# QA: Reasoning (Default) — LangGraph (Python)

> Stub — authored for column completeness. This demo verifies the
> built-in `CopilotChatReasoningMessage` renders without a custom slot
> and does not warrant a full manual checklist.

## Prerequisites

- Demo is deployed and accessible
- Agent backend is healthy

## Test Steps

- [ ] Navigate to /demos/reasoning-default
- [ ] Send any prompt that elicits a reasoning response and verify the built-in `CopilotChatReasoningMessage` collapsible card renders the reasoning tokens
- [ ] Verify no custom reasoning slot is wired (default styling only — no `ReasoningBlock` or bespoke container)

## Expected Results

- Page loads without errors
- Reasoning renders via CopilotKit's default `CopilotChatReasoningMessage` component with zero frontend configuration