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.
npx agentmods add rules/mission69b/t2000/design-systemgit clone --depth 1 https://github.com/mission69b/t2000What 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 | $0.00000 | $0.00344 |
| Opus 5 | $0.00000 | $0.00172 |
| Sonnet 5 | $0.00000 | $0.00069 |
| Haiku 4.5 | $0.00000 | $0.00034 |
Grade A, and why
design-system 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
Design System → .claude/skills/t2000-design-system/SKILL.md
The model in one line: share VALUES by copy-in (design-tokens/tokens.css,
pure CSS variables only), own COMPONENTS per-app (shadcn in components/ui/), and
never ship a shared UI/token package again — @t2000/ui was removed 2026-07-01
because it bundled a marketing global stylesheet and packaged primitives a
consumer's Tailwind can't scan.
House look is the seamless near-black dark theme (--bg #08090a); the one per-app
knob is --t2k-accent. Read semantic tokens (--bg/--bg-elevated/--border),
never the raw --ds-gray-* palette, and never hardcode hex outside tokens.css.
Read the full model — adoption table, theme values, and the five rules — before
styling any app: .claude/skills/t2000-design-system/SKILL.md.
(Content moved there 2026-07-24 from geist-ds.mdc — do not re-inline it here;
this file is a pointer so Cursor and Claude Code cannot drift.)
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 · 24 lines · 0 tokens per session scan A 96bb093d03ea
design-system is a cursor rule published in the GitHub repository mission69b/t2000 (23 stars, last pushed 2d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 344 tokens. 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 2026-08-30.
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