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Tool Guide · Coding

Cursor AI Guide

The most popular AI-native IDE. A VS Code fork with deep model integration, multi-file edits, and a strong agent loop.

5 min readFree tier + Pro ($20/mo) + BusinessUpdated Apr 2026
CursorIDECoding
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Edited by The AIKnowHub team · Editorial team

Key takeaways

  • 1Multi-line tab autocomplete with codebase awareness
  • 2Cmd-K inline edits with diff preview
  • 3Cmd-L chat with @-mentions for files, folders, web, docs
  • 4Agent mode for longer multi-file tasks
  • 5Rules files (.cursor/rules/*.mdc) for project-specific guidance
  • 6Indexed docs — @docs for any framework's documentation
  • 7Privacy mode for sensitive code
  • 8Restore checkpoints for agent runs that go sideways

Best for

  • Day-to-day coding work in a GUI editor
  • UI and front-end work where seeing the file matters
  • Mixed autocomplete + chat + agent workflows
  • Teams already on VS Code who want a familiar shell

Not for

  • Server-side or SSH workflows — use Claude Code
  • Very large codebases (>500K LoC) — indexing slows
  • Workflows that need to span outside the editor

What it is

Cursor is a fork of VS Code where AI is a first-class part of the editor. You keep your extensions, keybindings, and workflow — but get inline edits, an agent mode, and tab-complete that actually understands your codebase.

Core features

  • Tab autocomplete — multi-line, context-aware. Often predicts the next several edits, not just the next token.
  • Cmd-K inline edit — highlight code, describe a change, accept the diff.
  • Cmd-L chat — chat with the codebase. @files, @folders, @web, @docs to scope context.
  • Agent mode — give it a task; it plans, edits across files, and runs commands.
  • Rules — .cursor/rules/*.mdc files inject project-specific guidance into every prompt.

Setting it up well

  1. Add a .cursor/rules/general.mdc with the rules of your codebase (testing, style, what NOT to do).
  2. Choose your default model in settings — typically the strongest available for agent mode.
  3. Index docs: drop in URLs for your favorite framework's docs so @docs works.
  4. Enable / disable Privacy Mode based on your data sensitivity.

When Cursor beats Claude Code

  • You want a graphical diff before accepting changes.
  • You're doing UI work and want the file open while you edit.
  • You prefer mouse + keyboard over pure terminal.
  • You want one tool for all coding (autocomplete, chat, agent).

When Claude Code beats Cursor

  • The task is long-running and you want it in the background.
  • You're SSH'd into a server.
  • You want fine-grained hooks and MCP control.
  • You want to script around the agent.

Tips

  • Treat tab-complete as a multi-line proposal — don't accept blindly.
  • Keep agent runs scoped. Massive multi-file refactors do better when broken into pieces.
  • Use the "Restore checkpoint" feature when an agent run goes sideways.
  • @docs is criminally underused.

What it isn't great at

  • Very large codebases (>500K LoC) — indexing gets slow.
  • Languages without strong type info — the autocomplete leans heavily on types.
  • Workflows that need to span outside the editor (use Claude Code or another shell agent).

Pros and cons

Pros

  • Best-in-class tab autocomplete
  • Familiar VS Code feel with all your existing extensions
  • Strong agent mode with restore checkpoints
  • Decent free tier to try before paying

Cons

  • Pro tier required for serious daily use
  • Indexing performance degrades on huge repos
  • Some lock-in to Cursor's UI conventions

Real workflows using this tool

Prompt examples

Copy any of these, replace the placeholders, run.

Project rules file (.cursor/rules/general.mdc)

# Conventions for this codebase

- We use TypeScript strict mode. No any types in new code.
- Tests live next to source: foo.ts has foo.test.ts.
- Use functional React components with hooks. No class components.
- Format with prettier on save.
- Commit messages: type(scope): summary
  - Types: feat, fix, chore, docs, refactor, test

# Don't
- Don't add new dependencies without asking.
- Don't refactor code outside the scope of the request.
- Don't suppress lint or type errors — fix them or surface them.

Targeted edit with Cmd-K

Extract this component into its own file. Keep the same props API.
Update imports in this file but don't touch other files.

Agent mode scoped task

Add a /pricing page using the same layout as /about.
Source the plan data from a new constants/pricing.ts file.
Run the build when you're done and fix any errors.
Don't touch /about or other existing pages.

Alternatives

Claude CodeWindsurfZedContinueAider

Frequently asked questions

There's a generous free tier with limited fast requests and basic autocomplete. Daily use almost always requires the $20/mo Pro plan.

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