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.
thomasetienneCursor rulethomasetienne/invision-ai/.cursor/rules/frontend_development.mdc
Guide complet pour le développement frontend T3 : tRPC React, Server/Client Components, shadcn/ui, nuqs, state management et bonnes pratiques.
0xdfinityCursor rule0xdfinity/fhevm-agent-skill/.cursor/rules/fhevm-agent-skill.mdc
Zama FHEVM skills. Use for confidential Solidity contracts, encrypted frontend flows, tests, deployments, ERC-7984, input proofs, ACL, and decryption.
Fadi88Cursor ruleFadi88/one-man-startup/.cursor/rules/skill-human-design.mdc
Keeps every screen, icon, image and line of interface copy from looking AI-generated - the tells to refuse, what to do instead, and a render-and-inspect gate that the reviewer repeats blind. Use with frontend-design on every design and every ticket that changes what users see.
SirLockeCursor ruleSirLocke/cpux-agent-skills/.cursor/rules/ux-review-walkthrough.mdc
Conduct UX reviews, Persona Walkthroughs, 5-State UI checks, and ISO 9241-110:2020 usability fixes when creating or editing frontend components and templates.
arez-xdCursor rulearez-xd/ux-ui-design-taste/.cursor/rules/design-taste.mdc
Apply senior designer judgment to any frontend UI work. Activates when building, reviewing, or iterating on components, pages, dashboards, or any rendered interface. This skill is the result of hands-on research into what actually works and what doesn't when giving AI agents design judgment.
andr-caCursor ruleandr-ca/agentharness/.cursor/rules/code-review-ui.mdc
Use when reviewing frontend, UI, or component code. Covers accessibility (WCAG AA), state management, bundle size, keyboard navigation, hydration, and rendering performance. Load instead of the general code-review skill for UI-focused reviews.
Fadi88Cursor ruleFadi88/one-man-startup/.cursor/rules/agent-architect.mdc
Software architect for the whole system - keeps the system map, owns cross-cutting decisions (data model, auth, integrations, observability, cost guards), and turns each approved spec into a design, API contract and tickets for the frontend and backend developers, with an ADR for every decision that is expensive to reverse. Use after the readiness gate's design pass for any feature that adds data, an integration or a new surface, and whenever a change crosses module boundaries.
abxn4rCursor ruleabxn4r/archon-skills/.cursor/rules/aperture.mdc
ALWAYS invoke when the user mentions Aperture (e.g., 'Aperture', 'ask Aperture', 'run Aperture', 'consult Aperture') or requests design/UX review, UI audit, frontend polish, or interaction design. Principal Design & UX Director holding interfaces, dashboards, design systems, and components to Linear, Stripe, Vercel, and Apple production standards.
Mostafashadow1Cursor ruleMostafashadow1/agent-skills/.cursor/rules/accessly.mdc
Implement role-based access control (RBAC), permission checks, feature flags and permission-filtered navigation in React or Next.js UIs with the accessly npm package. Use when a task mentions roles, permissions, admin-only buttons, protected pages, 'hide this for users without access', or feature flags in the frontend. (Accessly is about authorization, not accessibility.)
vantionlabsCursor rulevantionlabs/saas-starter/.cursor/rules/impeccable.mdc
Use when the user wants to design, redesign, shape, critique, audit, polish, clarify, distill, harden, optimize, adapt, animate, colorize, extract, or otherwise improve a frontend interface. Covers websites, landing pages, dashboards, product UI, app shells, components, forms, settings, onboarding, and empty states. Handles UX review, visual hierarchy, information architecture, cognitive load, accessibility, performance, responsive behavior, theming, anti-patterns, typography, fonts, spacing, layout, alignment, color, motion, micro-interactions, UX copy, error states, edge cases, i18n, and reusable design systems or tokens. Also use for bland designs that need to become bolder or more delightful, loud designs that should become quieter, live browser iteration on UI elements, or ambitious visual effects that should feel technically extraordinary. Not for backend-only or non-UI tasks.
dirnbauerCursor ruledirnbauer/webconsulting-skills/.cursor/rules/frontend-design.mdc
Use the frontend-design Agent Skill when relevant; read the full skill directory before acting.
apacheCursor ruleapache/superset/.cursor/rules/dev-standard.mdc
Apache Superset development standards and guidelines for Cursor IDE
No other project uses it yet
maybe-financeCursor rulemaybe-finance/maybe/.cursor/rules/general-rules.mdc
Miscellaneous rules to get the AI to behave
streamlitCursor rulestreamlit/streamlit/.cursor/rules/e2e_playwright.mdc
with pytest to e2e test Streamlit library. E2E tests verify the complete Streamlit system (frontend, backend, communication, state, visual appearance) from a user's perspective (black-box). They complement Python/JS
Steady4 mentions in 2 weeks
No other project uses it yet
streamlitCursor rulestreamlit/streamlit/.cursor/rules/overview.mdc
data apps and internal tools. ## Tech Stack - **Backend (Server):** Python, Starlette/Uvicorn server, pytest - **Frontend (Web UI):** TypeScript, React, Emotion (CSS-in-JS), Vite, Vitest - **Communication:** Protocol Buffers (protobuf) over WebSocket
Steady4 mentions in 2 weeks
No other project uses it yet
streamlitCursor rulestreamlit/streamlit/.cursor/rules/protobuf.mdc
alwaysApply: false --- # Protobuf Protobuf messages are used for communication between the Streamlit backend and frontend via WebSocket connections. ## Compile Protobuf Changes requiring compilation: - Adding, modifying, or removing fields Changes
Steady4 mentions in 2 weeks
No other project uses it yet
streamlitCursor rulestreamlit/streamlit/.cursor/rules/python_lib.mdc
error_id`. ## Theming and Layout - **Theming and layout calculations must be done in the frontend, not the Python backend.** - Do not use `get_option("theme.primaryColor")` or similar theme options
Steady4 mentions in 2 weeks
No other project uses it yet
streamlitCursor rulestreamlit/streamlit/.cursor/rules/skills.mdc
specific tasks in the Streamlit codebase. These skills are for **Streamlit library development** (backend, frontend, protobufs), not for building Streamlit applications. User-facing skills that ship with the library live
Steady4 mentions in 2 weeks
No other project uses it yet
streamlitCursor rulestreamlit/streamlit/.cursor/rules/specs.mdc
address` returns `None` on SiS—that's a valid design choice. ## 37. Consider the Frontend-Backend Split Some data lives in the browser (theme type, viewport size) and some
Steady4 mentions in 2 weeks
No other project uses it yet
streamlitCursor rulestreamlit/streamlit/.cursor/rules/typescript.mdc
fine — the rule applies only to files whose sole purpose is re-exporting. ## Key Frontend Principles - Leverage all of best practices of React 18. - Follow the [Rules of React
Steady4 mentions in 2 weeks
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.
