# Cursor > Cursor AI-powered code editor with chat. Use for AI-assisted coding. Use when this capability is needed. - Skill: `tomevault-io/cursor` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/cursor` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/cursor/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: AI & ML - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/cursor --- # Cursor Cursor is a fork of VS Code customized for AI. It pioneered **Tab-to-Complete** (Copilot++) and **Composer** (Multi-file edits). In 2025, it is the leading "AI Native" editor. ## When to Use - **Heavy AI Usage**: If you copy-paste to ChatGPT 50 times a day, use Cursor. - **Legacy Refactoring**: "Rewrite this entire legacy class to use React Hooks" works across multiple files. - **Speed**: The "Shadow Workspace" indexing makes AI answers aware of full context instantly. ## Core Concepts ### Composer (Cmd+I) A floating window that can edit multiple files simultaneously. "Add a `verified` field to the User model and update all call sites." ### Tab (Copilot++) Predicts your next _cursor movement_, not just text. It feels like mind-reading. ### Indexing Cursor locally indexes your code (embeddings) so the LLM knows about function definitions in other files without you opening them. ## Best Practices (2025) **Do**: - **Use Rules**: Add a `.cursorrules` file to repo root to instruct the AI (e.g., "Always use Tailwind", "No try/catch blocks"). - **Import VS Code Extensions**: It takes 1 click to migrate everything from VS Code. - **Review Diffs**: Cursor applies changes fast. Always review the diff (`Cmd+Shift+P` -> Accept). **Don't**: - **Don't sleep on Model Toggle**: Switch between `claude-3.5-sonnet` (Coding) and `gpt-4o` (Reasoning) depending on task. ## References - [Cursor Documentation](https://docs.cursor.com/) --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/g1joshi) — claim your Tome and manage your conversions.