Widget customization

Widgets enable instant integration of ElevenAgents into any website. You can either customize your widget through the UI or through our type-safe ElevenAgents SDKs for complete control over styling and behavior. The SDK overrides take priority over UI customization. Our widget is multimodal and able to process both text and audio.

You can also retrieve an agent’s widget configuration and shareable link from Claude or another MCP client through the hosted MCP server.

Modality configuration

The widget supports flexible input modes to match your use case. Configure these options in the dashboard under Channels → Widget → Interface.

Multimodality is fully supported in our client SDKs, see more here.

Available modes:

Voice only (default): Users interact through speech only.
Voice + text: Users can switch between voice and text input during conversations.
Chat Mode: Conversations start in chat (text-only) mode without voice capabilities when initiated with a text message.

For more information on using chat (text-only) mode via our SDKs, see our chat mode guide.

The widget defaults to voice-only mode. Enable the text input toggle to allow multimodal interactions, or enable text-only mode support for purely text-based conversations when initiated via text.

Widgets currently require public agents with authentication disabled. Ensure this is disabled in the Advanced tab of your agent settings.

Add this code snippet to your website’s <body> section. Place it in your main index.html file for site-wide availability:

Widget embed code

<elevenlabs-convai agent-id="<replace-with-agent_7101k5zvyjhmfg983brhmhkd98n6>"></elevenlabs-convai>
<script
  src="https://unpkg.com/@elevenlabs/convai-widget-embed"
  async
  type="text/javascript"
></script>

For enhanced security, define allowed domains in your agent’s Allowlist (located in the Security tab). This restricts access to specified hosts only.

This basic embed code will display the widget with the default configuration defined in the agent’s dashboard. The widget supports various HTML attributes for further customization:

Core configuration

<elevenlabs-convai
  agent-id="agent_id"              // Required: Your agent ID
  signed-url="signed_url"          // Alternative to agent-id
  server-location="us"             // Optional: "us" or default
  variant="expanded"               // Optional: Widget display mode
  dismissible="true"               // Optional: Allow the user to minimize the widget
></elevenlabs-convai>

Visual customization

<elevenlabs-convai
  avatar-image-url="https://..." // Optional: Custom avatar image
  avatar-orb-color-1="#6DB035" // Optional: Orb gradient color 1
  avatar-orb-color-2="#F5CABB" // Optional: Orb gradient color 2
></elevenlabs-convai>

Text customization

<elevenlabs-convai
  action-text="Need assistance?" // Optional: CTA button text
  start-call-text="Begin conversation" // Optional: Start call button
  end-call-text="End call" // Optional: End call button
  expand-text="Open chat" // Optional: Expand widget text
  listening-text="Listening..." // Optional: Listening state
  speaking-text="Assistant speaking" // Optional: Speaking state
></elevenlabs-convai>

Markdown rendering

The widget renders markdown in agent responses. Links display as plain text by default to prevent phishing.

<elevenlabs-convai
  markdown-link-allowed-hosts="example.com"  // Domains where links are clickable (use "*" for all)
  markdown-link-include-www="true"           // Also allow www variants (default: true)
  markdown-link-allow-http="true"            // Allow http:// links (default: true)
  syntax-highlight-theme="dark"              // Code block theme: "dark", "light", or "auto"
></elevenlabs-convai>

Runtime configuration

Two more html attributes can be used to customize the agent’s behavior at runtime. These two features can be used together, separately, or not at all

Dynamic variables

Dynamic variables allow you to inject runtime values into your agent’s messages, system prompts, and tools.

<elevenlabs-convai
  agent-id="agent_7101k5zvyjhmfg983brhmhkd98n6"
  dynamic-variables='{"user_name": "John", "account_type": "premium"}'
></elevenlabs-convai>

All dynamic variables that the agent requires must be passed in the widget.

See more in our dynamic variables guide.

Overrides

Overrides enable complete customization of your agent’s behavior at runtime:

<elevenlabs-convai
  agent-id="agent_7101k5zvyjhmfg983brhmhkd98n6"
  override-language="es"
  override-prompt="Custom system prompt for this user"
  override-first-message="Hi! How can I help you today?"
  override-voice-id="axXgspJ2msm3clMCkdW3"
></elevenlabs-convai>

Overrides can be enabled for specific fields, and are entirely optional.

See more in our overrides guide.

Visual customization

Customize the widget’s appearance, text content, language selection, and more.

Update via the dashboard

Update via the CLI

Update via the API

Open your agent in the dashboard and navigate to the Widget tab to customize appearance, avatar, text, terms, language support, and more.

Appearance

Feedback

Avatar

Display text

Terms

Language

Muting

Shareable page

Customize the widget colors and shapes to match your brand identity.

Rich content

Rich content lets the agent reply with interactive components alongside its messages. Configure it in the dashboard under Channels → Widget → Rich content.

Rich content is shown in text conversations, and in voice conversations when Realtime transcript of the conversation is enabled under Interface. It is only available in the embedded widget.

Quick replies

Carousel

Quick replies are buttons users can tap instead of typing. When a user taps one, its label is sent as the user’s next message.

Suggested by the agent

The agent suggests up to three replies during the conversation, for example to confirm a choice or offer next steps.

First message replies

Add up to three replies under First message replies to show them with the agent’s first message, so users can start the conversation with a tap. Drag them to change the order.

These replies are fixed: they appear with every first message, and the agent does not choose them. They are translated along with your other language presets.

How the agent uses rich content

Apart from first message replies, the agent decides on each turn whether to show quick replies or a carousel. A reply that does not need a component stays plain text. To shape when and how they appear, describe it in the agent’s system prompt.

Quick replies and carousel are on by default for new agents. For agents created before rich content was available, turn them on in the widget settings.

Advanced implementation

For more advanced customization, you should use the type-safe ElevenAgents SDKs with a Next.js, React, or Python application.

Client Tools

Client tools allow you to extend the functionality of the widget by adding event listeners. This enables the widget to perform actions such as:

Redirecting the user to a specific page
Sending an email to your support team
Redirecting the user to an external URL

To see examples of these tools in action, start a call with the agent in the bottom right corner of this page. The source code is available on GitHub for reference.

Creating a Client Tool

To create your first client tool, follow the client tools guide.

Example: Creating the redirectToExternalURL Tool

Example Implementation

Below is an example of how to handle the redirectToExternalURL tool triggered by the widget in your JavaScript code:

index.js

document.addEventListener("DOMContentLoaded", () => {
  const widget = document.querySelector("elevenlabs-convai");
  if (widget) {
    // Listen for the widget's "call" event to trigger client-side tools
    widget.addEventListener("elevenlabs-convai:call", (event) => {
      event.detail.config.clientTools = {
        // Note: To use this example, the client tool called "redirectToExternalURL" (case-sensitive) must have been created with the configuration defined above.
        redirectToExternalURL: ({ url }) => {
          window.open(url, "_blank", "noopener,noreferrer");
        },
      };
    });
  }
});

Explore our type-safe SDKs for React, Next.js, and Python implementations.

Modality configuration

Embedding the widget

Widget attributes

Core configuration

Visual customization

Text customization

Markdown rendering

Runtime configuration

Dynamic variables

Overrides

Visual customization

Update via the dashboard

Update via the CLI

Update via the API

Appearance

Feedback

Avatar

Display text

Terms

Language

Muting

Shareable page

Rich content

Quick replies

Carousel

How the agent uses rich content

Advanced implementation

Client Tools

Creating a Client Tool

Example Implementation