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Cursor rules examples

The rules real projects give Cursor's agent, from .cursor/rules.

Best matchesWorked for most · soon
cisco-ai-defenseCursor rule

skill-scanner / rules

cisco-ai-defense/skill-scanner/.cursor/rules/codeguard-0-iac-security.mdc

Infrastructure as Code Security

2.6k7mo agoDiscuss
cisco-ai-defenseCursor rule

skill-scanner / rules

cisco-ai-defense/skill-scanner/.cursor/rules/codeguard-1-crypto-algorithms.mdc

Cryptographic Security Guidelines

2.6k7mo agoDiscuss
affaan-mCursor rule

ECC / rules

affaan-m/ECC/.cursor/rules/php-security.md

PHP security extending common rules

246k30d agoDiscuss
affaan-mCursor rule

ECC / rules

affaan-m/ECC/.cursor/rules/common-security.md

Security: mandatory checks, secret management, response protocol

246k30d agoDiscuss
cisco-ai-defenseCursor rule

skill-scanner / rules

cisco-ai-defense/skill-scanner/.cursor/rules/codeguard-0-mobile-apps.mdc

Mobile app security (iOS/Android): storage, transport, code integrity, biometrics, permissions

2.6k7mo agoDiscuss
cisco-ai-defenseCursor rule

skill-scanner / rules

cisco-ai-defense/skill-scanner/.cursor/rules/codeguard-0-supply-chain-security.mdc

Dependency & supply chain security (pinning, SBOM, provenance, integrity, private registries)

2.6k7mo agoDiscuss
NVIDIACursor rule

Personal-AI-Router / rules

NVIDIA/Personal-AI-Router/.cursor/rules/security.mdc

Security ownership boundary — the backend owns all cluster trust; PAIR implements none

1.5k9d agoDiscuss
NVIDIACursor rule

Personal-AI-Router / rules

NVIDIA/Personal-AI-Router/.cursor/rules/system-architecture.mdc

Current PAIR runtime architecture, communication paths, modular services, and security boundaries

1.5k9d agoDiscuss
cisco-ai-defenseCursor rule

skill-scanner / rules

cisco-ai-defense/skill-scanner/.cursor/rules/codeguard-0-framework-and-languages.mdc

Framework & language security guides (Django/DRF, Laravel/Symfony/Rails, .NET, Java/JAAS, Node.js, PHP config)

2.6k7mo agoDiscuss
affaan-mCursor rule

ECC / rules

affaan-m/ECC/.cursor/rules/common-agents.md

Agent orchestration: available agents, parallel execution, multi-perspective analysis

246k30d agoDiscuss
affaan-mCursor rule

ECC / rules

affaan-m/ECC/.cursor/rules/common-patterns.md

Common patterns: repository, API response, skeleton projects

246k30d agoDiscuss
DietrichGebertCursor rule

ponytail / rules

DietrichGebert/ponytail/.cursor/rules/ponytail.mdc

Ponytail, lazy senior dev mode. Always pick the simplest solution that works.

143k4mo agoDiscuss
PostHogCursor rule

posthog / rules

PostHog/posthog/.cursor/rules/django-python.mdc

Rules for writing Python services at PostHog (Python servers powered by the Django framework)

40k5d agoDiscuss
MicrosoftCursor rule

data-formulator / rules

microsoft/data-formulator/.cursor/rules/error-response-safety.mdc

Prevent information exposure through exception messages in HTTP responses

17k5mo agoDiscuss
MicrosoftCursor rule

data-formulator / rules

microsoft/data-formulator/.cursor/rules/path-safety.mdc

路径安全编码规范 — 编辑路由/Agent/Loader/Workspace/知识库代码时自动提醒

17k5mo agoDiscuss
airweave-aiCursor rule

airweave / rules

airweave-ai/airweave/.cursor/rules/api-layer.mdc

mappings (10min TTL). API keys are encrypted before use as cache keys for security. All cache operations fail gracefully—errors are logged but never block requests. Integrated into `deps.py

6.6k6mo agoDiscuss
airweave-aiCursor rule

airweave / rules

airweave-ai/airweave/.cursor/rules/crud-layer.mdc

Comprehensive guide for understanding and working with the CRUD layer in Airweave backend

6.6k6mo agoDiscuss
airweave-aiCursor rule

airweave / rules

airweave-ai/airweave/.cursor/rules/frontend-rules.mdc

Memoization for expensive computations - Callback refs for stable references - Lazy loading for route components ## Security Considerations ### 1. **Token Management** - Tokens never exposed in URLs - Automatic cleanup on logout - Secure storage

6.6k6mo agoDiscuss
VercelCursor rule

streamdown / rules

vercel/streamdown/apps/website/.cursor/.cursor/rules/ultracite.mdc

Ultracite Rules - AI-Ready Formatter and Linter

5.7k14mo agoDiscuss
SynkraAICursor rule

aiox-core / agents

SynkraAI/aiox-core/.cursor/rules/agents/architect.mdc

AIOX agent @architect - Architect

3.1k4mo agoDiscuss
CLAUDE.md vs AGENTS.md

About cursor rules

What are cursor rules?

Instruction files for Cursor's agent, kept in .cursor/rules/ as .mdc files.

How are they different from AGENTS.md?

A rule can apply only to files matching a pattern, or only when the agent asks for it. AGENTS.md always applies.

How do I use one?

Copy the .mdc file into your project's .cursor/rules/ directory and adjust its globs.

Which ones worked?

Open a rule to see its discussion. Reports from people and their agents are coming.