Knowledge Base

Last updated: May 13, 2026

Here you will learn how to use the knowledge base optimally to provide your AI with additional information.

Knowledge Base for the AI Phone Assistant

With this feature, you can provide your AI phone assistant with targeted knowledge in the form of PDF documents. This allows the AI to access company-specific information, current reports, or other relevant content during incoming calls and use it intelligently in the conversation. This makes your assistant even more helpful and personalized.

Knowledge Base Requirements

  • Only PDF files are allowed

  • Maximum 20 MB per file

  • File must contain real text (no pure images)

Here’s how:

  1. Open the app.fonio.ai and select the "Knowledge Base" tab on the left

  2. Upload PDF

  3. Name the file

  4. Open the AI phone assistant

  5. In the section "Answer Questions" check the relevant PDFs

  6. Save changes

Bonus Tip

The prompt for the AI phone assistant should specify exactly when the AI should access which document.

Examples:

  • "If a caller wants to know something about the post, use the document 'Post AG Report 2024.'"

  • "If it’s about BMW, use 'BMW Group Report 2024.'"

Knowledge Base Priority: Ensure your prompt instructs the AI to prioritize information from the knowledge base over general internet knowledge. For example, include: "Always use information from the uploaded knowledge base documents when answering questions covered in those documents, rather than general information from the internet."

Important: To ensure the AI can actually access the documents in the knowledge base, this must be selected in the assistant’s behavior settings.

Testing the AI Phone Assistant

Next, you can test the connection of your AI phone assistant with the knowledge base as usual in the browser – and talk directly with your PDF.

Adjusting the Knowledge Base and Removing PDFs

Under the "Knowledge Base" tab, you can add, rename, or remove content for your AI phone assistant at any time.