Use when asked to build or modify production-quality components, layouts, state, and pages with WCAG 2.1 AA and real content. Not for token-system design: use frontend-design-deslop.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Frontend UI engineering
## Contract
| Field | Bound contract |
|---|---|
| Trigger | Building or modifying user-facing interfaces and pages: creating components, implementing layouts, managing state, meeting WCAG requirements, or when the output must look production-quality and hand-crafted. |
| Authority | Reversible local: writes only named UI component and page files in the local working tree; rollback is undo. No remote mutation. |
| Side effect | UI components and pages created or modified in the local working tree. |
| Done | The UI meets the project design system, passes WCAG 2.1 AA keyboard and focus checks, is responsive at the required breakpoints, uses real content instead of placeholders, and rejects every named AI-aesthetic tell. |
## Not for
- Token-system design with slop-audit gates: use frontend-design-deslop.
- Remote, credential, publish, deploy, or irreversible changes.
## Inputs
Required:
- The component or page to build or modify, and the local file paths that will be created or changed.
…
The line at the top of this page pins the label git:20260904.2014e73, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
GET https://markdownregistry.com/api/v1/artifacts/art_xr4yachpjapi45mw
GET https://markdownregistry.com/api/v1/resolve?ref=outlinedriven/odin-claude-plugin/frontend-ui-engineering
GET https://markdownregistry.com/api/v1/blob/2028816599837d32d2de501c57a14c70ad417dd177f696faf4325f6ca425968a
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