Founders often need to prototype, iterate, and understand code quickly. Cursor is an AI‑powered coding assistant that can write, explain, and refactor code inside your favorite editor. This guide walks you through installing Cursor, configuring it for a startup, and using it to speed up product development.
Cursor works on macOS, Windows, and Linux. Follow the steps that match your OS.
brew install cursor-ai/cursor/cursor
Homebrew will download the latest stable version (currently 0.9.3).
curl -fsSL https://cursor.com/install.sh | bash
The script adds a systemd service that keeps the AI daemon running in the background.
Most founders store code on GitHub. Cursor can read private repos securely.
cursor auth login in your terminal.cursor auth login
# → Opens https://cursor.com/oauth
# Paste token: ***************
Create a .cursorrc.json at the root of your project:
{
"projectId": "my-startup-app",
"include": ["src/**/*.js","public/**/*.html"],
"exclude": ["node_modules","dist"]
}
This file tells Cursor which files to index for faster suggestions.
Let’s add a simple “Subscribe” form to a React landing page.
In VS Code, open src/components/Footer.jsx. Place the cursor where you want the form.
Press Ctrl+Shift+P → “Cursor: Ask”. Type:
Add a newsletter subscription form with email validation. Use Tailwind CSS and submit to https://api.example.com/subscribe.
Cursor returns a full component in under a second.
import { useState } from "react";
export default function SubscribeForm() {
const [email, setEmail] = useState("");
const [status, setStatus] = useState(null);
const handleSubmit = async (e) => {
e.preventDefault();
if (!/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(email)) {
setStatus("invalid");
return;
}
const res = await fetch("https://api.example.com/subscribe", {
method: "POST",
headers: {"Content-Type":"application/json"},
body: JSON.stringify({email})
});
setStatus(res.ok ? "success" : "error");
};
return (
);
}
Review the code, run npm run dev, and you’ll see the form live.
Cursor can also explain errors and suggest fixes.
When the terminal shows ReferenceError: setStatus is not defined, select the line and ask:
Why is setStatus undefined here?
Cursor replies:
setStatus is a state setter returned by useState. It must be declared in the same component scope. Move the declaration const [status, setStatus] = useState(null); above the handleSubmit function.
Enable the built‑in linter by adding to .cursorrc.json:
{
"lint": true,
"lintRules": ["react-hooks/exhaustive-deps","no-unused-vars"]
}
Cursor will underline issues in real time, similar to ESLint.
Founders often work with remote developers. Cursor offers shared sessions and comment threads.
cursor share start in the project root.
Highlight a block of code, press Alt+C, and type a comment. The AI can reply with a suggested change, creating a lightweight code review system.
Below is a quick side‑by‑side comparison of Cursor, GitHub Copilot, and Tabnine for early‑stage startups.
| Feature | Cursor | GitHub Copilot | Tabnine |
|---|---|---|---|
| Free tier | 30 min/day AI time | 60 min/day (limited models) | No free tier |
| Team sharing | Live shared sessions | Only via VS Code Live Share | None |
| Repo access | Private GitHub/GitLab integration | Read‑only snippets | Read‑only snippets |
| Pricing (pro) | $15/mo per user | $10/mo per user | $20/mo per user |
| Explain code | Built‑in Q&A | Limited to comment generation | None |
| Custom models | Yes (via OpenAI API key) | No | No |
For founders who need rapid prototyping and a shared AI workspace, Cursor provides the best balance of cost and collaboration.
Cursor is an AI‑driven coding assistant that integrates with your editor to generate, explain, and refactor code on demand.
The free tier offers 30 minutes of AI time each day, enough for most early prototypes. Paid plans start at $15 per month for unlimited usage.
Yes. Connect via OAuth to GitHub or GitLab and grant read/write permissions. All traffic is encrypted.
Cursor sends prompts to OpenAI’s API over HTTPS. It does not retain your code after the response unless you enable optional logging.
Cursor can generate UI snippets, explain code, and help you ask the right technical questions. Pair it with a developer for production‑grade code.
Using Cursor lets founders move from idea to demo faster. Install it, connect your repo, and start generating code today.