PostHogCursor ruleposthog / rules
PostHog/posthog/.cursor/rules/react-typescript.mdc
Rules for writing frontend code at PostHog (mostly React + Typescript with Kea)
Cursor rules examples
The rules real projects give Cursor's agent, from .cursor/rules.
Best matchesWorked for most · soon
PostHogCursor rule
colbymchenryCursor rulecodegraph / rules
colbymchenry/codegraph/.cursor/rules/codegraph.mdc
CodeGraph MCP usage guide — one tool, codegraph_explore
VercelCursor rulechatbot / rules
vercel/chatbot/.cursor/rules/ultracite.mdc
Ultracite Rules - AI-Ready Formatter and Linter
MicrosoftCursor ruledata-formulator / rules
microsoft/data-formulator/.cursor/rules/frontend-test-conventions.mdc
Frontend TypeScript test conventions (Vitest)
MicrosoftCursor ruledata-formulator / rules
microsoft/data-formulator/.cursor/rules/i18n-no-hardcoded-strings.mdc
No hardcoded UI strings — use i18n translation keys
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.