design-system is agent-read markdown (skill) from fusengine/agents: Use when starting any design task, before choosing or auditing a color/type/spacing token or writing design-system.md — routing step 1..
Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.
What the file says
<objective>
The token-strategy core: OKLCH-only color rules for new tokens, neutral tinting (chroma 0.005-0.015, never pure gray), the accent-commitment levels (restrained/committed/full palette/drenched), the typography scale (ratio, line-height, measure), the 8pt spacing grid, and platform touch-target minimums.
Also defines the canonical output format of `design-system.md` — the file the harness gates on — including its 4 hard requirements (the `## Design Reference` heading, a real inspiration URL, at least one chroma-positive OKLCH token, and the hard-forbidden font exclusions).
This is routing step 1 of `design-method/SKILL.md`: read it before `design-web`, `design-webapp`, `design-ios`, or `design-android`, and before picking or auditing a single color/type/spacing value.
</objective>
<!-- Grounding: grounding-corpus.md §B (thresholds), §H (kept anchors); harness-contract.md invariant #2 (design-system.md format) + #3 (this file's read-path triggers harness phase 1). -->
# Design System — Token Core
Single source for token **strategy** — not values, values live in `references/*.md` and are
read from there, never re-derived here. `design-method/SKILL.md` reads this file
…
Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
A 17 of 17 checks passed. Deterministic, no model, same answer every run.
pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (7990 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
GitHub
fusengine/agents · 28 stars · license MIT · pushed 2026-09-24 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_6qolfjq3g5oh2q4m
GET https://markdownregistry.com/api/v1/resolve?ref=fusengine/agents/design-system
GET https://markdownregistry.com/api/v1/blob/c3d51b350bbe62da5d11967839eaf9c06d116ea30215db6ade306dc73f769baa
Your agent 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.
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