Fable Fable
Run fable-mode execution discipline on Claude Fable 5.1, the top of the escalation...
Install
npx skills add mrtooher/fable-mode --skill fable-fable -g -a claude-code -y- Repository
- mrtooher/fable-mode882
- Category
- AI and agents
- Updated
- 11d ago
- License
- See repository
- Context cost
- Lightabout 820 tokens
- Runs scripts
- No, instructions only
What it does
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 the user explicitly asks for thorough/systematic/"deep work" handling on the strongest model ("fable on fable", "stage this on fable", "deep work mode, fable", "run this on 5.1"), or when a fable-opus run reports the task exceeds Opus's ceiling. Benchmarked 2026-09-02: zero correctness delta on Fable 5.1 at ~1.1× tokens, ~2× wall, a provenance runner, not an accuracy runner. Do NOT use for ordinary single-pass tasks, prefer fable-opus, fable-sonnet, or fable-haiku when the task doesn't need peak reasoning. Fable is plan-included; bulk work still routes down-tier.
Fable Mode, Fable 5.1 (v3, agent-routed)
Same structural delegation as fable-opus: the orchestrator is a real agent
definition (agents/fable-orchestrator.md) with no Write/Edit tool, so it
cannot do the work inline. The only difference from fable-opus is the model the
orchestrator runs on. Fable 5.1 is the top of the ladder (Haiku → Sonnet → Opus
→ Fable → user); gaps it cannot close go to the user.
Fable 5.1's characteristic gaps under this discipline: none measured (benchmarked 2026-09-02, 16 paired runs, n=2 per cell: 100/100 in every cell, both arms; skill cost ~1.1× tokens, ~2× wall). This is a provenance runner, worklog, reproducible checks, flagged judgment calls, not an accuracy runner. The orchestrator definition keeps the frontier-tier guards (external-artifact verification, scope rule, replan budget) because those produce the trail.
If a task has one obvious correct approach and fits in a single pass, skip this loop and do it directly. On a Fable-class model the stage map is ceremony for anything short of multi-session or many-file work.
