Show this grade on your repo (click to copy):
[](https://claudskills.com/skills/fable-advisor/#security)
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