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security Cursor ruleA

security from darknecrocities/skillbuilder is a Cursor rule: instructions the Cursor agent follows in that repo.

Install it, pinned

mdr add darknecrocities/skillbuilder/.cursor/rules/security.mdc@git:20261029.1aa6bef

Pins git:20261029.1aa6bef in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 14 of 14 checks passed
Kind: Cursor rule
Repository: darknecrocities/skillbuilder
Path: .cursor/rules/security.mdc
Versions recorded: 1
Latest version: git:20261029.1aa6bef, committed Oct 29, 2026
Size: 7,407 bytes
Repository stars: 13
License: none declared

Security hardening and vulnerability defense skill. Enforces OWASP Top 10 mitigations, zero hardcoded secrets, input sanitization, and SQL parameterization.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Security Hardening & Vulnerability Defense (`/security`)

> **Philosophy**: *Assume breach. Defense in depth. Never trust client input. Never interpolate variables into queries or shell commands. Never swallow errors silently. Refresh tokens must rotate with family reuse detection. All object access must be scoped to the tenant. Block private subnets on outbound requests.*

This skill establishes defensive security standards across web applications, APIs, databases, container environments, and secret management lifecycles.

---

## 1. The Five Core Security Gates

```mermaid
flowchart TD
    A["Untrusted Client Request"] --> B["Gate 1: Boundary Ingress & DDoS Defense"]
    B --> C["Gate 2: Authentication & Cryptographic Token Vault"]
    C --> D["Gate 3: Authorization & BOLA / IDOR Tenant Scoping"]
    D --> E["Gate 4: Injection & Memory Safety (SQL, Shell, ReDoS)"]
    E --> F["Gate 5: Defensive Error Handling & Audited Telemetry"]
```

1. **Gate 1: Boundary Ingress & DDoS Defense**: Cap request payloads (100KB JSON), enforce connection timeouts (3s / 15s), and throttle traffic with sliding-window / token-bucket rate limits.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add darknecrocities/skillbuilder/.cursor/rules/security.mdc@sha256:46882d1077fbe75e

The line at the top of this page pins the label git:20261029.1aa6bef, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_zoj3ay3cfb6oee6e.svg)](https://markdownregistry.com/a/art_zoj3ay3cfb6oee6e)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 1 version of this file, committed on Oct 29, 2026.

version	committed	commit	size	audit
git:20261029.1aa6bef latest	2026-10-29	1aa6bef	7,407 B	A	view

Audit of the latest version

A 14 of 14 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Size between 200 bytes and 200 KB (7407 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

darknecrocities/skillbuilder · 13 stars · license none declared · pushed 2026-10-29 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_zoj3ay3cfb6oee6e
GET https://markdownregistry.com/api/v1/resolve?ref=darknecrocities/skillbuilder/.cursor/rules/security.mdc
GET https://markdownregistry.com/api/v1/blob/46882d1077fbe75e60e6ad72c3c14e9b8a56031eac04d69b93d56546142faf6c

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: Cursor rules vs AGENTS.md · which agent file does what.

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