Cheez_One
January 20, 2026, 12:55pm
1
Cursor IDE
Sub agent cannot run.
Latest version in nightly. Then cannot call Task even switch to other version.
MacOS
Version: 2.4.3 (Universal)
Yes - Cursor is unusable
Same here
Version: 2.4.3 (Universal)
Model tought extract
The Task tool is not available. This means the delegation mechanism via subagents isn’t available in this context. Let me explain this to the user.
Looking at the system information, I see that I have access to various tools like Shell, Grep, Glob, LS, Read, Delete, StrReplace, Write, EditNotebook, TodoWrite, ReadLints, SemanticSearch, WebSearch, WebFetch, GenerateImage, AskQuestion, CallMcpTool, ListMcpResources, FetchMcpResource, and SwitchMode.
There is no “Task” tool available. The subagent delegation context mentioned in the system prompt is guidance for how to delegate, but the actual Task tool doesn’t exist in this environment.
deanrie
January 20, 2026, 3:45pm
4
Hey, thanks for the report. This looks like a known issue, and the team is already working on a fix.
Just to be safe, can you share the Request ID from the chat where the Task tool isn’t showing up? (Click the three dots in the top-right of the chat, then select Copy Request ID.)
request id: 4fda1350-5e15-4760-b3af-8ffef87237f8
Task tool not available in the session
Version: 2.4.3 (Universal)
1 Like
deanrie
January 21, 2026, 12:55pm
9
@Cheez_One @Guillaume_Costanza - can you help with diagnostics? I need a Request ID with Privacy Mode turned off:
Open Cursor Settings (Ctrl+Shift+J or Cmd+Shift+J)
Find “Privacy Mode”
Turn it off temporarily
Try running the agent with sub-agent again (to reproduce the error)
Copy the Request ID (three dots in chat > Copy Request ID)
Send it here
After that you can turn Privacy Mode back on right away.
same f06a74ee-375a-4f0f-bc2a-6e0cd539853e
Cheez_One
February 4, 2026, 3:53pm
13
Can not resolved. ad2be80e-0f9e-484d-8e70-3d984c720953
deanrie
February 5, 2026, 4:09am
16
Hey, quick update.
Composer 1 doesn’t support sub-agents yet. If you’re using Auto mode and it picks Composer 1 under the hood, the Task tool just won’t be available.
Workaround: pick a specific model instead of Auto (for example, Claude Sonnet 4.5 or GPT-5.2). Sub-agents should work fine with other models.
1 Like
when will subagents be supported on a cost free model?
Eddy
February 9, 2026, 1:58pm
18
Arent Free models wiped out already for quite a while? ^^
Eddy
February 9, 2026, 4:28pm
20
maybe i missed the memo but that one wasnt free for a long time anymore either?
We don’t get credits consumed for using composer-1 in my enterprise.
1 Like
Colin
February 10, 2026, 3:57pm
22
Hey all!
Composer 1.5 has been released, supporting subagents. That means that when using Auto, you should always have access to subagents.
2 Likes
@Colin I tried using composer-1.5. It doesn’t spawn subagents for me. Am I missing something?
1 Like
Colin
February 11, 2026, 7:44am
24
You’re gonna have to share more details than that! How did you try to spawn them?
@Colin I have a command that spawns subagents on demand from the main agent. Please tell me what info I can share that will help you help me.
Task tool is unavailable for me even with composer 1.5.
Version: 2.4.31 (Universal)
Eddy
February 11, 2026, 5:01pm
26
Maybe share the REquest ID so they can look into it directly (Privacy mode needs to be disabled for that)
Request Id: a877e64e-9ab1-4827-a3aa-060691c26e72
My enterprise is on privacy mode(legacy). I dont think requestId can be traced. I cant disable this mode as I’m not admin. Nor can I request for this to be disabled.
