Borrowing it
Nothing to install: this file belongs to kylesnav/delightful-design-system. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/kylesnav/delightful-design-system/main/CLAUDE.mdgit clone --depth 1 https://github.com/kylesnav/delightful-design-systemWrote 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/instructions/kylesnav/delightful-design-system/claude-md)<a href="https://agentmods.dev/instructions/kylesnav/delightful-design-system/claude-md"><img src="https://agentmods.dev/badge/instructions/kylesnav/delightful-design-system/claude-md/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/instructions/kylesnav/delightful-design-system/claude-md"><img src="https://agentmods.dev/badge/instructions/kylesnav/delightful-design-system/claude-md.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 | $0.00396 | $0.00396 |
| Opus 5.5 | $0.00158 | $0.00158 |
| Sonnet 5.5 | $0.00079 | $0.00079 |
| Haiku 4.5 | $0.00040 | $0.00040 |
Grade A, and why
delightful-design-system CLAUDE.md 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 2mo 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
Delightful
Public site and source-of-truth reference for delightful.build.
Source of Truth
delightful-design-system.html is the canonical design-system reference. The other HTML pages are companion references and demos:
index.html— GitHub Pages root redirect to the design-system referencedelightful-color.html— color architecture explorerdelightful-motion.html— CSS motion catalogdelightful-animation.html— JavaScript animation demos
Standalone ports live in sibling repos under ../. Do not recreate local port copies in this repo.
Validate
npm install
npm test
For visual work, open the affected HTML page in Browser and capture desktop/mobile, light/dark, and reduced-motion states where relevant.
Versioning
npm run bump <version>
This bumps only the root package and creates a tag for the delightful.build site repo. Platform ports version themselves in their own repos.
Ecosystem Repos
../delightful-claude-plugin../delightful-vscode../obsidian-delightful../delightful-ghostty../delightful-iterm2../delightful-starship../delightful-shell../claude-setup
Conventions
- All source colors use OKLCH.
- Token architecture: primitives -> semantic -> component. Components never reference primitives directly.
- HTML files are self-contained; no external dependencies except optional web fonts.
- CSS uses cascade layers:
@layer reset, primitives, semantic, component, utilities. - Shadows use hard zero-blur offsets plus ambient depth. Borders are 2px solid by default.
- Preserve
CNAME; the canonical public URL ishttps://delightful.build/.
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.
- 2mo ago First seen · 52 lines · 396 tokens per session scan A 00c7ab0bce85
delightful-design-system CLAUDE.md is an instructions file published in the GitHub repository kylesnav/delightful-design-system (5 stars, last pushed 4mo ago), licensed MIT. It adds 396 tokens to every session, about $0.0016 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 2026-08-31.
delightful-design-system CLAUDE.md compared with instructions from other repositories
| Mod | Type | Stars | Last push | Licence | Scan | Tokens | Works with |
|---|---|---|---|---|---|---|---|
| delightful-design-system CLAUDE.mdkylesnav/delightful-design-system | Instructions file | 5 | 4mo ago | MIT | A | 396 | Claude Code |
| vscode buildNext.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 9,719 | GitHub Copilot |
| next.js AGENTS.mdvercel/next.js | Instructions file | 143k | yesterday | MIT | A | 7,461 | Codex, OpenCode |
| langchain AGENTS.mdlangchain-ai/langchain | Instructions file | 149k | yesterday | MIT | A | 4,680 | Codex, OpenCode |
| vscode oss-third-party-notices.instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 5,516 | GitHub Copilot |
| vscode copilot-instructions.mdmicrosoft/vscode | Instructions file | 195k | yesterday | MIT | A | 3,093 | GitHub Copilot |
| deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness | Instructions file | 274k | 2d ago | MIT | A | 4,313 | Codex, OpenCode |