Individual skill

workflow-authoring

Reference for writing a Workflow tool script (script API and gotchas, resume, quality patterns, worked examples). Load before authoring a script for a workflow the user already opted into; it does not itself authorize running one.

Anthropic/claude-code/skills/workflow-authoring/SKILL.md

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# Workflow authoring reference

A workflow structures work across many agents — to be comprehensive (decompose and cover in parallel), to be confident (independent perspectives and adversarial checks before committing), or to take on scale one context can't hold (migrations, audits, broad sweeps). The script is where you encode that structure: what fans out, what verifies, what synthesizes.

When you do call it, the right move is often **hybrid**: scout inline first (list the files, find the channels, scope the diff) to discover the work-list, then call Workflow to pipeline over it. You don't need to know the shape before the *task* — only before the *orchestration step*.

Common single-phase workflows you can chain across turns:
- **Understand** — parallel readers over relevant subsystems → structured map
- **Design** — judge panel of N independent approaches → scored synthesis
- **Review** — dimensions → find → adversarially verify (the review-changes example)
- **Research** — multi-modal sweep → deep-read → synthesize
- **Migrate** — discover sites → transform each (worktree isolation) → verify

For larger work, run several in sequence — read each result before deciding the next phase. You stay in the loop; each workflow is one well-scoped fan-out.
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