Updated 4d ago
by mrtooher
fable-mode
A Claude skill that activates Fable-style agentic behavior: explicit multi-stage planning, sub-agent delegation, and self-verification.
876 GitHub stars (876)
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- 7 skills (7 skills found in its SKILL.md files)
- 95 forks (95 forks)
- 4d ago last update (Last updated 4d ago)
Install
Skills CLI
npx skills add mrtooher/fable-mode
Asks which skills and agents to install. Just one: npx skills add mrtooher/fable-mode --skill fable-mode — add -g for every project.
Claude Code
git clone https://github.com/mrtooher/fable-modecp -r "fable-mode" ~/.claude/skills/fable-mode
Copies the fable-mode skill into ~/.claude/skills/ for every project (use .claude/skills/ for one project). Repeat for the other skills listed below.
Plugin
/plugin marketplace add mrtooher/fable-mode
Run inside Claude Code if the repository ships a plugin marketplace, then pick plugins from /plugin.
Skills can run code on your machine — read the SKILL.md first.
What it does
In the author's own words, from each skill's SKILL.md.
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fable-mode
Enforces staged execution discipline on large tasks: a written stage plan, delegation to named fable agents where the runtime supports it, a failable verification check at each stage, and a skeptical self-review before delivery. Trigger when the user explicitly asks ("do this thoroughly", "be systematic", "deep work mode") OR when the task objectively spans multiple files, multiple sources, or mu…
SKILL.md on GitHub (opens in a new tab) -
double-check
Automatic final verification pass on completed deliverables. Runs automatically at the end of every fable-mode run (fable-mode, fable-fable, fable-opus, fable-sonnet, fable-haiku) — those skills invoke it before delivery. Also triggers when the user says "double check this", "double-check", or wants the finished work re-checked without doing it themselves. Uses a panel of model-tier checker agent…
double-check/SKILL.md on GitHub (opens in a new tab) -
execution-guardrails
Always-on operational guardrails, model-independent. Apply on EVERY task and EVERY model (Fable, Opus, Sonnet, Haiku, and any future tier) whether or not fable-mode's staged loop is running. Three rules: (1) verify-before-flag — never raise a warning about a problem that hasn't been confirmed present by a direct check; (2) warning batching — accumulate minor concerns and surface them together at…
execution-guardrails/SKILL.md on GitHub (opens in a new tab) -
fable-fable
Run fable-mode execution discipline on Claude Fable 5.1 — the top of the escalation ladder and the strongest staged run available. Routes the task to the @fable-orchestrator agent with its model overridden to Fable (`model: "fable"`), which stages the work, delegates artifact production to @fable-worker-sonnet / @fable-worker-haiku, and cold-checks deliverables with @fable-verifier. Trigger when…
fable-fable/SKILL.md on GitHub (opens in a new tab) -
fable-haiku
Run fable-mode execution discipline on Claude Haiku. Routes the task to the @fable-worker-haiku agent, whose definition carries the staged loop with tightened verification (no bare "unverified" allowed) and an escalate-don't-improvise rule. Trigger when the user explicitly asks for thorough/systematic handling run cheaply or fast ("fable on haiku", "deep work mode but cheap", "stage this on haiku…
fable-haiku/SKILL.md on GitHub (opens in a new tab) -
fable-opus
Run fable-mode execution discipline on Claude Opus — one rung below Fable 5.1 on the escalation ladder. Routes the task to the @fable-orchestrator agent (Opus, Write-less), which stages the work, delegates artifact production to @fable-worker-sonnet / @fable-worker-haiku, and cold-checks deliverables with @fable-verifier. Trigger when the user explicitly asks for thorough/systematic/"deep work" h…
fable-opus/SKILL.md on GitHub (opens in a new tab) -
fable-sonnet
Run fable-mode execution discipline on Claude Sonnet. Routes the task to the @fable-worker-sonnet agent, whose definition carries the staged loop with step-3 verification enforced hardest (Sonnet's known gap), optionally followed by a cold @fable-verifier pass. Trigger when the user explicitly asks for thorough/systematic/"deep work" handling on Sonnet ("fable on sonnet", "stage this on sonnet",…
fable-sonnet/SKILL.md on GitHub (opens in a new tab)
No skill matches that filter.
Review before you install
A skill is a set of instructions and scripts your agent will follow, and it can run code on your machine. Read the SKILL.md and any scripts first — this listing is not a security review.
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