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.
sagarithmCursor rulesagarithm/sagarithm-kit/.cursor/rules/testing-accessibility-auditor.mdc
test cases for visual QA - **Reality Checker**: Supply accessibility evidence for production readiness assessment - **Frontend Developer**: Review component implementations for ARIA correctness - **UI Designer**: Audit design system tokens for contrast
sagarithmCursor rulesagarithm/sagarithm-kit/.cursor/rules/testing-performance-benchmarker.mdc
First Input Delay (FID < 100ms), and Cumulative Layout Shift (CLS < 0.1) - Implement advanced frontend performance techniques including code splitting and lazy loading - Configure CDN optimization and asset delivery strategies
sandraschiDeletes or force-pushesCursor rulesandraschi/virtualization-mcp/.cursor/rules/architect.mdc
Global Architect rules for sandraschi's dev environment (Unity and other integrations, FastMCP, React). See mcp-central-docs integrations.
Fadi88Cursor ruleFadi88/one-man-startup/.cursor/rules/skill-founder-voice.mdc
How to word anything the founder reads or answers - questions, grilling rounds, approvals, decisions, summaries, reports - at the technical level saved in project.toml [owner] level (non-technical, basics or technical). Use before writing any message or document for the founder.
Fadi88Cursor ruleFadi88/one-man-startup/.cursor/rules/skill-frontend-design.mdc
Distinctive, intentional visual design for any UI being built or reshaped - aesthetic direction, typography, layout, motion and interface copy that does not read as a templated default. Use on every ticket that changes what users see.
lacymorrowCursor rulelacymorrow/paperclip-hub/.cursor/rules/security.mdc
Security Best Practices and Guidelines
lacymorrowCursor rulelacymorrow/paperclip-hub/.cursor/rules/testing.mdc
Testing Best Practices and Guidelines
darknecrocitiesReads credentialsCursor ruledarknecrocities/SkillBuilder/.cursor/rules/full-scale-mode.mdc
Master Project Orchestration Engine (aliased as /world-class-engineering). Unifies all 36 SkillBuilder skills across the 5-Stage Lifecycle (Discover, Plan, Build, Harness Loop, Release), Orchestration Memory (.agents/memory/), and the 3-Phase Triad Cadence.
darknecrocitiesCursor ruledarknecrocities/SkillBuilder/.cursor/rules/fullstack.mdc
Fullstack rapid delivery skill with the strict anti-mock mandate. Builds complete vertical slices with real persistence, validation, and zero toy data.
darknecrocitiesCursor ruledarknecrocities/SkillBuilder/.cursor/rules/performance.mdc
Performance profiling and optimization skill. Audits Core Web Vitals (LCP, CLS, INP), N+1 queries, bundle budgets, and memory leaks.
darknecrocitiesCursor ruledarknecrocities/SkillBuilder/.cursor/rules/prompt-polish.mdc
Evaluates, manages, and polishes user prompts into token-efficient, crystal-clear engineering specifications with explicit constraints, verification criteria, and edge-case coverage before code generation.
darknecrocitiesCursor ruledarknecrocities/SkillBuilder/.cursor/rules/qa.mdc
Comprehensive Two-Tier Quality Assurance skill. Features Full UI/Frontend QA (viewports, touch ergonomics, WCAG 2.2 AA, sub-pixel lighting, 120Hz compositor) and Full App Functional QA (state machines, real persistence, 3s/15s network resilience, mobile OS lifecycle, memory leaks, security, and Master Error Catalog).
darknecrocitiesCursor ruledarknecrocities/SkillBuilder/.cursor/rules/research.mdc
Autonomous deep researcher and fallback engine. Evaluates trade-offs and discovers production-grade alternatives when dependencies fail or libraries are deprecated.
darknecrocitiesReads credentialsCursor ruledarknecrocities/SkillBuilder/.cursor/rules/world-class-engineering.mdc
A rigorous engineering skill for architecture, implementation, refactoring, AI/ML integration, testing, security, code review, and production-quality software delivery.
laragenticCursor rulelaragentic/agents/.cursor/rules/callback-system.mdc
Lifecycle callback system design for agentic loops
ALAPI-SDKPipes a download into a shellCursor ruleALAPI-SDK/mcp-alapi-cn/.cursor/rules/mcp.mdc
--- description: globs: alwaysApply: true --- # Example Clients Source: https://modelcontextprotocol.io/clients A list of applications
simtlixCursor rulesimtlix/simfinity.js/.cursor/rules/simfinity-architecture.mdc
Simfinity.js project architecture overview -- always loaded for context
simtlixCursor rulesimtlix/simfinity.js/.cursor/rules/simfinity-documentation.mdc
Maintain the monorepo, package and public website documentation for both databases
simtlixReads credentialsCursor rulesimtlix/simfinity.js/.cursor/rules/simfinity-testing.mdc
Testing conventions, patterns, and requirements for when tests must be updated
Kevin-Liu-01Cursor ruleKevin-Liu-01/Sigil-UI/.cursor/rules/taste-enforcement.mdc
Taste Enforcement — Anti-Slop Frontend Rules > Adapted from [tasteskill.dev](https://www.tasteskill.dev/) for Sigil's token-driven architecture. > These rules override default LLM biases that produce generic, forgettable frontends. > Cross
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.
