copilotkit__copilotkit/showcase/packages/langgraph-python/qa/headless-complete.md

QA: Fully Headless UI — LangGraph (Python)

Prerequisites

• Demo is deployed and accessible
• Agent backend is healthy (check /api/health)

Test Steps

1. Basic Functionality

• Navigate to the demo page
• Verify the custom headless chat interface loads
• Send a basic message
• Verify the agent responds

2. Resolver-backed Tool Rendering

• Ask for the weather in a specific city
• Verify a weather loading state appears while the tool is running
• Verify the final weather card appears inside the custom headless message list
• Verify the page source/code tab uses useToolRenderingResolver

3. Error Handling

• Submit is disabled for an empty message
• Verify no console errors during normal usage

Expected Results

• Headless chat loads within 3 seconds
• Agent responds within 10 seconds
• Weather tool UI renders through the resolver path
• No built-in CopilotChat component is used for the chat shell