appsmithorgCursor ruleappsmith / verification
appsmithorg/appsmith/.cursor/rules/verification/bug-fix-verifier.mdc
Bug fix quality checklist — reproduction, root cause analysis, testing, and regression prevention
Cursor rules examples
The rules real projects give Cursor's agent, from .cursor/rules.
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Files you open will collect here, so you can find them again.
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appsmithorgCursor rule
PostHogCursor ruleposthog / rules
PostHog/posthog/.cursor/rules/django-python.mdc
Rules for writing Python services at PostHog (Python servers powered by the Django framework)
1 project uses a version of this
PostHogCursor ruleposthog / rules
PostHog/posthog/.cursor/rules/rust.mdc
Rules for writing Rust services at PostHog. Focuses on writing async Rust with Tokio and encoding general Rust best practices from the Rust book and docs.
1 project uses a version of this
CopilotKitCursor ruleCopilotKit / rules
CopilotKit/CopilotKit/.cursor/rules/development-workflow.mdc
scripts/qa)** - Quality assurance and testing scripts - **[release/](mdc:scripts/release)** - Release automation scripts ### Documentation Scripts - **[docs/](mdc:scripts/docs)** - Documentation generation and management ## Package Management - Uses pnpm workspaces for package management - Local
No other project uses it yet
CopilotKitCursor ruleCopilotKit / rules
CopilotKit/CopilotKit/.cursor/rules/frontend-development.mdc
state }) useCopilotAction({ name: "update_state", description: "Update application state", parameters: [/* ... */], handler: (args) => { setState(args.newState) } }) } ``` ## Documentation Components - **[docs/components/react/](mdc:docs/components/react/)** - React component documentation - **[docs/components/ui/](mdc:docs/components/ui/)** - UI component library - **[docs/snippets
No other project uses it yet
CopilotKitCursor ruleCopilotKit / rules
CopilotKit/CopilotKit/.cursor/rules/quick-reference.mdc
Components - Browse [registry/](mdc:registry) for reusable components - Check [docs/components/react/](mdc:docs/components/react) for documentation - Use [react-ui/](mdc:packages/react-ui) for pre-built components ### Set Up Development Environment - Review [package.json
No other project uses it yet
jdxCursor rulemise / rules
jdx/mise/.cursor/rules/conventional_commits.mdc
how to write commit and PR titles
No other project uses it yet
surrealdbCursor rulesurrealdb / rules
surrealdb/surrealdb/.cursor/rules/bug-investigation.mdc
Search for similar functionality patterns in the codebase to understand intended behavior - Consult SurrealQL documentation at https://surrealdb.com/docs or existing examples before assuming something is broken ## 2. Reproduce
No other project uses it yet
surrealdbCursor rulesurrealdb / rules
surrealdb/surrealdb/.cursor/rules/pull-requests.mdc
testing'. ### Security Considerations Briefly assess security implications. If there are none, state why (e.g. "documentation-only change", "build profile change only"). If there are security implications, assign the `security-review
No other project uses it yet
simstudioaiCursor rulesim / rules
simstudioai/sim/.cursor/rules/emcn-components.mdc
EMCN component library patterns
Steady23 mentions in 2 weeks
No other project uses it yet
simstudioaiCursor rulesim / rules
simstudioai/sim/.cursor/rules/landing-seo-geo.mdc
SEO and GEO guidelines for the landing page
Steady23 mentions in 2 weeks
No other project uses it yet
simstudioaiCursor rulesim / rules
simstudioai/sim/.cursor/rules/sim-content-delivery.mdc
How stored content (workspace files, run files, knowledge, table rows) reaches Chat's model, and the per-path policy. Read before changing a use case, route or Chat surface that returns such content.
Steady23 mentions in 2 weeks
No other project uses it yet
simstudioaiCursor rulesim / rules
simstudioai/sim/.cursor/rules/sim-settings-pages.mdc
Settings page layout and SettingsPanel design-system compliance
Steady23 mentions in 2 weeks
No other project uses it yet
simstudioaiCursor rulesim / rules
simstudioai/sim/.cursor/rules/sim-styling.mdc
Tailwind CSS and styling conventions
Steady23 mentions in 2 weeks
No other project uses it yet
simstudioaiCursor rulesim / rules
simstudioai/sim/.cursor/rules/sim-url-state.mdc
Shareable client view-state lives in the URL via nuqs
Steady23 mentions in 2 weeks
No other project uses it yet
HumanSignalCursor rulelabel-studio / rules
HumanSignal/label-studio/.cursor/rules/cypress_tests.mdc
Writing and updating cypress integration tests
No other project uses it yet
HumanSignalCursor rulelabel-studio / rules
HumanSignal/label-studio/.cursor/rules/design.mdc
Design system and UI consistency guidelines for Label Studio
No other project uses it yet
HumanSignalCursor rulelabel-studio / rules
HumanSignal/label-studio/.cursor/rules/react.mdc
React coding standards and best practices for the LabelStudio clientside application
HumanSignalCursor rulelabel-studio / rules
HumanSignal/label-studio/.cursor/rules/storage-provider.mdc
How to add a new storage or data connector for Label Studio
HumanSignalCursor rulelabel-studio / rules
HumanSignal/label-studio/.cursor/rules/tailwind.mdc
Tailwind CSS and UI component best practices for the LabelStudio clientside application
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.