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/midnightmarathon/securetools/cursorrulesgit clone --depth 1 https://github.com/MidnightMarathon/securetoolsWhat 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 | $0.00233 | $0.00233 |
| Opus 5 | $0.00117 | $0.00117 |
| Sonnet 5 | $0.00047 | $0.00047 |
| Haiku 4.5 | $0.00023 | $0.00023 |
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
SecureTools Autopilot Rules
You are an AI assistant working on SecureTools. Follow these rules or the CI will fail.
- NO FRAMEWORKS: No React, Vue, Tailwind, etc.
- NO BUILD TOOLS: No Webpack, Vite, npm, package.json.
- VANILLA ONLY: Only plain HTML, CSS (in /assets/styles.css), and JS (in separate files, loaded with
defer). - NO INLINE JS: No
<script>blocks in HTML, noonclick, nooninput. UseaddEventListenerin.js. - RANDOMNESS: Use
crypto.getRandomValues(). NeverMath.random(). - CDN: Check srihash.org and include
integrityandcrossorigin="anonymous"on all CDN scripts. - SHARED CSS: Do NOT duplicate body, nav, button, or main styles. They inherit from
/assets/styles.css.
Read AGENTS.md for the full file map, checklists, and CSS definitions before modifying HTML.
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 · 13 lines · 233 tokens per session scan A 8d6a79751520
cursorrules is a cursor rule published in the GitHub repository MidnightMarathon/securetools (2 stars, last pushed 3mo ago), licensed MIT. It adds 233 tokens to every session, about $0.0012 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 2026-08-31.
Other cursor rules, from other repositories
webkit-browser
Cursor rule "webkit-browser" from duckduckgo/apple-browsers, covering webkit & browser development guidelines, webview configuration, basic webview setup, user scripts management and tab management.
cypress-e2e-testing-cursorrules-prompt-file
Cursor rules for Cypress development with E2E testing.
vasu-playwright-utils
../../templates/cursor-rules/vasu-playwright-utils.mdc.
dev-browser
Fallback browser automation with persistent Chrome state. Use only when Browser Use is unavailable or blocked.
node-dependencies
Enforce Node.js versioning and package management best practices.
security-standards
Cursor rule "security-standards" from wjgogogo/cursor-rules, covering 安全规范, 核心原则 [p0], 输入验证, xss 防护 and csrf 防护.