# Getting Started—Using "Query Builder" ## Contact Query Metadata Configuration You can use the "Query Builder" in MaiAgent service to create QueryMetadata graphically. Here's an example of creating Contact Query Metadata: ### Step 1: Access the Contacts Area in MaiAgent Backend Service

### Step 2: Configure Settings for the Desired Contact 1. Find the contact you want to configure and click edit

2. The following screen will appear after clicking

Click directly on Query Builder to enter the graphical interface ### Step 3: Select Desired Permissions 1. Select the knowledge bases you want to grant access to, and optionally select specific documents within those knowledge bases

2. If you want to grant access to documents with specific tags, click "Show Tag Filter" to open the tag settings area

You can choose the conditions you want to create, selecting either `"OR"` (matches any condition) or `"AND"` (matches all conditions) as the access criteria for documents in the enabled knowledge bases ## Message Settings You can also use the right-side menu shown below to select the knowledge permissions to grant:

Internal Chat: Select Available Knowledge Permissions

You can also use "Show Tag Filter" to set tag filtering conditions {% hint style="info" %} You can adjust permissions on the right before sending each different message to manage knowledge access {% endhint %}

Currently able to reference three files: CV, SOP, and Survey After unchecking CV in the next message and sending again:

The Agent can no longer use the CV file, and the reference library no longer shows CV references:

Reference Library Change: After Removing CV

Permissions can be adjusted before sending each message, affecting what content can be referenced in that round of responses.