​ To learn more, see the sources I considered: [[1] Conversation Node](https://docs.retellai.com/build/conversation-flow/conversation-node) [[2] Discord message from @colinfortuner on 2024-04-16](https://discord.com/channels/1186424376300679209/1186462578310910112/1229936804761833552) [[3] MCP tool call returns correctly, but chat reply ignores it (hallucinated response)](https://discord.com/channels/1186424376300679209/1452647822657720501) [[4] Address Metric Issues](https://docs.retellai.com/ai-qa/address-metric-issues) ​

### Answer To prevent interruptions during tool calls that cause hallucinations, enable Block Interruptions on your conversation node [(1) ]() . When enabled, the agent will not be interrupted by the user when speaking . Additionally, based on community experience, if you're in the middle of a tool call and the user interrupts, you should complete the function call and not interrupt the agent [(2) ]() . You can provide an intermediate wait message in that case . For your specific flow (conversation node → function node with success/fail transitions → conversation node) , the hallucination issue occurs because the agent lacks proper context when interrupted mid-function-call. The recommended approach is: 1. Enable Block Interruptions on the conversation node before the function call [(1) ]() 2. Ensure your function node completes its execution before allowing transitions [(2) ]() 3. If hallucinations persist after function calls, check that your transition conditions are clear and that the agent is properly grounded to the tool result [(3) ]() If the agent continues hallucinating after successful function execution, verify that your conversation nodes following the function call have clear instructions that reference the function's output [(4) ]() .

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.

### Answer Based on the current documentation, Block Interruptions is still listed as a node setting for Conversation Nodes [(1) ]() . According to the documentation, when enabled, "the agent will not be interrupted by user when speaking" . However, I don't have information in the available sources about recent changes to this feature or API parameter deprecation. For issues with the Block Interruptions setting: 1. Check the Node Settings section of your Conversation Node in the dashboard 2. Verify you're looking at a Conversation Node specifically, as this setting applies to that node type If the setting has been removed or the API parameter no longer works, I recommend: - Visit [Documentation]() - Visit [Hire certified Retell partner]() Would you like a general answer based on my knowledge instead?

​ To learn more, see the sources I considered: [[1] Conversation Node](https://docs.retellai.com/build/conversation-flow/conversation-node) ​

Feel free to tag @AI Evy with additional questions. I also appreciate feedback, it helps me improve.