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/tanstack/cli/cursorrulesgit clone --depth 1 https://github.com/TanStack/cliWhat 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 | $0.00266 | $0.00266 |
| Opus 5 | $0.00133 | $0.00133 |
| Sonnet 5 | $0.00053 | $0.00053 |
| Haiku 4.5 | $0.00027 | $0.00027 |
Grade A, and why
cursorrules 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 yesterday.
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
// Solid.js with Tailwind CSS .cursorrules
// Prefer functional components
const preferFunctionalComponents = true;
// Solid.js and Tailwind CSS best practices
const solidjsTailwindBestPractices = [ "Use createSignal() for reactive state", "Implement Tailwind CSS classes for styling", "Utilize TypeScript's strict mode", "Utilize @apply directive in CSS files for reusable styles", "Implement responsive design using Tailwind's responsive classes", "Use Tailwind's CSS in /src/styles.css for global styles", "Implement dark mode using Tailwind's dark variant", ];
// Additional instructions
const additionalInstructions = `
- Use .tsx extension for files with JSX
- Implement strict TypeScript checks
- Implement proper Tailwind CSS purging for production builds
- Utilize TanStack Router for routing when applicable
- Use type-safe context with createContext
- Implement proper typing for event handlers
- Follow TypeScript best practices and naming conventions
- Use type assertions sparingly and only when necessary
- Use Tailwind's @layer directive for custom styles
- Implement utility-first CSS approach
- Follow both Solid.js and Tailwind naming conventions
- Use JIT (Just-In-Time) mode for faster development `;
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.
- yesterday First seen · 36 lines · 266 tokens per session scan A 9dceabc647ad
cursorrules is a cursor rule published in the GitHub repository TanStack/cli (1,295 stars, last pushed 24d ago), licensed MIT. It adds 266 tokens to every session, about $0.0013 per session on Opus 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 2026-08-30.
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