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Overview

Custom actions can run on both the server, or on the client. It would be beneficial to run a custom action client-side if the chatbot owner wants more flexibility with the action code, or wants to send an API request on behalf of the user, from the client side.

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How to Set Up Client-Side Custom Actions

  1. Embed the Chatbot using the new Script:
To ensure that you can register client-side custom actions, you need to embed the Chatbase script correctly. Follow these steps to get the embed code:
  • Visit the Chatbase Dashboard.
  • Navigate to Connect > Embed.
  • Copy the embed code and add it to your application.
Note: If you don’t need to verify the identity of logged-in users, you can skip the first script in the embed code and only use the chatbot embed script.
Here’s an example of the embed code you’ll find on the dashboard: Chatbase Embed Code Example
  1. Create the Client-Side Custom Action:
To create a client-side custom action:
  • Visit the Chatbase Dashboard
  • Navigate to Create custom action
  • Fill in the required fields, while choosing the type of the action to be client-side.
  1. Use the SDK registerTools method: Load the Chatbase script and call the registerTools method with all the actions and include all the logic that will run when each action is called. The action names must match that written in the custom action page.

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Method Parameters

Each custom action method receives two parameters:
  1. args: Contains all the arguments defined in your custom action configuration
  2. user: Contains the authenticated user information if identity verification is properly configured
window.chatbase.registerTools({
  get_weather: async (args, user) => {
    // args contains parameters defined in your custom action
    // user contains authenticated user data if identity verification is set up
    try {
      const response = await fetch(
        `https://wttr.in/${args.location}?format=j1`
      );

      if (!response.ok) {
        throw new Error("Failed to fetch weather data.");
      }

      const data = await response.json();

      return { data, status: "success" };
    } catch (error) {
      // Return only the error message without any data
      return { status: "error", message: error.message };
    }
  },
});

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Response Format

Custom actions should return responses in the following format:

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Success Response

When the action is successful, return both the data and status: 
//data should be either JSON or string

// Example with JSON data
{
  data: {
    temperature: 72,
    condition: "sunny",
    humidity: 45
  },
  status: "success"
}

// Example with string data
{
  data: "The weather in New York is currently 72°F and sunny",
  status: "success"
}

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Error Response

When an error occurs, return only the status and error message: 
{
  status: "error",
  error: "Error message here"
}

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Important Notes

Multiple Registrations: Calling registerTools multiple times will override previous actions. Make sure to provide all desired actions in a single registerTools call. Environment Limitations: Client-side custom actions will not work in the Chatbase Playground or Compare features, as these environments don’t support client-side code execution.