The rules real projects give Cursor's agent, from .cursor/rules.
Files you open will collect here, so you can find them again.
Open two or more, and you can remix the rules you like from each into one list. Kept in this browser only.
airweave-aiCursor ruleairweave-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
airweave-aiReads credentialsCursor ruleairweave-ai/airweave/.cursor/rules/backend-rules.mdc
search functionality - **Automatic Tracking**: All search operations (regular, streaming, legacy) tracked uniformly via `SearchService` ### Security - Never use `random.*` for security-sensitive values — ruff rule `S311` bans it - Use `secrets.choice()`, `secrets.randbelow
airweave-aiReads credentialsCursor ruleairweave-ai/airweave/.cursor/rules/connect-widget.mdc
useParentMessaging`) The widget runs in an iframe and communicates with the parent via `postMessage`. **SECURITY: Origin validation is enforced for postMessage:** The Connect widget captures the parent origin from
airweave-aiCursor ruleairweave-ai/airweave/.cursor/rules/crud-layer.mdc
Comprehensive guide for understanding and working with the CRUD layer in Airweave backend
airweave-aiCursor ruleairweave-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
airweave-aiReads credentialsCursor ruleairweave-ai/airweave/.cursor/rules/mcp-server.mdc
MCP (Model Context Protocol) server architecture and implementation
HeliconeCursor ruleHelicone/helicone/.cursor/rules/jawn.mdc
follow snake_case naming - Use proper indexes for performance - Implement proper RLS policies for security - Create functions for specialized operations (e.g., incrementing versions) ## Enhanced Filters Specifics - Filters support both simple
No other project uses it yet
HeliconeCursor ruleHelicone/helicone/.cursor/rules/supabase.mdc
Supabase
No other project uses it yet
lightdashCursor rulelightdash/lightdash/.cursor/rules/backend.mdc
Implement proper error categorization - Track error rates and patterns - Monitor error impact on performance ## Security Considerations 1. **Authorization** - Use CASL for permission management - Implement proper role-based access control - Validate
Steady47 mentions in 2 weeks
No other project uses it yet
VercelCursor rulevercel/streamdown/apps/website/.cursor/.cursor/rules/ultracite.mdc
Ultracite Rules - AI-Ready Formatter and Linter
Steady14 mentions in 2 weeks
9 projects use a version of this
reown-comCursor rulereown-com/appkit/.cursor/rules/appkit-monorepo.mdc
Monorepo-wide rules for Reown AppKit: structure, layering, packaging, and TS/SDK best practices
Steady5 mentions in 2 weeks
No other project uses it yet
reown-comCursor rulereown-com/appkit/.cursor/rules/appkit-packages.mdc
Focused rules for working in packages (controllers, scaffold-ui views, new packages)
Steady5 mentions in 2 weeks
No other project uses it yet
Adam-CADReads credentialsCursor ruleAdam-CAD/CADAM/.cursor/rules/project-overview.mdc
Three.js resources - Use React Three Fiber for React integration - Handle WebGL context loss gracefully ### Security - All sensitive operations go through authenticated Edge Functions - Implement proper CORS policies - Validate all user
MCSManagerCursor ruleMCSManager/MCSManager/.cursor/rules/backend-daemon-panel-standards.mdc
Backend development conventions
No other project uses it yet
dmno-devReads credentialsCursor ruledmno-dev/varlock/.cursor/rules/style-guide.mdc
explains why loadEnv(); // loads the env vars for the app, which is important for security ``` output: | ```js loadEnv(); ``` This code loads environment variables for the app. metadata: priority: high version
Steady19 mentions in 2 weeks
No other project uses it yet
prestCursor ruleprest/prest/.cursor/rules/agentic-loop.mdc
pREST agentic develop→validate loop — follow on every coding task
Steady2 mentions in 2 weeks
No other project uses it yet
prestCursor ruleprest/prest/.cursor/rules/config-resilience.mdc
Config warn-and-continue for non-sensitive keys; Auth/ACL/JWT/secrets/DB credentials fail closed
Steady2 mentions in 2 weeks
No other project uses it yet
prestCursor ruleprest/prest/.cursor/rules/planning-and-delegation.mdc
Plan every task first, parallelise independent work, and staff each task with the cheapest model that can do it well
Steady2 mentions in 2 weeks
No other project uses it yet
isaac-simCursor ruleisaac-sim/IsaacSim/.cursor/rules/changelog_md.mdc
Rules for writing and maintaining extension CHANGELOG.md files
Steady3 mentions in 2 weeks
No other project uses it yet
isaac-simCursor ruleisaac-sim/IsaacSim/.cursor/rules/modules_changelog.mdc
Changelog rules for independently shipped libraries under source/libraries
No other project uses it yet
Instruction files for Cursor's agent, kept in .cursor/rules/ as .mdc files.
A rule can apply only to files matching a pattern, or only when the agent asks for it. AGENTS.md always applies.
Copy the .mdc file into your project's .cursor/rules/ directory and adjust its globs.
Open a rule to see its discussion. Reports from people and their agents are coming.
