what does yes or no mean in the answer to "Do I need to use a tool"```> Entering new Age

Please stand by @Rouzbeh as I search the knowledge base. We are experiencing especially high traffic right now and might take longer than usual. :wave:

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In the given extract, the "Yes" or "No" answer to "Do I need to use a tool?" is part of the thought process of an agent within the LangChain framework. It indicates whether the agent needs to use a specific tool (such as LlamaIndex) to answer the user's query or not.

In this case, the agent determined that it does not need to use any tools to answer the simple "hello" query. The agent can directly respond to the user without retrieving any information from external sources or using any additional tools.

The extract is from the Building a Chatbot Tutorial () in the LlamaIndex documentation.
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@kapa.ai If the answer is no, then does that mean it is not going to use the index? If it's not using the index, then what it will use to answer the question?

Let me check the knowledge base for you. One moment! :books:

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Yes, if the answer is "No" to "Do I need to use a tool?", it means the agent is not going to use the index (such as LlamaIndex) to answer the question. In this case, the agent can directly respond to the user without retrieving any information from external sources or using any additional tools.

For example, in the Building a Chatbot Tutorial (), when the user input is a simple "hello" query, the agent does not use any tools, including LlamaIndex, and directly responds to the user:





In such cases, the agent might rely on its built-in language model or other pre-defined responses to generate an appropriate answer without the need for external tools or data sources.
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@kapa.ai but i created a chatbot based on apple's 10-k report and ask it about apple's free cash flow in 2020: Here is the agents thought process. As you can see the agent comes to the conclusion that it doesn't have to use the tool but it still was able to answer my question. How come?

Entering new AgentExecutor chain...

Thought: Do I need to use a tool? No
AI: According to Apple's 2020 10-K filing, their free cash flow for the fiscal year 2020 was $73.4 billion.

Let me check the knowledge base for you. One moment! :books:

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Hmm, I don't know enough to give you a confident answer yet. The provided extract does not show the complete process of how the agent was able to answer the question without using a tool. It's possible that the agent has access to some pre-loaded information or has been trained on specific data.

For more information on building chatbots with LlamaIndex, you can refer to the Building a Chatbot Tutorial () in the LlamaIndex documentation.
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Note: you can ask me a follow up question by @ mentioning me again :speech_balloon:
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The LLM likely figured it was confident it already had that knowledge in it's "internal" knowledge

Whether or not it chooses to use a tool is mostly controlled by the tool description

It could have been trained on that 10-K filling, so it felt like it didn't need to find the answer 😅

good tip - thanks