# redteam-conversation-ended-signal (Redteam Conversation Ended Signal) You can run this example with: ```bash npx promptfoo@latest init --example redteam-conversation-ended-signal ``` This example demonstrates how a target can stop a multi-turn redteam attack by returning: - `conversationEnded: true` - `conversationEndReason: "thread_closed"` The mock target provider intentionally omits `output` when the thread is closed, which tests promptfoo's new graceful-stop behavior. ## Prerequisites Set an API key for attack generation and grading: ```bash export OPENAI_API_KEY=your-api-key ``` ## Run ```bash promptfoo redteam run --no-cache -o output.json ``` Optional: inspect the result JSON for the stop reason: ```bash jq '.. | .stopReason? // empty' output.json ``` You should see `Target ended conversation` for the multi-turn strategy metadata.