FJ
12/11/2025, 3:27 PMVapi Support Bot
12/11/2025, 3:28 PMjson
{
"chunkSize": 500,
"splitDelimiters": ".?\n"
}
This helps the query tool retrieve relevant data more effectively. For more details, see the [Trieve integration guide](https://docs.vapi.ai/knowledge-base/integrating-with-trieve).
Source:
- [Integrating with Trieve](https://docs.vapi.ai/knowledge-base/integrating-with-trieve)FJ
12/11/2025, 3:55 PMVapi Support Bot
12/11/2025, 3:55 PMFJ
12/11/2025, 4:05 PMFJ
12/11/2025, 4:06 PMVapi Support Bot
12/11/2025, 4:08 PMtext
When users ask about our products or services, use the knowledge base to provide accurate details.
This ensures the assistant knows when to reference the knowledge base for responses. For more details, see the [Vapi knowledge base guide](https://docs.vapi.ai/knowledge-base).
Source:
- [Vapi Knowledge Base Documentation](https://docs.vapi.ai/knowledge-base)FJ
12/11/2025, 4:17 PMChiranjeet Mishra
12/15/2025, 5:07 PMObserve > Call Logs to see if there are any additional errors or details when the query tool is called.
- Use the tool's test feature in the dashboard to simulate sample queries and troubleshoot execution.
4. **Check Assistant Instructions**:
- Make sure your assistant's system prompt uses the exact query tool name and provides clear instructions for calling it.
Since knowledge bases don't always work smoothly with chat functionality, especially with text files, you might want to consider setting up a workaround as outlined in the [Vapi Knowledge Base Documentation](https://docs.vapi.ai/knowledge-base) and possibly using external integrations if the issue persists.
If the error persists across these checks, it might be related to known limitations in using knowledge bases with chat interfaces, as discussed in previous threads. In such cases, monitoring for updates from Vapi regarding tool updates or API changes is advisable.