Mobile Design OS
Run the smallest complete mobile-design chain that satisfies the requested outcome. Route work to the specialized Skills, preserve stable IDs and evidence between stages, and never let polished visuals erase unresolved product, platform, state, or validation gaps.
Establish the run
Determine:
- Requested outcome: analysis, product framing, UX, visual concept, full design package, prototype, review, or implementation handoff.
- Target platform and form factors.
- Available inputs: product idea, screenshots, URLs, brand material, existing contracts, code, or runtime evidence.
- Authorized scope: design only, prototype, or code changes.
- Decisions that genuinely require the user, especially safety model, primary actor, MVP boundary, visual direction, framework override, and public license.
Create design-run.json from assets/design-run-template.json when the work crosses two or more stages or must be resumable. Read references/pipeline-contract.md before creating or updating the manifest.
Route to the required Skills
Read the selected Skill's SKILL.md completely before executing its stage. Do not load every Skill body when the request needs only one or two stages.
| Need | Skill | Completion evidence |
|---|---|---|
| Discover or compare references | mobile-reference-research | Valid reference-research.json |
| Extract mechanics and Design DNA | analyze-mobile-ui | Valid design-dna.json |
| Frame product and MVP | mobile-product-brief | Valid product-brief.json |
| Define flows, objects, screens, and states | mobile-ux-architect | Valid ux-architecture.json |
| Establish low-fidelity hierarchy | mobile-wireframe | Valid wireframe.json |
| Explore and render visual UI | mobile-ui-design | User-selected, locked, valid ui-design.json when structured handoff is requested |
| Extract reusable tokens/components | mobile-design-system | Valid design-system.json |
| Model or render interaction behavior | mobile-prototype | Valid prototype.json and UI alignment report when UI exists |
| Decide and test native behavior | mobile-platform-guidelines | Valid platform-guidelines.json |
| Audit the chain | mobile-design-review | Valid review.json with an honest decision |
| Plan or scaffold implementation | mobile-design-to-code | Valid handoff plus actual build/test evidence when code is generated |
Execute the full chain
For an end-to-end request, use this order while skipping only stages explicitly marked not-required:
- Run
mobile-product-briefto lock problem, audience, activation, core loop, MVP, trust boundaries, and unresolved decisions. - Run
mobile-reference-researchwhen references are missing or need comparison. - Run
analyze-mobile-uiwhen screenshots or reference products must become traceable Design DNA. - Run
mobile-ux-architectfrom the validated brief and reference decisions. - Run
mobile-wireframebefore visual styling when hierarchy or state pressure is nontrivial. - Run
mobile-ui-design. Enforce exactly three comparable previews and stop at its user-choice gate. Do not select a visual direction unless the user explicitly delegates the choice. - After selection, lock the visual direction and complete rendered screens and the structured UI artifact.
- Run
mobile-design-systemwhen downstream reuse or implementation tokens are needed. - Run
mobile-prototype, then validate UI-to-prototype state and interaction alignment. - Run
mobile-platform-guidelinesfor native behavior and device test cases. - Run
mobile-design-reviewagainst the complete available chain. - Run
mobile-design-to-codeonly when implementation or handoff is requested and the review decision permits it.
Update design-run.json after every stage. Preserve upstream Requirement, Flow, Screen, State, Token, Component, and evidence IDs; never silently regenerate identifiers at a downstream stage.
Enforce gates
- Run every stage validator named by the selected Skill and fix structural failures before continuing.
- Require a validated Product Brief before claiming UX completeness.
- Require explicit state ownership and recovery before claiming UI completeness.
- Require
visualLock.status: lockedand a user or user-delegated selection source before Design System or rendered prototype work. - Require UI-to-prototype alignment when both artifacts exist.
- Keep screenshots and browser runners from proving runtime accessibility, lifecycle, permissions, sensors, persistence, delivery, or device behavior.
- Keep a code handoff from proving that generated code builds or tests. Record the exact commands and results when code is generated.
- Require no open P0 or P1 and no missing high-risk evidence before a
pass; otherwise useconditional-pass,revise, orfailas defined by the review Skill.
Run python3 scripts/validate_design_run.py <path-to-design-run.json> --root <run-directory> before delivering a multi-stage run.
Stop only for material decisions
Pause when:
- The user must choose among the three visual directions.
- A decision changes safety, privacy, primary actor, core value loop, destructive behavior, or MVP scope.
- A required input or authorization is unavailable.
- The next step would claim external evaluation, physical-device evidence, production behavior, or a public license that has not actually been provided.
Otherwise proceed with a labeled assumption and record it in the manifest.
Deliver the run
Return:
- Outcome and current stage decision.
- Completed stages and validated artifact paths.
- User decisions and labeled assumptions.
- Open P0/P1 issues and untested high-risk behavior.
- The next executable stage, or the exact external/device/user gate that remains.
Do not describe the chain as complete when a required stage is pending, awaiting user selection, blocked, or structurally valid but untested.