Production-ready Cursor rules for frontend devs, SaaS founders, backend engineers, and 12+ more roles. Built by AI power users. Updated monthly as Cursor evolves.
Every developer who opens Cursor for the first time faces the same wall: the default rules are too generic to be useful, and writing good ones from scratch takes longer than the work itself.
Without a strong .cursorrules file, Cursor keeps making the same wrong assumptions — suggesting the wrong framework, missing your naming conventions, and generating boilerplate you immediately delete.
You paste the same context into every new chat: "I use React, TypeScript, Tailwind, Postgres, deployed on Fly.io..." A good .cursorrules file encodes this once. Most devs never write one.
Even the devs who write a .cursorrules file from scratch end up with a patchwork of half-remembered rules that no longer reflect how they actually code. Cursor ignores stale rules — or worse, follows them.
Instead of starting from a blank file, you start from a template engineered by developers who have pushed Cursor to its limits. Drop it in. Customize 3 fields. Your Cursor session now knows exactly who you are, what you're building, and how you code.
Each template is built for a specific engineering role — not a generic "developer." The frontend template knows about component architecture. The SaaS template knows about multi-tenancy and Stripe webhooks.
Every template has exactly three blanks: your stack, your database, and your deploy target. Fill those in and you have a complete, professional .cursorrules file in under five minutes.
Cursor changes its rules format and capabilities every few months. Brainfile Pro subscribers get updated templates automatically. Your .cursorrules never goes stale.
Each template encodes the conventions, patterns, and guardrails that matter most for that engineering role. No fluff, no generic advice — only rules that change how Cursor behaves.
No configuration files to write. No trial and error. Pick your role, add three lines of context, and Cursor immediately understands how you build.
Browse the library and select the template that matches how you actually work. Frontend, backend, SaaS, DevOps, mobile, data, or AI/ML — every role has a template built by engineers who live in that stack daily.
→Fill in your framework, your database, and your deploy target. The template pre-fills everything else — conventions, patterns, guardrails — based on what engineers in your role actually care about.
→Save the file as .cursorrules in your project root. Open Cursor. It reads the file automatically. No setup, no config, no API keys. It just works.
Writing a great .cursorrules file from scratch is a 2–4 hour project the first time, and an ongoing maintenance burden after that. Here's how Brainfile compares.
| Category | ✦ Brainfile Pro | Write your own |
|---|---|---|
| Time to set up | 5 minutes — pick template, fill in 3 fields, drop in project | 2–4 hours — research conventions, write rules, test, iterate |
| Template quality | Expert-engineered by AI power users with 1,000+ hours in Cursor | Trial and error — most homemade rules miss critical edge cases |
| Monthly updates | Yes — templates updated as Cursor's rule format and capabilities evolve | Manual — you research and update yourself when Cursor changes |
| Role coverage | 12+ specialized roles — frontend, backend, SaaS, DevOps, mobile, data, AI/ML, and more | Your one role — any additional templates require hours more work |
| Cursor version sync | Automatic — Pro subscribers receive updated templates on every Cursor release | Manual — stale rules silently reduce Cursor's output quality |
| Team sharing | Commit your .cursorrules to git — every engineer on your team works from the same baseline | Possible, but ad-hoc rules without peer review drift over time |
| Works alongside CLAUDE.md | Yes — Brainfile templates exist for both Cursor (.cursorrules) and Claude Code (CLAUDE.md) | You'd have to write two separate files yourself |
| Support | Active support + template request forum for Pro and Enterprise subscribers | Stack Overflow and documentation — no dedicated help |
150+ production-ready .cursorrules templates. 12+ dev roles. Updated every month. Works in every Cursor project, every language, every framework.
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