AskQuestion tool does not work using composer-1.5 but does work with other models

[cveep (Chris)]

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I noticed that trying to request the Agent use the AskQuestion tool to interactively ask the user a question only works in Plan mode with composer-1.5.

If I try, when using composer-1.5 to request the Agent “Use the AskQuestion tool to ask me a random multi-select question.” in Plan mode, it works. However if you try this in Agent mode, it will state “I don’t have access to an AskQuestion tool in this workspace, so here’s a multi-select question directly” and then ask you a question in text.

HOWEVER, if I switch the model to Haiku 4.5 (for instance) and prompt the Agent to “Use the AskQuestion tool to ask me a random multi-select question.”, the AskQuestion interface does pop up to interactively display the question in the chat interface.

Why does the composer-1.5 model have trouble with this request?

Steps to Reproduce

Using Agent chat in Agent mode with composer-1.5 as the selected model ask the agent to “Use the AskQuestion tool to ask me a random multi-select question.”

It will fail and fall back to text.

Using Agent chat in Agent mode with haiku-4.5 as the selected model ask the agent to “Use the AskQuestion tool to ask me a random multi-select question.”

It will succeed and display the question interactively in the chat, as expected.

Expected Behavior

The AskQuestion interactive interface asks you a random question.

Screenshots / Screen Recordings

Operating System

Windows 10/11
MacOS

Version Information

Version: 2.5.17 (Universal)
VSCode Version: 1.105.1
Commit: 7b98dcb824ea96c9c62362a5e80dbf0d1aae4770
Date: 2026-02-17T05:58:33.110Z
Build Type: Stable
Release Track: Default
Electron: 39.3.0
Chromium: 142.0.7444.265
Node.js: 22.21.1
V8: 14.2.231.22-electron.0
OS: Darwin arm64 25.2.0

For AI issues: which model did you use?

composer-1.5, haiku-4.5

Does this stop you from using Cursor

No - Cursor works, but with this issue

[deanrie]

Hey, thanks for the report.

The AskQuestion tool is mainly intended for Plan mode, so it may be expected that it’s missing from the composer-1.5 toolset in Agent mode. Interestingly, Haiku 4.5 seems to “find” it in Agent mode, likely because third-party models handle tool availability differently than our internal model.

That said, I see you also created a feature request to make AskQuestion available in all modes. That’s the right place for it: Allow AskQuestion tool calls in Agent Mode (or any mode): Allow AskQuestion tool calls in Agent Mode (or any mode).

I’ll flag the model mismatch for the team. Could you please grab the Request ID from one of the failed attempts with composer-1.5? You can copy it from the chat context menu in the top right corner using Copy Request ID. This will help the team investigate model-specific behavior.

For now, as a workaround, Plan mode with composer-1.5 should work, or you can switch to another model in Agent mode.