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.
ReefJediCursor ruleReefJedi/coding-agent-prompts/.cursor/rules/debugger.mdc
Root-cause debugger. Use when a test fails, an error or stack trace appears, or behavior is wrong. Reproduces, isolates with evidence, applies the minimal fix plus a regression test.
vltpkgCursor rulevltpkg/vltpkg/.cursor/rules/code-validation-workflow.mdc
Code validation workflow (format, lint, test, coverage, typecheck)
brendadeeznuts1111Cursor rulebrendadeeznuts1111/betting-brain-v3/.cursor/rules/analytics-testing.mdc
Analytics testing patterns and best practices
MicrosoftCursor rulemicrosoft/data-formulator/.cursor/rules/incremental-development-cadence.mdc
Enforce step-by-step implementation with design-doc checks, tests, and i18n after each step
pr-pmCursor rulepr-pm/prpm/.cursor/rules/testing-patterns.mdc
Testing patterns and best practices for PRPM codebase with Vitest
mrcbrbn5361Cursor rulemrcbrbn5361/SyncytiumMD/.cursor/rules/testing-standards.mdc
Quality assurance and test verification guidelines
masterfabric-mobileCursor rulemasterfabric-mobile/osmea/.cursor/rules/osmea-packages-general.mdc
OSMEA packages - structure, dependencies, docs, testing, publishing
ethereumjsCursor ruleethereumjs/ethereumjs-monorepo/.cursor/rules/typecheck.mdc
After TS edits, run tsc in the touched package; a green test run is not tsc
No other project uses it yet
NVIDIAReads credentialsCursor ruleNVIDIA/NeMo-Agent-Toolkit/.cursor/rules/general.mdc
Follow these rules when creating, modifying, or generating any code, tests, documentation, or configuration files
Steady2 mentions in 2 weeks
1 project uses a version of this
ori88c-python-templatesCursor ruleori88c-python-templates/fastmcp-polyrepo-template/.cursor/rules/tests.mdc
Test layout and the ban on monkeypatching
streamshubCursor rulestreamshub/streamshub-mcp/.cursor/rules/test-coverage.mdc
Test coverage analysis for StreamsHub MCP
ROCmCursor ruleROCm/AMDMIGraphX/.cursor/rules/split-sym-dim-pass-tests.mdc
Enforce structural testing for the split_sym_dim transformation pass
OneKeyHQCursor ruleOneKeyHQ/app-monorepo/.cursor/rules/self-testing.mdc
Mandatory self-testing checklist before completing any task — applies to all team members
Steady3 mentions in 2 weeks
No other project uses it yet
vantionlabsCursor rulevantionlabs/saas-starter/.cursor/rules/effect-form-e2e.mdc
Use when adding or changing a form, a field's validation rules, or a Playwright test in this repository. Covers why a form is effect-form and lives in the app rather than the design system, declaring field rules once in the contract, telling a validation failure apart from a refusal, and the e2e harness's rules — a user per test, waiting on a condition rather than sleeping.
alchemyplatformCursor rulealchemyplatform/aa-sdk/.cursor/rules/testing.mdc
Vitest projects, Anvil, Rundler, and affected-test guidance
trypostitCursor ruletrypostit/trypost/.cursor/rules/tests-pest.mdc
Pest 5 feature/unit tests — file location, named routes, factories
colchuck-aiCursor rulecolchuck-ai/ai-resource-manager/.cursor/rules/grug-brained-dev/grug-brained-dev_test-simply.mdc
Write simple, focused tests that verify behavior
j4flmaoCursor rulej4flmao/agent-skills/.cursor/rules/testing-requirements.mdc
j4flmao/rules — Mandatory testing requirements when generating code
ivangrynenkoCursor ruleivangrynenko/cursorrules/.cursor/rules/tests-documentation-maintenance.mdc
Require tests for new functionality and enforce documentation updates.
plipowczanCursor ruleplipowczan/claude-piv-skeleton/.cursor/rules/piv-tdd.mdc
PIV TDD enforcement for test files
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.
