I have the request id: 894acd9b-2793-4ee3-908b-a417c65c9922
I’m using gemini-2.5-pro (max). I also have two MCP implementations that are critical to what we’re doing. They seem to work fine.
In this particular conversation I am deep into a refactor. It has done a lot of changes in that time. No problems. Then, suddenly, it’s stuck. The error says I need to either disable the MCP servers, or switch models. I tried talking to the model in a different window and it seems fine. In the broken window, trying the request again continues to give the same message.
While I understand what the error says factually, the complete lack of detail is rather frustrating. What’s actually wrong? Is it making a particular call to the agent that is failing? If so, how? Can it not just deal with a failed MCP call? I assume it can, so why does Cursor simply stop with that error? I can’t simply continue working without the MCP tools, and there haven’t been any significant issues with them previously, using several different agents.
Is there a reason switching models would fix this? Deep in the middle of a refactor, there is no way I’m just going to “switch models”. They’re all rather different, and if I happen to select a model and it causes a context compression (or whatever), it’ll be somewhat like working with an entirely different “person” in the middle of a task.
The error is frustrating and vague, and one of the reasons I started using other agent tools. I can’t find the actual issue in logs. This kind of error needs a bit more “why” than simply “what”. I can’t imagine why disabling the MCP servers would help, nor why switching models would solve anything. Doing either would certainly make continued progress rather difficult.
“Explain how to reproduce the bug”
I couldn’t begin to imagine how somebody would reproduce this bug.
“Attach screenshots or recordings (e.g., .jpg, .png, .mp4).”
Attached. I assume that clears up nothing (which is primarily why I’m submitting this report).
“Tell us your operating system and your Cursor version (e.g., Windows, 0.x.x).”
Mac 15.1, Cursor 0.48.8
“Tell us if the issue stops you from using Cursor.”
Yes, very much so. I may be able to restart and/or try to begin from a new conversation, but OMG, the loss of context is brutal with these kinds of edits. I had abandoned Cursor recently, and only came back because, as it turns out, other agents are also prone to blowing up arbitrarily. The others, however, usually give some more useful data.
Sorry for the expression of frustration, but you really need to give more detail when things go wrong. Most of the frustration is the message, and lack of detail. Should I also reboot the router? Disconnect the external monitor? Why do I need to disable the MCP server? If there’s an error, is there not a log of the error? If there’s a model error, is there not an error message? Which one should I do? Both? Why?!
PS: I uploaded an image, and just before I did I thought “I should copy this text in case it disappears”, and guess what happened when I uploaded…
