Cursor rules examples

novuhqReads credentialsCursor rule

novu / rules

novuhq/novu/.cursor/rules/dashboard.mdc

Rules for working in the Dashboard (React frontend)

backstageCursor rule

backstage / tests

backstage/backstage/.cursor/rules/tests/test-utils.mdc

Enforce usage of @backstage/test-utils in frontend tests

No other project uses it yet

MicrosoftCursor rule

data-formulator / rules

microsoft/data-formulator/.cursor/rules/frontend-test-conventions.mdc

Frontend TypeScript test conventions (Vitest)

MicrosoftCursor rule

data-formulator / rules

microsoft/data-formulator/.cursor/rules/unified-error-protocol.mdc

Unified error handling protocol for backend and frontend

PostHogCursor rule

posthog / rules

PostHog/posthog/.cursor/rules/react-typescript.mdc

Rules for writing frontend code at PostHog (mostly React + Typescript with Kea)

appsmithorgCursor rule

appsmith / testing

appsmithorg/appsmith/.cursor/rules/testing/test-generator.mdc

Test conventions and examples for frontend (Jest/Cypress) and backend (JUnit) — file naming, frameworks, and patterns

No other project uses it yet

appsmithorgCursor rule

appsmith / rules

appsmithorg/appsmith/.cursor/rules/frontend.mdc

React frontend — TypeScript SPA, monorepo packages, Redux-Saga, key directories, testing, and build commands

No other project uses it yet

apacheCursor rule

superset / rules

apache/superset/.cursor/rules/dev-standard.mdc

Apache Superset development standards and guidelines for Cursor IDE

No other project uses it yet

maybe-financeCursor rule

maybe / rules

maybe-finance/maybe/.cursor/rules/general-rules.mdc

Miscellaneous rules to get the AI to behave

streamlitCursor rule

streamlit / rules

streamlit/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

No other project uses it yet

streamlitCursor rule

streamlit / rules

streamlit/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

streamlitCursor rule

streamlit / rules

streamlit/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

streamlitCursor rule

streamlit / rules

streamlit/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

streamlitCursor rule

streamlit / rules

streamlit/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

streamlitCursor rule

streamlit / rules

streamlit/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

streamlitCursor rule

streamlit / rules

streamlit/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

streamlitReads credentialsCursor rule

streamlit / rules

streamlit/streamlit/.cursor/rules/workflows.mdc

unit tests, linting, type checking across all supported Python versions | | `js-tests.yml` | Push/PR to `develop` | Frontend TypeScript linting, type checking, Knip unused-export and unused-dependency analysis (PR-blocking), and Vitest

novuhqCursor rule

novu / rules

novuhq/novu/.cursor/rules/novu.mdc

components/auth-wizard`) - Named exports for all components - TypeScript: `interface` on the backend, `type` on the frontend — this is the project convention and overrides any general "prefer interfaces" guidance - Blank line before

novuhqCursor rule

novu / rules

novuhq/novu/.cursor/rules/packages.mdc

Rules for working in the shared NPM packages

CopilotKitCursor rule

CopilotKit / rules

CopilotKit/CopilotKit/.cursor/rules/agent-development.mdc

Simple agents that handle specific tasks: - File structure: `agent/main.py` or `agent/index.js` - Direct communication with frontend - Good for focused use cases ### Multi-Agent (Coagents) Pattern Complex systems with multiple cooperating agents

No other project uses it yet