m having an issue with Vapi. When using the query tool, it only accesses data from one query tool, even though I’ve added two tools. Even when I explicitly instruct it to use the second tool, it still doesn’t use it. call id 019bde31-8652-7441-847f-ffd9f0186289 https://cdn.discordapp.com/attachments/1463355329138921616/1463355329377992924/Screenshot_2026-01-21_073959.png?ex=6980b09a&is=697f5f1a&hm=0c1e604d2f091f5b37fb981c1a2681ff9b13af01b145fb8b0d933eedd0fc8681& https://cdn.discordapp.com/attachments/1463355329138921616/1463355330296807455/Screenshot_2026-01-21_073940.png?ex=6980b09a&is=697f5f1a&hm=dd8b4aa75ddc17d8c01c621410e09c8f83b0322c72bbc41b4848ab0dc49ea3e0&

Actionable Fix: Update your system prompt to explicitly instruct the assistant when to use each tool by its exact name. For example:

json
{
  "role": "system",
  "content": "You are a helpful sales agent. When users ask about product details, use the 'know_1' tool. For pricing or billing questions, use the 'know_2' tool. Always call the appropriate tool before answering."
}

Be sure the tool names in the prompt exactly match those in your configuration. For more, see the [official guidance](https://docs.vapi.ai/knowledge-base/using-query-tool). Source: - [Using the Query Tool for Knowledge Bases](https://docs.vapi.ai/knowledge-base/using-query-tool)

it is not working if i am removing second then first is started working and if i remove first then second is started working but both are not working as expectead

Could you please provide a call id where both query tools are attached? In the previous call id you sent, there was only one query tool

know_1

attached.

I am having the same issue. I have an agent with multiple tools, in the prompt I use the unique name and how to use each of them, but I only see the first one being used. If I change the first one for another, then it starts using that one. Any work around? Is this a bug or am I doing something wrong here?

please provide a call id and we will take a look at the config