How to enable Online Content Search during Conversations

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1. Is this request related to a challenge you're experiencing? Tell me about your story.

Hello all. I wonder whether it is possible for my chatbot to look at internet before answering my questions, and I found in the official dify blog it is mentioned:

Through Explore, users can access Chat and achieve various functionalities, such as:
Prompting AI to answer time and computation-related questions
Analyzing web page content as context for the conversation
Expanding on AI's reasoning process

But how do I do that in my custom chatbot? Is it through a custom tool in flow of studio? Thanks.

2. Additional context or comments

https://dify.ai/blog/ai-online-search-enhances-dataset-hit-rate