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.
streamlitCursor rulestreamlit/streamlit/.cursor/rules/overview.mdc
clear error, a short doc note, or leaving the code as is. Security issues and data loss still need a real fix. This applies to review feedback too: a reviewer
Steady4 mentions in 2 weeks
No other project uses it yet
streamlitCursor rulestreamlit/streamlit/.cursor/rules/python_lib.mdc
Production code must remain compatible with Python/OpenSSL environments running in FIPS mode. - For non-security hashing, use `streamlit.util.create_fast_hasher` (incremental hashing) or `calc_hash` (one-shot string/bytes hashing) instead
streamlitCursor rulestreamlit/streamlit/.cursor/rules/specs.mdc
working app is to hit it later. Preventing wrong results, data loss, or a security problem justifies an exception; enforcing tidy usage does not. ## 24. Leverage Markdown Everywhere Wherever text
streamlitReads credentialsCursor rulestreamlit/streamlit/.cursor/rules/workflows.mdc
snapshots | | `spec-validation.yml` | PR with `change:spec` label | Validates product spec PRs in `specs/` directory | ### Security & Analysis | Workflow | Trigger | Description | |----------|---------|-------------| | `codeql-analysis.yml` | Push/PR to `develop`, weekly | GitHub CodeQL security scanning
appsmithorgReads credentialsCursor ruleappsmithorg/appsmith/.cursor/rules/build/docker.mdc
Docker image optimization — minimal base images, layer caching, multi-stage builds, and size reduction
PostHogCursor rulePostHog/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
novuhqCursor rulenovuhq/novu/.cursor/rules/pnpm-release-age.mdc
pnpm minimumReleaseAge — never bypass for fresh publishes
No other project uses it yet
jdxCursor rulejdx/mise/.cursor/rules/conventional_commits.mdc
how to write commit and PR titles
No other project uses it yet
surrealdbCursor rulesurrealdb/surrealdb/.cursor/rules/pull-requests.mdc
strategy, and new tests are added, describe the changes. Otherwise insert 'GitHub Actions testing'. ### Security Considerations Briefly assess security implications. If there are none, state why (e.g. "documentation-only change
Steady2 mentions in 2 weeks
No other project uses it yet
simstudioaiCursor rulesimstudioai/sim/.cursor/rules/constitution.mdc
Sim product language, positioning, and tone guidelines
Steady47 mentions in 2 weeks
No other project uses it yet
simstudioaiCursor rulesimstudioai/sim/.cursor/rules/sim-testing.mdc
Test layers, naming, and Vitest mechanics for Sim
Steady47 mentions in 2 weeks
No other project uses it yet
simstudioaiCursor rulesimstudioai/sim/.cursor/rules/sim-ui-copy.mdc
UI copy conventions — no default subtitles or helper text under headings, labels, cards, or settings
Steady47 mentions in 2 weeks
No other project uses it yet
HumanSignalCursor ruleHumanSignal/label-studio/.cursor/rules/storage-provider.mdc
How to add a new storage or data connector for Label Studio
eyaltoledanoReads credentialsCursor ruleeyaltoledano/claude-task-master/.cursor/rules/mcp.mdc
Guidelines for implementing and interacting with the Task Master MCP Server
Coolinginterest down 69% this month
eyaltoledanoReads credentialsCursor ruleeyaltoledano/claude-task-master/.cursor/rules/taskmaster.mdc
Comprehensive reference for Taskmaster MCP tools and CLI commands.
Coolinginterest down 69% this month
eyaltoledanoReads credentialsCursor ruleeyaltoledano/claude-task-master/.cursor/rules/taskmaster/taskmaster.mdc
Comprehensive reference for Taskmaster MCP tools and CLI commands.
Coolinginterest down 69% this month
dyad-shCursor ruledyad-sh/dyad/.cursor/rules/ipc.mdc
description: globs: alwaysApply: true --- You're building an Electron app following good security practices # IPC Structure: - [ipc_client.ts](mdc:src/ipc/ipc_client.ts) - lives in the renderer process and is used to send IPCs
Steady5 mentions in 2 weeks
No other project uses it yet
MicrosoftCursor rulemicrosoft/data-formulator/.cursor/rules/error-response-safety.mdc
Prevent information exposure through exception messages in HTTP responses
MicrosoftCursor rulemicrosoft/data-formulator/.cursor/rules/path-safety.mdc
路径安全编码规范 — 编辑路由/Agent/Loader/Workspace/知识库代码时自动提醒
MODSetterCursor ruleMODSetter/SurfSense/.cursor/rules/ponytail.mdc
Ponytail, lazy senior dev mode. Always pick the simplest solution that works.
1 project uses a version of this
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.
