adobe/spectrum-design-data is a monorepo containing the design tokens, component schemas, specifications, and related datasets that define Adobe's Spectrum design system; a monorepo keeps these related packages in one repository. It is for Adobe Spectrum SDK and tooling developers who need canonical design-system data and validation artifacts. The catalogue add-ons provide workflows and integrations for working with this design data.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
git clone --depth 1 https://github.com/adobe/spectrum-design-dataWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/rules/adobe/spectrum-design-data/javascript)<a href="https://agentmods.dev/rules/adobe/spectrum-design-data/javascript"><img src="https://agentmods.dev/badge/rules/adobe/spectrum-design-data/javascript/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/rules/adobe/spectrum-design-data/javascript"><img src="https://agentmods.dev/badge/rules/adobe/spectrum-design-data/javascript.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00278 | $0.00278 |
| Opus 5.5 | $0.00111 | $0.00111 |
| Sonnet 5.5 | $0.00056 | $0.00056 |
| Haiku 4.5 | $0.00028 | $0.00028 |
Grade A, and why
javascript scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
JavaScript and TypeScript
- ESM throughout (
"type": "module"); Node.js ~20.12. - 2-space indentation and trailing commas in multiline objects and arrays; Prettier enforces formatting on commit.
- Prefer
const; nevervar. - Use
async/awaitover.then()chains. - Use template literals for interpolation.
- Tests use AVA under
test/**/*.test.js; each package has its ownava.config.js. Run one package withpnpm --filter <package-name> test. - New files start with
Copyright YYYY Adobe. All rights reserved.using the current year and//comments. - Use
pnpmfor installs and scripts, andmoon run <task>for defined tasks. Never use npm or yarn. - Commit messages follow conventional commits (
type(scope): description), enforced by commitlint.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 21 lines · 278 tokens per session scan A f93a5ca88601
javascript is a cursor rule published in the GitHub repository adobe/spectrum-design-data (156 stars, last pushed today), licensed Apache-2.0. It adds 278 tokens to every session, about $0.0011 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-14.
Other cursor rules, from other repositories
typescript-conventions
Label console.warn and console.error calls with their origin.
no-bare-casts
No bare as casts in production TypeScript. Use blindCast (value) from @internal/utils/casts as the auditable escape hatch, castAs (value) for declarative-only assertions, or rewrite to eliminate the cast. as const is exempt. Test files are exempt.
use-ast-factories
Use factory functions for creating AST nodes instead of manual object creation.
test-mocking-patterns
Test-only type assertions and mocking patterns (avoid brittle mocks).
jest
Definitive guidelines for writing robust, maintainable, and performant Jest tests in JavaScript and TypeScript projects.
typescript-testing
Use Playwright as the E2E testing framework for critical user flows.