Fable Mode
Enforces staged execution discipline on large tasks: a written stage plan, parallel delegation 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 OR when the task objectively spans multiple files, sources, or sessions. Do NOT trigger on ordinary multi-step requests that a direct attempt handles fine (autonomous triggering only; explicit invocation always runs).
Install
npx skills add mrtooher/fable-mode --skill fable-modegit clone --depth 1 https://github.com/mrtooher/fable-mode.git /tmp/fable-mode
mkdir -p ~/.claude/skills
cp -r /tmp/fable-mode/. ~/.claude/skills/fable-modePersonal skills live in ~/.claude/skills. Use .claude/skills in a project folder to share a skill with your team.
From the SKILL.md
# Fable Mode Family version: v6.1 (2026-10-24): adds the error-first judgment check to step 3. This skill encodes execution discipline for complex work: decompose before acting, delegate where the runtime allows, verify with checks that can fail, self-critique before delivery. A note on what this is. The skill shapes the *procedure* a model follows. It does not change the model's underlying capability. Coherence across long tasks and genuine self-correction live in the weights, not in a prompt. On a model that already does these well, the skill reinforces good habits. On a weaker model, it imposes structure the model would otherwise skip, but it cannot lift the model's reasoning ceiling. Treat this as a checklist, not a capability transplant. ## Invocation gate When the user names this skill — a slash command, or "deep work mode" / "be systematic" in words — RUN IT. Do not weigh whether the task looks big enough. The user's explicit invocation IS the trigger; the cost call is theirs, not yours. The "when NOT to use this" judgment below governs only autonomous triggering — this skill deciding on its own to fire. It never overrides an explicit request. If you think the loop is overkill for what was asked, run it anyway and say so afterward. **Spawn authorization.** Some hosts allow subagents only when the user asks for them, and do not count words like "thorough" as asking (observed: the cloud runtime's Agent tool, 2026-10-10). In this skill family, spawning — stage
Details
- Skill name
fable-mode- Repository
- mrtooher/fable-mode
- Repo updated
- 24 October 2026
- Listed in
- hesreallyhim/awesome-claude-code
FAQ
What does the Fable Mode skill do?
Enforces staged execution discipline on large tasks: a written stage plan, parallel delegation 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 OR when the task objectively spans multiple files, sources, or sessions. Do NOT trigger on ordinary multi-step requests that a direct attempt handles fine (autonomous triggering only; explicit invocation always runs).
How do I install the Fable Mode skill?
skills CLI (Claude Code, Cursor, Codex and more): npx skills add mrtooher/fable-mode --skill fable-mode. Skills go in ~/.claude/skills (personal) or .claude/skills (project), and Claude loads them automatically when a task matches the description.
Is Fable Mode popular?
It lives in mrtooher/fable-mode, which has 881 GitHub stars and 95 forks, and is included in 1 curated skill list.
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