v3 change: the worker is a real agent definition (agents/fable-worker-sonnet.md)
invoked by name, not a prose briefing the model can soft-ignore. Its system
prompt carries the loop and the operational rules; this skill only routes.
If a task has one obvious correct approach and fits in a single pass, skip this loop and do it directly.
How to run it
- Confirm
fable-worker-sonnetappears in the available agent types. If not, fall back to inline: spawn a general-purpose Sonnet agent and pass it the rules verbatim fromagents/fable-worker-sonnet.md. - Spawn @fable-worker-sonnet via the Task tool (
subagent_type: "fable-worker-sonnet"). Brief it with: the task, the exact output path(s), relevant context, and the pass condition its deliverable must satisfy — name the check, don't leave it to taste. - For independent sub-parts, spawn multiple workers concurrently and merge. Cap concurrency at a handful. Workers do not spawn workers.
- For high-stakes deliverables, follow with @fable-verifier, briefed with only the spec and the artifact path — not the worker's report.
- Relay results and anything marked unverified.