Using Claude in Cursor | Installation, Usage, and Comparison Guide
For developers who want to run Claude Code directly inside Cursor, this guide covers the one-click installation of the official Anthropic extension as well as fallback installation paths for when things go wrong. Everything is presented in the fastest possible order to get you up and running — from launching the extension and switching modes to deciding when to use each tool.
Cursor is an officially supported IDE from Anthropic, and the one-click link cursor:extension/anthropic.claude-code is the fastest way to get started. If that doesn't work, try the Extensions panel search, and if that still fails, manual VSIX installation will always get the job done.
To launch the extension, either click the ✦ icon in the top-right corner or search for "Claude Code" via Cmd+Shift+P. On first use, it's best practice to choose normal mode or plan mode to prevent runaway actions. You can use @filename in prompts to explicitly provide context.
The two tools are not competitors — they are complementary. Claude Code excels at autonomous large-scale implementation, while Cursor shines at real-time inline completion. Installing both and switching between them as needed is the most practical approach right now.
目次 (18)
- What Is Cursor? An AI-Native Next-Generation IDE
- What Is Claude Code? An Autonomous Coding Assistant
- How to Install Claude Code in Cursor
- Method 1: One-Click Installation via the Official Link
- Method 2: Search and Install via the Extensions Panel
- Method 3: Manual Installation via VSIX File
- Basic Usage of Claude Code Inside Cursor
- Submitting Prompts
- Switching Permission Modes
- Feature Comparison: Claude Code vs. Cursor
- The Ultimate Workflow: Combining Both Tools
- Common Issues and Troubleshooting
- The Spark Icon Doesn't Appear
- The Extension Is Not Auto-Detected
- No Response or Login Required
- "IDE Is Not Connected" Error
- Summary: The Benefits of Using Claude in Cursor
- Sources
What Is Cursor? An AI-Native Next-Generation IDE
Cursor is an integrated development environment (IDE) forked from VS Code, built with AI assistance at its core. The biggest difference from a standard VS Code extension is real-time inline edit prediction via tab completion. As you type, completion suggestions for the next line or function appear instantly and can be accepted with a single Tab keystroke.
Cursor also stands out for its ability to switch between multiple AI models — including GPT and Gemini — within the same session. Pricing for individual plans starts at $20/month, with some users reporting costs of $60–$200 depending on model usage (see the comparison article by builder.io).
What Is Claude Code? An Autonomous Coding Assistant
Claude Code is a CLI-based AI coding tool provided by Anthropic. Built around an "agent-first" philosophy, it operates autonomously — when a developer describes what they want, Claude traverses files, implements changes, runs tests, and commits — all on its own.
If Cursor is like "the developer drives while AI sits in the passenger seat," Claude Code feels more like "Claude drives while the developer navigates." Its 200K-token context window (expanded to 1M tokens in Opus 4.8 — check the official documentation for the latest specs) allows it to process entire large codebases with full context.
According to the official documentation, Claude Code has official support not only for VS Code but also for Cursor, and can be installed directly as an extension (Anthropic official documentation).
How to Install Claude Code in Cursor
Method 1: One-Click Installation via the Official Link
The easiest method is to use the Cursor-specific install link from the official documentation.
cursor:extension/anthropic.claude-code
Opening this link in a browser or Cursor's address bar will launch the extension installation screen.
Method 2: Search and Install via the Extensions Panel
- Open Cursor and press
Cmd+Shift+X(Mac) orCtrl+Shift+X(Windows/Linux) to open the Extensions panel. - Type "Claude Code" in the search box.
- When the Anthropic extension appears, click Install.
- Restart Cursor after installation completes.
Method 3: Manual Installation via VSIX File
If neither of the above methods works, installing the VSIX file directly is a reliable fallback (for reference when the official steps don't resolve the issue: GitHub Gist by sotayamashita).
cursor --install-extension ~/.claude/local/node_modules/@anthropic-ai/claude-code/vendor/claude-code.vsix
If you use multiple profiles, add the --profile "<profile name>" option. Alternatively, dragging and dropping the .vsix file directly into the Extensions panel has been reported by multiple users as a highly reliable method.
Basic Usage of Claude Code Inside Cursor
After installation, a spark icon (✦) will appear in the top-right corner of Cursor. Clicking it opens the Claude Code panel.
If you can't find the panel, search for "Claude Code" via the Command Palette (Cmd+Shift+P) to find options like "Open in New Tab." You can also launch it from "✱ Claude Code" in the bottom-right status bar.
Submitting Prompts
Simply type what you want in the text input field and press Enter. You can reference files with @filename, and if you have code selected in the editor when you ask a question in the panel, the selected portion is automatically included as context. Use Option+K (Mac) / Alt+K (Windows/Linux) to auto-insert an @mention for the selected range.
Switching Permission Modes
Click the mode indicator below the prompt box to switch between permission modes.
- Normal mode: Asks for confirmation before each action
- Plan mode: Presents a plan before starting work
- Auto-approve mode: Proceeds with edits without confirmation
Normal mode or plan mode is recommended for first-time users.
Feature Comparison: Claude Code vs. Cursor
| Aspect | Claude Code | Cursor |
|---|---|---|
| Operation style | Autonomous execution (Claude leads) | Inline assistance (developer leads) |
| Tab completion | None | Yes (proprietary feature) |
| Multi-file editing | Excellent | Possible, but requires more manual review |
| Supported IDEs | VS Code, Cursor, JetBrains, etc. | Cursor itself (VS Code fork) |
| Model selection | Claude series | GPT, Claude, Gemini, and more |
| Price (individual) | From $20/month | From $20/month |
| Token efficiency | High (reports of 5.5x fewer tokens vs. Cursor for the same task) | Varies by model |
According to the builder.io comparison article, there are reports of Claude Code completing the same tasks using approximately 5.5 times fewer tokens than Cursor.
The Ultimate Workflow: Combining Both Tools
Cursor and Claude Code are "complementary" rather than "competing" tools. Many professional developers already use both together.
Recommended workflow:
- Day-to-day coding: Write quickly using Cursor's tab completion
- Large-scale refactoring and feature additions: Delegate to the Claude Code panel in bulk
- Reviewing and fine-tuning changes: Inspect with Cursor's inline diff view
- Testing and committing: Ask Claude Code to "write tests and commit" all at once
You can also open Cursor's terminal and run the claude command to launch the CLI version of Claude Code from within the IDE — giving you the best of both worlds: IDE visibility and CLI flexibility.
Common Issues and Troubleshooting
The Spark Icon Doesn't Appear
The spark icon only appears when a file is open. It is hidden when only a folder is open. If it still doesn't appear after opening a file, try running "Developer: Reload Window" from the Command Palette.
The Extension Is Not Auto-Detected
If Cursor does not automatically detect Claude Code as a compatible IDE, try the manual VSIX installation method described above. Multiple users have reported that the drag-and-drop method has the highest success rate (for reference when the official steps don't work: sotayamashita's GitHub Gist).
No Response or Login Required
Sign-in is required on first launch. If "Sign in" appears in the panel, click it and complete Anthropic account authentication in the browser. If you have ANTHROPIC_API_KEY set in your shell, launching Cursor from the terminal with cursor . will carry over the environment variable.
"IDE Is Not Connected" Error
If you see the error cursor + claude code: IDE is not connected, you can manually establish the connection with Cursor by running the /ide command from the Claude Code CLI.
Summary: The Benefits of Using Claude in Cursor
Cursor is a polished IDE that prioritizes AI assistance and significantly boosts daily coding productivity. Combining it with Claude Code lets you cover large-scale changes and autonomous task execution — areas where Cursor falls short.
Installation takes just a few minutes. Start by searching for "Claude Code" in Cursor's Extensions panel and try it out. Once you experience the combination of Cursor's real-time completion and Claude's deep comprehension, you won't want to go back.
