Use AI for parameters

When configuring tools¹ connected to the Tools Agent, many parameters can be filled in by the AI model itself. The AI model will use the context from the task and information from other connected tools to fill in the appropriate details.

There are two ways to do this, and you can switch between them.

Let the model fill in the parameter

Each appropriate parameter field in the tool's editing dialog has an extra button at the end:

On activating this button, the AI Agent² will fill in the expression for you, with no need for any further user input. The field itself is filled in with a message indicating that the parameter has been defined automatically by the model.

If you want to define the parameter yourself, click on the 'X' in this box to revert to user-defined values. Note that the 'expression' field will now contain the expression generated by this feature, though you can now edit it further to add extra details as described in the following section.

Use the $fromAI() function

The $fromAI() function uses AI to dynamically fill in parameters for tools connected to the Tools AI agent.

To use the $fromAI() function, call it with the required key parameter:

{{ $fromAI('email') }}

The key parameter and other arguments to the $fromAI() function aren't references to existing values. Instead, think of these arguments as hints that the AI model will use to populate the right data.

For instance, if you choose a key called email, the AI Model will look for an email address in its context, other tools, and input data. In chat workflows, it may ask the user for an email address if it can't find one elsewhere. You can optionally pass other parameters like description to give extra context to the AI model.

Parameters

The $fromAI() function accepts the following parameters:

Examples

As an example, you could use the following $fromAI() expression to dynamically populate a field with a name:

$fromAI("name", "The commenter's name", "string", "Jane Doe")

If you don't need the optional parameters, you could simplify this as:

$fromAI("name")

To dynamically populate the number of items you have in stock, you could use a $fromAI() expression like this:

$fromAI("numItemsInStock", "Number of items in stock", "number", 5)

If you only want to fill in parts of a field with a dynamic value from the model, you can use it in a normal expression as well. For example, if you want the model to fill out the subject parameter for an e-mail, but always pre-fix the generated value with the string 'Generated by AI:', you could use the following expression:

Generated by AI: {{ $fromAI("subject") }}

Templates

You can see the $fromAI() function in action in the following templates³:

• Angie, Personal AI Assistant with Telegram Voice and Text
• Automate Customer Support Issue Resolution using AI Text Classifier
• Scale Deal Flow with a Pitch Deck AI Vision, Chatbot and QDrant Vector Store