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Cursor rules examples

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

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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
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
cisco-ai-defenseCursor rule

skill-scanner / rules

cisco-ai-defense/skill-scanner/.cursor/rules/codeguard-1-digital-certificates.mdc

Certificate Best Practices

2.6k7mo agoDiscuss
cisco-ai-defenseCursor rule

skill-scanner / rules

cisco-ai-defense/skill-scanner/.cursor/rules/codeguard-1-hardcoded-credentials.mdc

No Hardcoded Credentials

2.6k7mo agoDiscuss
cisco-ai-defenseCursor rule

skill-scanner / rules

cisco-ai-defense/skill-scanner/.cursor/rules/no-cursor-co-author.mdc

Never add Cursor as a co-author in git commits

2.6k7mo agoDiscuss
NVIDIACursor rule

cccl / rules

NVIDIA/cccl/.cursor/rules/tuning-analysis.mdc

Analyze CUDA benchmark performance data from sqlite MCP to identify the optimal tuning variant configuration for requested algorithm. Database Context: - Table: cub.bench.{ALGORITHMNAME} contains performance measurements - Key columns: -…

2.5k13d agoDiscuss
VercelCursor rule

workflow / rules

vercel/workflow/.cursor/rules/swc-plugin.mdc

The specification for how to plugin is meant to work can be found in spec.md. To test the plugin, run pnpm test inside swc-plugin-workflow. If changes have been made, use UPDATE=1 pnpm test to have the fixtures be updated to pass the tests.

2.4k11mo agoDiscuss
VercelCursor rule

workflow / rules

vercel/workflow/.cursor/rules/workflow-deployment.mdc

Workflow testing and deployment process guide

2.4k11mo agoDiscuss
K-Dense-AICursor rule

claude-scientific-writer / rules

K-Dense-AI/claude-scientific-writer/.cursor/rules/skills.mdc

Skills are sourced from https://github.com/K-Dense-AI/scientific-agent-skills at the revision pinned in skills.lock.json. Never edit skills/, .claude/skills/, or scientific_writer/.claude/skills/ directly. Make skill-content changes in the upstream repository, then run:

2.3k49d agoDiscuss
codejunkie99Cursor rule

agentic-stack / rules

codejunkie99/agentic-stack/.cursor/rules/caveman.mdc

Caveman full communication mode for all agent replies in this repo.

2.3k25d agoDiscuss
codejunkie99Cursor rule

agentic-stack / rules

codejunkie99/agentic-stack/.cursor/rules/fable-grok-subagents.mdc

Model split requiring Claude Fable 5.1 selected for parent; Grok 4.6 cavecrew subagents handle bounded delegated work.

2.3k25d agoDiscuss
proma-aiCursor rule

Proma / rules

proma-ai/Proma/.cursor/rules/use-bun-instead-of-node-vite-npm-pnpm.mdc

../../CLAUDE.md

2.2k8mo agoDiscuss
ShopifyCursor rule

hydrogen / rules

Shopify/hydrogen/templates/skeleton/.cursor/rules/hydrogen-react-router.mdc

This Hydrogen project is based on React Router, not Remix. When working with documentation or code examples, you should always use imports from the appropriate React Router packages instead of Remix packages. When you see imports from Remix packages, replace them with their equivalent React Router v7 packages. Here are the common replacements: NEVER USE 'react-router-dom' imports! When working in this codebase, always follow the React Router patterns that are already established in the existing code. For more information, consult…

2.1k6mo agoDiscuss
agentset-aiCursor rule

animations

agentset-ai/agentset/.cursor/rules/animations.mdc

Animations Rules and Best Practices

2.1k8mo agoDiscuss
agentset-aiCursor rule

agentset / rules

agentset-ai/agentset/.cursor/rules/clean-code.mdc

Guidelines for writing clean, maintainable, and human-readable code. Apply these rules when writing or reviewing code to ensure consistency and quality.

2.1k8mo agoDiscuss
agentset-aiCursor rule

agentset / rules

agentset-ai/agentset/.cursor/rules/nextjs.mdc

Next.js with TypeScript and Tailwind UI best practices

2.1k8mo agoDiscuss
agentset-aiCursor rule

agentset / rules

agentset-ai/agentset/.cursor/rules/shadcn.mdc

Shadcn UI Components

2.1k8mo agoDiscuss
agentset-aiCursor rule

tailwindcss

agentset-ai/agentset/.cursor/rules/tailwind.mdc

Best practices for using Tailwind CSS

2.1k8mo agoDiscuss
chongdashuCursor rule

unreal-mcp / rules

chongdashu/unreal-mcp/.cursor/rules/tools.mdc

The following guidelines apply to any method or function marked with the @mcp.tool() decorator. When this rule is applied, please remember to explicitly mention it.

2.1k18mo agoDiscuss
chongdashuCursor rule

unreal-mcp / rules

chongdashu/unreal-mcp/.cursor/rules/unreal.mdc

Apply this rule for any MCP Tool call for the Unreal Engine editor

2.1k18mo 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.