Borrowing it
Nothing to install: this file belongs to MidnightMarathon/securetools. 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/MidnightMarathon/securetools/main/.cursorrulesgit clone --depth 1 https://github.com/MidnightMarathon/securetoolsWrote 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/midnightmarathon/securetools/cursorrules)<a href="https://agentmods.dev/rules/midnightmarathon/securetools/cursorrules"><img src="https://agentmods.dev/badge/rules/midnightmarathon/securetools/cursorrules/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/midnightmarathon/securetools/cursorrules"><img src="https://agentmods.dev/badge/rules/midnightmarathon/securetools/cursorrules.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 | $0.00233 | $0.00233 |
| Opus 5.5 | $0.00093 | $0.00093 |
| Sonnet 5.5 | $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 1mo 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
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.
- 1mo ago 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 4mo ago), licensed MIT. It adds 233 tokens to every session, about $0.0009 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.
Other cursor rules, from other repositories
ponytail
Ponytail, lazy senior dev mode. Always pick the simplest solution that works.
angular-20
This rule provides comprehensive best practices and coding standards for Angular development, focusing on modern TypeScript, standalone components, signals, and performance optimizations.
dev-standard
Apache Superset development standards and guidelines for Cursor IDE.
control-plane-descriptors
Control plane descriptor and instance implementation patterns.
family-instance-domain-actions
Family instance domain action implementation patterns.
no-family-vocabulary-in-framework
The framework domain (packages/1-framework) carries no family- or target-specific vocabulary — types, fields, hooks, or strategy values — and, outside the CLI and the PSL parser's grammar names, no Prisma version name before 8. Enforced by the no-family-vocabulary Biome plugin plus the lint:ratchets ratchet.