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Cursor AI Editor Workflow Guide

Master Cursor's AI-native features for faster, higher-quality coding.

CursorBeginner

Why

According to Sacra, Cursor hit $65M ARR in November 2024 (6,400% YoY growth), and JetBrains' January 2026 AI Pulse survey found 18% of professional developers use Cursor at work. Cursor is a VS Code fork with deep AI integration.

Unlike bolt-on plugins, it understands your entire codebase, supports inline edits via Cmd+K, and offers a chat sidebar with project-wide context. Adopting a structured workflow prevents common pitfalls like accepting hallucinated code or losing track of AI changes.

When

Use Cursor as your daily driver when you want AI-assisted development without leaving the IDE. It excels at: greenfield feature scaffolding, test generation, refactoring across files, and understanding unfamiliar codebases.

Switch to terminal-based tools (Claude Code) for long-running agentic tasks or CI integration.

How

1. Install Cursor from cursor.com — it imports your VS Code extensions and settings automatically. 2. Configure .cursorrules in the project root to give AI project-specific context: - Tech stack (e.g., "Astro 7 + React 18 + Tailwind 3") - Code style rules (e.g., "Use named exports, no default exports except pages") - Architecture constraints (e.g., "Data flows through src/data/*.ts, never inline in components") 3. Daily workflow: - Cmd+K: inline edit — describe the change in natural language, review the diff, accept/reject - Tab: accept inline completion (use Ctrl+→ for partial accept) - Cmd+L: open chat with codebase context — ask "where is X handled?" or "write tests for Y" - @file: reference specific files in chat for targeted context 4. Codebase indexing: Cursor indexes your project on first open. Rebuild via Cmd+Shift+P → "Cursor: Rebuild Index" after large structural changes.

Example

.cursorrules for an Astro + React project: You are working on an Astro 7 static site with React 18 islands. - Build: 'npm run build' (tsc + astro build) - Data source of truth: src/data/*.ts → astro/data/*Index.ts (derived) - Never inline data in components; always import from src/data/ - Use named exports for components; default export only for Astro pages - i18n: 9 locales, en at root, others at /{locale}/ - CSS: Tailwind 3 with spark/ink custom palettes Asking Cursor to "add a /books hub following the existing hub pattern" will now produce code that matches your architecture instead of generic Next.js patterns.

Common Problems

  • ⚠Cursor suggests `import x from 'nonexistent-pkg'` → check package.json; if missing run `npm install <pkg>` and verify the import path resolves.
  • ⚠Error: "Context window exceeded" warning on large files → use @file to scope context, or run Cmd+Shift+P → 'Cursor: Rebuild Index' after structural changes.
  • ⚠Error: Tab completion stops working after branch switch → run `git status` then Cmd+Shift+P → 'Cursor: Rebuild Index'; stale index is the usual cause.
  • ⚠Cursor suggests `import x from 'nonexistent-pkg'` → check package.json; if missing run `npm install <pkg>` and verify the import path resolves.

Best Practices

  • ✓Maintain a .cursorrules file — it is the single highest-leverage configuration for output quality
  • ✓Review every AI diff before accepting; use Cmd+Z liberally
  • ✓Use chat (Cmd+L) for exploration, Cmd+K for surgical edits — don't mix the two
  • ✓Commit before large AI operations so you can git reset if the result is wrong
  • ✓Scope context with @file/@folder to reduce hallucination on large codebases

FAQ

Cursor vs GitHub Copilot: what's the difference?

Cursor is a fork of VS Code with AI baked into the editor (Cmd+K inline edits, codebase-wide chat, project indexing); Copilot is a plugin that adds completions and chat to your existing VS Code. Cursor's deeper integration gives full-codebase context, but means adopting a separate editor.

How does Cursor's context window work?

Cursor indexes your whole project and retrieves relevant chunks per prompt. Scope context with @file/@folder for precision, or let it auto-select. Very large files get truncated, so @file is more reliable than auto-context for big modules.

Is Cursor free or paid?

Cursor has a free tier with limited fast requests and a Pro tier (~$20/mo) with more fast requests and larger models. Slow requests are unlimited on free. Most daily use fits the free tier; heavy all-day AI use benefits from Pro.

Can Cursor understand my entire codebase?

Yes, via its codebase index built on first open. It retrieves relevant files per query. Rebuild after large structural changes (Cmd+Shift+P then Cursor: Rebuild Index). For targeted work, @file references are more precise than auto-retrieval.

How do I avoid AI hallucination in Cursor?

Maintain a .cursorrules with your stack and constraints, scope context with @file instead of whole-folder, and review every diff before accepting. Check that imports resolve and the build passes before committing — hallucinated packages and APIs are the most common failure.