Custom Function

The Custom Function node lets you execute custom JavaScript code within your Agentflow. It securely runs your logic in a Node.js sandbox, giving you full flexibility to transform data, call tools, and apply complex logic at any point in the flow.

Custom Function node on the V2 Agentflow Canvas

Inputs

• Input Variables (JSON): Map values from upstream nodes as input variables. They can be referenced inside your JavaScript code with a $ prefix (e.g. if you map an input named authData, use $authData in your function).
• Function Name: Optional string to name your function for easier visual identification on the canvas.
• Additional Tools (List): Connect tools from your flow that can be invoked dynamically inside your JavaScript code via:

  $tools.{tool_name}.invoke(args)
  

• Javascript Function (Code): Your custom JavaScript payload. This code executes in a sandboxed environment with access to your input variables, flow context, and connected tools.

Outputs

• Output: Returns a string, number, boolean, json, or array to the next connected node.
• Ending Node: Use this output anchor to terminate the flow at this node.