topic Unable to access Knowledgebase in Sandbox preview in Knowledge Base Tool

Unable to access Knowledgebase in Sandbox preview

PBarik8 — Wed, 25 Feb 2026 12:02:02 GMT

I created a knowledgebase and added it to the chatflow in Sandbox.

While testing I cannot preview the knowledge to check if it is working as expected. How can I review the knowledgebase while using chatflow? Is there a work around to this?

Re: Unable to access Knowledgebase in Sandbox preview

WorkflowWiz — Wed, 25 Feb 2026 12:15:50 GMT

Hi PBarik8,

In Sandbox you won’t see a “preview” of which knowledge base article is being pulled inside the chatflow.

A couple quick ways to test it:

Use the Chatflow Preview and ask very specific questions that match your article titles/headings.
Go to the Knowledge Base search directly and try the same queries - if it doesn’t show there, it won’t show in the bot.
Make sure the article is published and the correct knowledge base is selected in the bot action.

If the test preview still feels limited, you can temporarily publish the chatflow on a test page and try it live - that usually gives clearer results.

Re: Unable to access Knowledgebase in Sandbox preview

BérangèreL — Wed, 25 Feb 2026 12:49:34 GMT

Hi @PBarik8 and Happy Wednesday! 🤗

Thank you so much for reaching out to the HubSpot Community!

Could you please try testing in a production account: Sandbox accounts can sometimes have limitations that make it tricky to test certain features.

If possible, try testing your chatflow with the knowledge base in your production account.

Alternatively, you could use a developer test account, which gives you access to a 90-day trial of enterprise features, a great way to explore all functionalities!

If you are still seeing some limitation, I'd recommend to reach out to our Support Team and sharing these details:

- Your sandbox account ID
- Steps you followed to encounter the issue
- What you expected to happen versus what actually happened
- Any error messages you noticed
- The link to this Community post

The Support team is always happy to help and should be able to provide further guidance!
Bérangère

This post was created with the assistance of AI tools