onsystem SKILL.md skillA
onsystem from dgesteves/onsystem is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add dgesteves/onsystem/onsystem@git:20261014.c598caePins git:20261014.c598cae in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- dgesteves/onsystem
- Path
plugins/onsystem-cursor/skills/onsystem/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261014.c598cae, committed Oct 14, 2026
- First version recorded
- Oct 10, 2026
- Size
- 3,098 bytes
- Repository stars
- 21
- License
- MIT
Build or change React UI with this project's own design system. Use when writing or editing components, pages or styles in .tsx/.jsx files, choosing colors, spacing or radius, or reviewing UI code. Look components, props, variants and tokens up with the onsystem MCP tools instead of guessing, and fix every check_ui finding.
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
# Building UI with the project's design system
The `onsystem` MCP server reads this project's components (props, `cva` variants, parts), design tokens and component docs. Use it as ground truth: training data does not know this project's `Button` variants or color tokens. If its tools are not available, use the command line instead, as the last section says.
## Before writing UI
1. Find what exists: `search_components` with the intent ("confirm a destructive action", "status label"), or `list_components`.
2. Read `get_component` for every component you use. Use only the props and variant values it lists, the import it shows, and its parts (`CardHeader`, not `Card.Header`, unless it lists the member).
3. Style with tokens from `get_tokens`: semantic classes such as `bg-destructive` or `text-muted-foreground`, never hex or rgb values, arbitrary pixel values (`p-[13px]`) or Tailwind's default palette (`bg-red-500`).
4. Prefer a variant over overriding a component's classes, and a design-system component over a native element (`<Button>`, not `<button>`).
5. Give icon-only buttons an accessible name (`aria-label`).
…Read the whole file at its exact version.
How to install
mdr add dgesteves/onsystem/onsystem@sha256:dc7d0da091d35f36The line at the top of this page pins the label git:20261014.c598cae, 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.
[](https://markdownregistry.com/a/art_5s2lf6mh2yoe2f7l)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Oct 10, 2026 and Oct 14, 2026, about one every 4 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261014.c598cae latest | 2026-10-14 | c598cae | 3,098 B | A | view · diff |
| git:20261010.cd4cbce | 2026-10-10 | cd4cbce | 2,266 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (3098 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
dgesteves/onsystem · 21 stars · license MIT · pushed 2026-11-03 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_5s2lf6mh2yoe2f7l GET https://markdownregistry.com/api/v1/resolve?ref=dgesteves/onsystem/onsystem GET https://markdownregistry.com/api/v1/blob/dc7d0da091d35f36d90b0a3c5e635b734be131ce3a41a27902978863c296b3b1
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
More from dgesteves/onsystem
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