MicrosoftCursor ruledata-formulator / rules
microsoft/data-formulator/.cursor/rules/frontend-test-conventions.mdc
Frontend TypeScript test conventions (Vitest)
Cursor rules examples
The rules real projects give Cursor's agent, from .cursor/rules.
Best matchesWorked for most · soon
MicrosoftCursor ruleMicrosoftCursor ruledata-formulator / rules
microsoft/data-formulator/.cursor/rules/unified-error-protocol.mdc
Unified error handling protocol for backend and frontend
PostHogCursor ruleposthog / rules
PostHog/posthog/.cursor/rules/react-typescript.mdc
Rules for writing frontend code at PostHog (mostly React + Typescript with Kea)
MicrosoftCursor ruledata-formulator / rules
microsoft/data-formulator/.cursor/rules/dataframe-serialization.mdc
DataFrame Serialization All DataFrame-to-records conversion for API responses, streaming events, or frontend-visible data MUST use the centralized helpers in `data_formulator.datalake.parquet_utils`: | Source type | Helper | |---|---| | `pd.DataFrame
MicrosoftCursor ruledata-formulator / rules
microsoft/data-formulator/.cursor/rules/dev-guides-first.mdc
Require reading dev-guides before development and keeping docs in sync
MicrosoftCursor ruledata-formulator / rules
microsoft/data-formulator/.cursor/rules/i18n-no-hardcoded-strings.mdc
No hardcoded UI strings — use i18n translation keys
MicrosoftCursor ruledata-formulator / rules
microsoft/data-formulator/.cursor/rules/implementation-review-checklist.mdc
Require structural code review after implementation before final response
MicrosoftCursor ruledata-formulator / rules
microsoft/data-formulator/.cursor/rules/language-injection-conventions.mdc
Language injection conventions for LLM Agent prompts
triggerdotdevCursor ruletrigger.dev / rules
triggerdotdev/trigger.dev/.cursor/rules/writing-tasks.mdc
Guidelines for writing Trigger.dev tasks
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.