Opening Chat in Cursor for the first time

Chat in Cursor is a built-in feature that lets you talk to an AI assistant while you code. To open it, press Ctrl+L on Windows or Linux, or Cmd+L on Mac. A chat panel will appear on the right side of your editor window. If that keyboard shortcut doesn't work, you can also click the chat icon in the left sidebar — it looks like a speech bubble — or go to the View menu and select "Chat".

The first time you open Chat, Cursor will ask you to sign in or create an account. You'll need an email address and a password. After you sign in, the chat window stays open until you close it, and it remembers your conversation history within that session. If you close Cursor and reopen it, your old chats are still there in the sidebar under "Chat History".

Once Chat is open, you can start typing questions or requests directly into the text box at the bottom. The AI will respond in the panel above. You can ask it to explain code, write new code, debug errors, or refactor what you've already written. The chat stays connected to your current file, so the AI can see what you're working on and give you more relevant answers.

Key Takeaways

  • Press Ctrl+L (Windows/Linux) or Cmd+L (Mac) to open Chat, or click the speech bubble icon in the left sidebar.
  • You must sign in with an email and password before you can use Chat for the first time.
  • Chat can see your current file and project context, so be careful not to paste sensitive information like API keys or passwords into the chat window.
  • Your chat history is saved in Cursor and visible in the sidebar, so anyone with access to your computer can see what you've asked the AI.
  • Chat responses are sent to Cursor's servers, so treat it the same way you would treat sharing code with a colleague — don't paste anything you wouldn't want to leave your machine.

What information Chat can see about your code

When you have a file open in Cursor and you ask Chat a question, the AI can see the code in that file. If you highlight a specific section of code before opening Chat, the AI will focus on that part. This is useful when you want help with just one function or a small block of code rather than your entire project.

Chat does not automatically see files you haven't opened. It cannot browse your entire project folder or read files in the background. You have to explicitly show it the code you want help with, either by having the file open or by copying and pasting the relevant lines into the chat window.

Keep in mind that anything you type into Chat — including code snippets, error messages, and questions — is sent to Cursor's servers. If your code contains secrets like database passwords, API keys, or authentication tokens, do not paste them into Chat. Remove or replace those values before you share the code with the AI.

Keeping your conversations private

Your Chat history is stored locally on your computer in Cursor's data folder. Anyone who can access your user account on that computer can see your chat conversations. If you share your computer with other people, they can open Cursor and read what you've asked the AI.

If you want to delete a conversation, right-click on it in the Chat History sidebar and select "Delete". You can also clear all chat history by going to Settings (Ctrl+, on Windows/Linux or Cmd+, on Mac), searching for "Chat", and looking for a clear history option. The exact location varies depending on your Cursor version.

Cursor's servers store a copy of your chats as well. If you want to know what data Cursor keeps and for how long, check their privacy policy on the Cursor website. The policy explains what happens to your conversations and whether Cursor uses them to train its AI models.

Using Chat without sharing sensitive project files

If you're working on a private project or code that contains business secrets, you can still use Chat safely by being selective about what you show it. Instead of pasting your entire file, copy only the parts you need help with and remove any sensitive context. For example, if you're debugging a database query, you can share the query structure without the actual database name or credentials.

Another approach is to ask Chat questions in general terms. Instead of "Why is my API call to example.com/private-endpoint failing?", you could ask "What are common reasons an HTTP request returns a 403 error?" The AI can still help you think through the problem without learning details about your specific system.

If your workplace has rules about what code can leave your computer, check with your manager or security team before using Chat. Some organizations require you to use only internal tools or to get permission before sending code to outside services.

Troubleshooting Chat when it won't open

If the keyboard shortcut doesn't open Chat, make sure you're focused on the Cursor editor window — not a terminal or another process. Click in the code editor area first, then try the shortcut again. If that doesn't work, try clicking the speech bubble icon in the left sidebar instead.

If Chat opens but won't respond to your messages, check your internet connection. Chat requires a live connection to Cursor's servers. If you're offline or behind a firewall that blocks Cursor's servers, Chat won't work. Try opening a web browser and visiting a website to confirm you have internet access.

If you see an error message, try signing out and signing back in. Go to the Cursor menu (or File menu on Windows), look for Account or Settings, and find the sign-out option. Then restart Cursor and sign in again. This often fixes temporary connection problems.

Choosing between Chat and other AI tools

Cursor's Chat is built into the editor, which makes it fast and convenient. You don't have to switch windows or open a web browser. However, other AI tools like ChatGPT, Claude, or GitHub Copilot have different privacy policies and different capabilities. If you're concerned about what data Cursor stores, you might prefer to use a separate tool where you have more control over what information you share.

Some developers use Chat for quick questions and explanations, but use a separate tool like ChatGPT when they need to share larger amounts of code or have longer conversations. This approach lets you keep sensitive code off Cursor's servers while still getting help from AI.

The trade-off is convenience: Chat is faster because it's already open in your editor and can see your code. A separate tool requires you to copy code, switch windows, and paste it somewhere else. Choose based on what matters more to you — speed or privacy control.

Frequently Asked Questions

Does Cursor use my chat conversations to train its AI?

Cursor's privacy policy states whether your chats are used for training. Check the Cursor website directly for the current policy, as this can change. If you want to be certain your conversations aren't used for training, you may prefer to use a different tool or contact Cursor's support team to ask about their data practices.

Can I use Chat if I don't have an internet connection?

No. Chat requires a live connection to Cursor's servers. If you're offline, Chat won't work. You can still use Cursor to edit code, but you won't be able to send messages to the AI until you reconnect to the internet.

What happens if I close Chat and reopen it?

Your chat history is saved. When you reopen Chat, you'll see all your previous conversations in the sidebar under "Chat History". You can click on any old conversation to view it again, or start a new conversation by clicking the "New Chat" button.

Can I share a chat conversation with someone else?

Cursor doesn't have a built-in share feature for chats. You can copy and paste the conversation text manually, or take a screenshot. If you want to share code you discussed with the AI, copy the relevant parts from the chat window and send them separately.

Is Chat the same as Cursor's code completion feature?

No. Code completion (the suggestions that appear as you type) is different from Chat. Chat is a separate feature where you write full messages and have back-and-forth conversations. Code completion is automatic and appears inline in your editor. Both use AI, but they work differently and have different privacy implications.