Cursor is where a huge share of real-world vibe coding happens: familiar enough that developers do not have to leave their editor, capable enough that non-developers can build in it. But most people use about a third of what makes it good. This guide covers the workflow that gets you the rest.
If you are still choosing your tool, the landscape is in the best vibe coding tools; this guide assumes you have picked Cursor or want to see what it is like.
What Cursor Is
Cursor is an AI-first fork of VS Code. Everything VS Code does works, every extension included, with AI woven into three layers: inline completions as you type, a chat that knows your codebase, and Composer, the agent mode that takes a feature description and edits across many files at once. Vibe coding in Cursor mostly means living in that third layer.
The Composer Workflow
Open Composer in agent mode and work in feature-sized requests:
- Brief it like a colleague. "Add a billing history page. Pull invoices from the Stripe API, table layout matching the users page, newest first, empty state if there are none."
- Reference, don't hope. Use @ to point at files and docs: "@users-page.tsx use this layout as the pattern." The single biggest quality lever in Cursor is telling it what to imitate instead of letting it guess.
- Review the diff at your level. Cursor shows every change before you accept. Beginners can skim what files changed and why; developers should actually read anything touching data or auth. This checkpoint is what makes Cursor's brand of vibe coding more controllable than browser builders.
- Iterate in single complaints. One correction per message, run between each. Same loop as everywhere, faster feedback than anywhere.
.cursorrules: Write It Before You Need It
Cursor reads a .cursorrules file from your project root and applies it to every AI interaction. Three lines about your stack, your conventions, and what to avoid will noticeably change output quality:
Use TypeScript strict mode. Follow the existing component patterns in src/components.
Never put API keys client-side. Use the existing api client in src/lib/api.ts for all requests.
Prefer editing existing files over creating new ones.
Most quality complaints about Cursor are actually missing-rules complaints.
Where Cursor Sessions Go Wrong
The failure mode is always the same: requests too big, accepted too fast. A "build the whole dashboard" prompt produces a thousand-line diff nobody reviews, which works in the demo and hides three problems for later. The discipline that fixes it is boring: smaller asks, run between accepts, and read the diff on anything that scares you. The rest of the discipline list lives in vibe coding best practices.
The deeper failure mode is architectural. Cursor generating a SaaS from an empty folder invents its own auth, billing, and structure, and unreviewed AI implementations of exactly those parts are where the security findings cluster.
The Foundation Move
The fix is the same one experienced builders apply to every agentic tool: give Cursor a codebase where the dangerous parts are already done. Start from a production boilerplate with human-audited auth and Stripe billing, open it in Cursor, write a .cursorrules pointing at its conventions, and aim Composer exclusively at your product features.
Cursor is dramatically better in this setup, extending real patterns instead of hallucinating architecture, and your risk profile changes completely because the code that can hurt you has a human author. We wrote a dedicated playbook for this exact combination in Cursor plus a SaaS boilerplate; it is the recommended next read if you are building something real.
If the project is funded, there is also the option most tutorials skip: hire experts for the production build and keep Cursor for your own iteration on top. When the math of your time works out, it is the better deal; our budget-ranked vendor list is in how to hire a company to build a custom AI product.
Frequently Asked Questions
Is Cursor good for vibe coding?
Yes, it is arguably the most popular serious vibe coding tool. Composer's agent mode handles feature-level requests across many files, and the diff review step gives you more control than browser builders. The trade-off is a mild learning curve if you have never used an editor like VS Code.
Do I need to know how to code to use Cursor?
Less than you would think. Non-developers ship real projects in Cursor by working entirely through Composer in plain language. Familiarity with reading diffs grows naturally with use, and the AI will explain any code you ask about.
What is .cursorrules and do I need one?
A plain text file in your project root that Cursor applies to every AI interaction: your stack, conventions, and constraints. You need one the moment a project matters; it is the highest-leverage five minutes in the entire Cursor workflow.
Should I start my SaaS from scratch in Cursor?
Start from a boilerplate instead. Cursor extending an audited codebase with working auth and payments produces better, safer output than Cursor inventing those systems from a blank folder, and your prompting budget goes to features that differentiate your product.