---
name: orch-build-workflow
description: Create or improve workflows and guidance; test them with realistic fixtures and simulated external effects.
disable-model-invocation: true
---

Identify the recurring request and result. Apply [architecture](../../docs/architecture.md) and [library authoring](../../docs/libraries.md) with `orchflows` and `writing` guidance. Author directly or use [orch-work](../orch-work/SKILL.md), honoring settings.

Save inputs, dependencies, process, outputs and stopping conditions. Keep task details in prompts and quality criteria, methods and taste in guidance. Reuse components by supplying scoped inputs; avoid restating their contracts. Leave staffing flexible unless freshness is required. Save model/effort preferences only when requested. Verify [invocation policy](../../docs/hosts.md#invocation-policy).

Before review, run the smallest representative [trial](../../docs/hosts.md#workflow-trials) with synthetic inputs and simulated external effects. Supplied documents are read-only references, not trial targets. Finish selected trials and their required judgments before authoring review; record fixtures, substitutions, interventions and untested branches. If a safe trial is unavailable, report that gap instead of exercising live data or services. Repair observed failures and rerun affected checks. Improvement claims require matched old/new trials.

Apply [orch-review-revise-once](../orch-review-revise-once/SKILL.md) to the candidate and trial evidence. Repeat affected trials when repairs require it. Return the artifact, evidence and gaps; verify native registration before claiming availability by name.