A Claude skill that enforces staged execution discipline on large tasks: a written stage plan, parallel delegation where the runtime allows, a verification check at each stage that can actually fail, and a skeptical self-review before delivery.

The skill shapes the procedure a model follows on complex work. It makes the model decompose before acting, delegate independent sub-work where subagent tooling exists, verify each stage against a failable check rather than a feeling, and critique its own output before delivering it.

It does not change the underlying model's capability. Coherence across long tasks and genuine self-correction live in the model's 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 raise the reasoning ceiling. Treat it as a checklist, not a capability transplant.

Trigger on tasks that span multiple files, multiple sources, or multiple sessions, or when you explicitly ask for systematic execution. Do not use it on tasks with one obvious approach that fit in a single pass. Staging a trivial task wastes effort and buries the answer.

• SKILL.md - the skill itself
• EXAMPLE.md - a worked before/after showing the verification check catching an error that a one-shot attempt ships

Place the fable-mode directory wherever your Claude environment loads skills from (for example, a skills directory read by Claude Code), then invoke it by name or let it trigger on a qualifying task.