Free .cursorrules Generator — Build Your Cursor AI Rules File

Pick your stack, add your preferences, hit generate. Get a .cursorrules file that makes Cursor act less annoying.

Languages

Frameworks

Target platform

Where the code runs. Affects APIs, memory constraints, and OS-specific rules.

Style rules

Constraints

Ask before deleting files Do not add third-party dependencies without asking Match surrounding code style Do not refactor unrelated code Explain plan before large changes Prefer small, focused diffs Token-efficient editing (grep + line slices, not full-file reads) Maintain PROJECT_STATE.md checkpoint file

Verification / closed-loop feedback

Force the AI to actually run typecheck / lint / tests and iterate on the output — instead of declaring "done" while the code doesn't compile.

After any change, run `./verify.sh` and iterate until exit 0 Always run typecheck after edits and read the output Always run linter after edits and fix reported issues Always run the relevant test file after touching prod code Never mark a task complete until typecheck + lint + tests are green On failures, fix the FIRST error only, then re-run — no batch fixes Never silence errors (`#[allow]`, `eslint-disable`, `# type: ignore`) to pass

Negative constraints (anti-hallucination, anti-bloat)

Telling the model what NOT to do is often 2x more effective than positive rules.

Never invent packages or CLI flags without verifying Do not rewrite 400-line files for 2-line changes No comments explaining self-explanatory code Never fix bugs outside the current task silently Never guess an API signature — read the file first Never generate tests that always pass (`assert(true)`) Never swallow exceptions to make code "work" Do not add abstractions for one caller

Project description (optional)
Custom rules (one per line)

Your .cursorrules

What is a .cursorrules file?

A .cursorrules file sits at the root of your project. Cursor reads it and injects it as a system prompt into every AI request. Good rules make Cursor stop being annoying about comments, testing patterns, and third-party additions you never asked for.

.cursorrules Generator

Your .cursorrules

What is a .cursorrules file?

How to use the file

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