Agent chat does not work at all

[Daeliel]

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

Typing in agent chat (CTRL + L) ends up in three dots pulsating for about 2 seconds, and there is no output. i am simply returned to chat dialog. No error. I’ve rebooted, as well as restarted cursor to no avail. My setup is a simple local folder python app that I’m editing. Started happening out of a blue about an hour ago.

Steps to Reproduce

Start to type in agent chat. Enter any prompt. Dots appear as if it’s processing. then it returns you to the input box.

Expected Behavior

User should get AI’s response.

Operating System

Windows 10/11

Current Cursor Version (Menu → About Cursor → Copy)

Version: 1.7.33 (user setup)
VSCode Version: 1.99.3
Commit: a84f941711ad680a635c8a3456002833186c4840
Date: 2025-10-03T03:28:06.574Z
Electron: 34.5.8
Chromium: 132.0.6834.210
Node.js: 20.19.1
V8: 13.2.152.41-electron.0
OS: Windows_NT x64 10.0.19045

For AI issues: which model did you use?

Claude 4.5 sonnet

Does this stop you from using Cursor

Yes - Cursor is unusable

[sanjeed5]

Thanks for reporting this issue. Let’s diagnose what’s happening:

Please check the following:

1. Developer Console - Open Developer Tools (Help > Toggle Developer Tools), go to the Console tab, and try sending a chat message. Share any red error messages you see.

2. Network - Cursor Settings → Network → Run Diagnostics

3. Network environment - Are you using a VPN, proxy, or corporate firewall that may have changed recently?

Let me know what you find!

[Daeliel]

Hey! Good news! Got it figured out. I had a VERY large log open and even though I thought I removed it from context, it was being added to cursor, sent to the agent and crashed it. Removing the large file from context solved the issue!