Ada’s Web Chat consists of a global adaEmbed object that you must add to your site to use any Web SDK functionality, along with corresponding settings and actions.
Set the Web Chat’s configurable options by defining an adaSettings object on your window scope.
Alternatively, you can pass settings to the adaEmbed.start method. (See Delay bot loading.)
The Web SDK requires that window.adaSettings be defined before the script loads. You must therefore either define window.adaSettings before the script, or make use of async on your web chat script.
The following are all of the available settings for Web chat.
adaReadyCallback?(params: { isRolledOut: boolean }): void;
Specifies a callback function to be called when Web Chat has finished setting up. This is especially useful when Web Chat is loaded asynchronously.
chatterTokenCallback?(chatter: string): void;
Specifies a callback for when the chatter token has been set in Chat. This is called when chat is first opened by a chatter.
cluster?: string;
Specifies the Kubernetes cluster your AI Agent runs on.
Set this only if your Agent is hosted on a non-default cluster (e.g., us2, maple, eu, att).
If the Agent is on the default us cluster, leave this unset.
For more details, see Load a bot on a non-default cluster.
conversationEndCallback?(callback: (event?: { [key]: string | object }) => void): void;
Use conversationEndCallback to specify a callback function to be called when a chatter ends the conversation. The callback will receive an event object containing conversation metadata.
crossWindowPersistence?: boolean;
When set to true, allows the chat drawer open/close state to persist across windows and page refreshes using the Window.sessionStorage API. When the browser is closed the state is forgotten. Note that the crossWindowPersistence setting only works if an Ada Glass live chat is active (that is, while a chatter is connected to an agent).
We recommend enabling this feature if your bot uses Ada Glass.
domain?: string;
Use this setting to change the subdomain. Unless directed by an Ada team member, you will not need to change this value.
greeting?: string;
Use to customize the greeting messages that new chatters see. This is useful for setting page-specific greetings across your app. The greeting should correspond to the ID of the Answer you would like to use, which you can find in the URL of the corresponding Answer in the dashboard.
Example

This setting is only applicable if you’re using a scripted bot.
handle:? string;
Can be used to specify the bot handle if one is not specified in the script data-handle attribute.
enableProgrammaticControl?: boolean;
Opt-in to the transcript-bearing programmatic surface. When set to true, your page can:
sendMessage, getMessages, getConversation, setComposerText, and setDelegate.ada:message:sent and ada:message:received events on host-page subscribers.While the flag is false (the default), those methods reject with ProgrammaticControlNotEnabled and the events are not delivered to host subscribers.
Every script that lives in your host page (analytics tags, GTM, ad pixels, session replay tools, and any third-party SaaS pixel) inherits your page’s trust and can subscribe to these events or call these methods. They will see full message bodies, including any PII your chatters type. Have your product and security teams accept that exposure risk explicitly before turning this on.
headless?: boolean;
When set to true, Chat connects to the bot in the background without rendering the default chat button or drawer. Use this when your page is rendering its own chat UI and driving the conversation through sendMessage, getMessages, getConversation, and subscribeEvent.
Headless sessions are typically paired with enableProgrammaticControl: true — without it the methods needed to drive a custom UI reject at runtime.
Methods that act on the built-in UI are not available in headless mode:
setComposerText rejects with HeadlessModeError — there is no built-in composer to write to.toggle is a no-op — there is no drawer to open or close.isOpen always returns false.Headless sessions run with no visual indicator. The chatter token is created and persisted to local storage the same way as a visible session. If your page is compromised, an attacker can run chatter activity under the visiting user’s token without any user-facing signal — host pages should treat enabling headless as a meaningful trust decision.
hideMask?: boolean;
When set to true, prevents the default mask from appearing on top of your site’s content when opened on desktop.
We recommend setting the value of hideMask to false. This allows users to navigate the page while the Ada chat window is open.
language?: string;
Set the language for your bot. This setting takes in a language code to programatically set the default bot language. For example, you could change the language to French as in the following example:
You must first turn languages on in your dashboard:
Language codes must use the ISO 639-1 language format.
Alternatively, you can use the setLanguage action, which allows you to change the language without clearing the chat history.
lazy?: boolean;
When set to true true, this will prevent the bot from loading until the adaEmbed.start(...) method is called. (Alternatively, see Delay bot loading.)
metaFields?: FlatObject;
Use metaFields to pass information about a chatter to Ada. This can be useful for tracking information about your customers, as well as personalizing their experience. For example, you may wish to track the phone_number and name for conversation attribution. (See Variables for more information)
Once set, you can access this information:
To change these values after bot setup, use the setMetaFields action.
Meta field keys should not include whitespace, emojis, special characters, or periods.
Called when the embed script has been loaded, and before it is initialized. This is useful for subscribing to events. Subscribing here ensures that subscriptions are in place before events are triggered.
parentElement?: string | HTMLElement;
Specifies where to mount the <iframe> if the default side drawer is not desired. Accepts the HTMLElement or element id of the desired parent element.
Chat will render immediately inside the parentElement provided. This means that the conversation will also get initialized. We do not recommend initializing Embed2 with the parentElement setting automatically on every page, since it could lead to low engagement rates.
privateMode?: boolean;
Puts web chat into private mode when set to true. In private mode, web chat forgets conversation history on refresh. This is effectively the same as setting customer persistence or chatter persistence to Forget After Reload.
rolloutOverride?: number;
Use this setting to override the rollout value set in the dashboard. This can be useful if you need page-specific rollout values. Accepts any number between 0 and 1.
sensitiveMetaFields?: FlatObject;
Like metaFields, you can use sensitiveMetaFields to pass information about a chatter to Ada. With sensitiveMetaFields, however, values are:
If the sensitive data is sent as part of a bot response, it is not redacted the first time it appears (to allow the chatter to verify it, for example), but the data is redacted when fetching the logs of a recent conversation.
To change these values after bot setup, use the setSensitiveMetaFields action.
Meta field keys should not include whitespace, emojis, special characters, or periods.
testMode?: boolean;
Marks the chatter as a test user.
toggleCallback?(isDrawerOpen: boolean): void;
Use this setting to trigger side effects when the web chat drawer is opened or closed.
zdChatterAuthCallback?(callback: (token: string) => void): void;
Use zdChatterAuthCallback for Zendesk chatter authentication. This setting allows you to request a JWT token from your API, then pass it to Ada. This creates shared trust between Ada and Zendesk, and in turn allows for verifiable chatter identity within the context of a chat session.
Ada waits up to 30 seconds for the callback to be triggered before loading chat. If the callback isn’t triggered within that time, Ada abandons the request. If you need to bypass authentication, ensure you call the callback with no arguments.
zdChatterAuthCallback is available only for Zendesk Chat. It is not available for Zendesk Messaging.
You can call all of the following Embed2 Actions from the global adaEmbed object.
closeCampaign(): Promise<void>;
Closes the currently displayed campaign (does nothing if no campaign is currently displayed).
This action requires the Ada Pro package.
This action is only applicable if you’re using a scripted bot.
deleteHistory(): Promise<void>;
Deletes the chatter object used to fetch conversation logs for a user from storage. When a user opens a new chat window, a new chatter object is generated.
evaluateCampaignConditions(options: CampaignParams): Promise<void>;
This is similar to triggerCampaign, however, instead of triggering a specific Campaign, evaluateCampaignConditions evaluates the trigger conditions of the Campaigns in priority order, and triggers the first Campaign whose conditions are matched. This can be useful, for example, if Embed2 cannot determine that the route has changed, and the campaign trigger rules need to be evaluated again.
An optional argument options can be passed that matches the CampaignParams interface. These options settings may be helpful when testing your Campaign:
ignoreFrequency?: boolean: if ignoreFrequency is true, trigger conditions for Campaigns that have already been triggered within the configured frequency are also evaluated and may be triggered.ignoreStatus?: boolean: if ignoreStatus is true, trigger conditions for inactive and draft Campaigns are also evaluated and may be triggered.This action requires the Ada Pro package.
This action is only applicable if you’re using a scripted bot.
getInfo(): Promise<WindowInfo>;
Returns a WindowInfo object containing information about the bot. See WindowInfo for more details.
getConversation(): Promise<ConversationInfo>;
Returns information about the active conversation — its id (or null if the chatter hasn’t sent or received any messages yet) and the live-agent handoff state. See ConversationInfo for the full shape.
Requires enableProgrammaticControl: true. Otherwise rejects with ProgrammaticControlNotEnabled.
getMessages(): Promise<Message[]>;
Returns the messages currently held in the chat session, in the order they were sent. See Message for the field shape.
Requires enableProgrammaticControl: true. Otherwise rejects with ProgrammaticControlNotEnabled.
Important behaviors:
role of "user", "bot", or "agent".getMetaFields(): Promise<FlatObject>;
Returns the metaFields currently set on the active chatter — the values passed to start({ metaFields }) plus any subsequent setMetaFields updates.
isOpen(): Promise<boolean>;
Resolves to true when the chat drawer is open, and false otherwise. Always returns false in headless mode.
reset(resetParams?: ResetParams): Promise<void>;
Creates a new chatter and refreshes the Chat window. reset can take an optional object allowing you to change the language, metaFields, sensitiveMetaFields, and greeting for the new chatter.
sendMessage(text: string): Promise<{ id: string }>;
Sends a message to the bot on behalf of the chatter. Resolves with the new message’s id, which matches the id you’ll see on the same message in getMessages and in the ada:message:sent event payload.
Requires enableProgrammaticControl: true. Otherwise rejects with ProgrammaticControlNotEnabled.
Possible rejections:
sendMessage requires non-empty text — text is empty or whitespace-only.DelegateRejected — a registered beforeSend hook returned false.DelegateTimeout — the beforeSend hook did not resolve within 5 seconds.sendMessage rejected by chat: <CODE> — chat-side validation rejected the message. Codes include TOO_LONG (exceeds the generative composer cap of 500 characters), RATE_LIMITED (a previous send is still in flight), and EMPTY_TEXT.To attach metadata to the conversation, use setMetaFields before calling sendMessage.
setComposerText(text: string): Promise<void>;
Pre-fills the chat composer with text without sending it. The chatter can still edit or clear the text before sending.
Requires enableProgrammaticControl: true. Otherwise rejects with ProgrammaticControlNotEnabled. Not available in headless mode (rejects with HeadlessModeError). Rejects with setComposerText rejected by chat: TOO_LONG if text exceeds the visible composer’s 500-character cap.
setDelegate(delegate: Delegate): void;
Registers a beforeSend hook that runs on outgoing messages sent via sendMessage. Use it to transform, cancel, or pass the message through.
Requires enableProgrammaticControl: true. Otherwise throws synchronously with ProgrammaticControlNotEnabled.
The hook fires only for programmatic sendMessage() calls. Messages typed into the chat composer (when the visible UI is in use) are sent through a separate path and do not flow through beforeSend. Do not rely on this hook as a moderation or PII-redaction gate for composer input — it will not see those messages.
The hook receives { text: string } (not a full Message) and returns one of:
{ text: string } to change what’s sent.false (or a Promise resolving to false) to cancel. sendMessage rejects with DelegateRejected.The hook can be synchronous or asynchronous. It is bounded by a 5-second timeout — a slow or never-resolving delegate causes sendMessage to reject with DelegateTimeout. The transformed text is re-validated: returning { text: "" } or { text: " " } causes sendMessage to reject (the message is not sent).
Set beforeSend to undefined to clear the hook.
See Delegate for the type shape.
setLanguage(language: string): void;
Changes the language in chat programatically. Use this action, rather than the language setting, to change the chat language without clearing the chat history. Language codes must use a lowercase, two-letter code, in ISO 639-1 language format. For example, en, fr, ca, ar, and so on.
Before using setLanguage:
You must turn languages on in your Ada dashboard.
The chat window must be opened at least once.
setMetaFields(fields: FlatObject): Promise<void>;
Used to update metaFields after chat has been opened. In most situations, the metaFields settings object should be enough for user attribution. However, in cases where Ada chat remains open while page changes occur (like in Single Page Applications), this method may be useful.
Meta field keys should not include whitespace, emojis, special characters, or periods.
setSensitiveMetaFields(fields: FlatObject): Promise<void>;
Use this action to update sensitiveMetaFields after chat has been opened. Here, the values are not stored in the database and are deleted after 24 hours.
Meta field keys should not include whitespace, emojis, special characters, or periods.
start(adaSettings: StartOptions): Promise<void>;
Used to initialize Embed2 on your page. This action is triggered by default internally, so you will typically not need to call it directly unless you are using Embed2 in lazy mode, or have called stop and want to restart Embed2.
StartOptions matches anything listed in the Settings section (for example, adaReadyCallback).
stop(): Promise<void>;
Removes Embed2 from your page.
subscribeEvent(eventKey: string, callback: (data: object, context: object) => void): Promise<number>
Certain things in Ada trigger events. Each event consists of an event key and a data payload. Using subscribeEvent, you can define callbacks that are called when a specific event is triggered.
Callbacks are triggered whenever an event starts with the eventKey provided to subscribeEvent. This means you can subscribe to all events of a certain category. For example, the callback in a subscription to ada:campaigns will be called on ada:campaigns:shown, ada:campaigns:opened, and any other events beginning with ada:campaigns.
Two arguments are provided to each callback when it is called: data and context:
data is specific to each event.context is an object with a single property, the eventKey of the event that triggered the callback.subscribeEvent returns a number subscriptionId that you can use to unsubscribe later (see unsubscribeEvent).
It is strongly recommended that you place initial subscriptions to events in the onAdaEmbedLoaded function. This ensures that:
The following are the events that you can currently subscribe to:
The events that begin with ada:agent are compatible with the following handoffs:
toggle(): Promise<void>;
Used toggle to programatically open or close the chat window. You cannot use this method with the parentElement option.
triggerAnswer(answerId: string): void;
Triggers an answer in chat. Include the Answer ID, which you can find in the URL of the corresponding Answer in the dashboard.
Example

The chat window must be opened at least once before this method can be used.
This action is only applicable if you’re using a scripted bot.
triggerCampaign(campaignKey: string, options: CampaignParams): Promise<void>;
Use in conjunction with campaignKey to trigger proactive campaigns. It supports two optional arguments:
ignoreFrequency?: boolean: when set to true, allows campaign triggering even if it’s already been triggered within the frequency configured in the dashboard campaign settings.ignoreStatus?: boolean: when set to true, allows campaign triggering even if it’s inactive or in a draft state.In most cases, you should set these to false, so that the original settings configured for the campaign take precedence. There may be specific cases in which you might enable ignoreFrequency. For example, a campaign that is shared across multiple pages, that you want to show once on a single page (such as the main page of a help center), but show once per session on all subpages.
See Embed Campaign Use Cases for some examples of how to use this action.
This action requires the Ada Pro package.
This action is only applicable if you’re using a scripted bot. For a generative AI Agent, see triggerProactive instead.
triggerProactive({ messageKey: string, params?: Record<string, string> }): void;
Triggers a proactive conversation using a specified key. This will display predefined static or template messages, where template messages can include dynamic parameters.
Parameters
Examples
Triggering a static Proactive Conversation
Ex: “Hello, how can I help you today?”
Triggering a template Proactive Conversation
Ex: “Hello {{name}}, how can I help you today?”
This action is only applicable if you’re using a generative AI Agent. For a scripted bot, see triggerCampaign instead.
This action is only applicable if you’re using a generative AI Agent.
trackEvent(eventKey: string, value?: number, meta?: FlatObject)
Use this to track an Event. The arguments of this function are:
eventKey: string: the key of the Event to track (required).value?: number: an optional value to assign to the Event.meta?: FlatObject: an optional object containing metadata corresponding to the Event. For example, it may be useful to track information such as currency, product group, customer segment, and so on.This action requires the Ada Pro package.
unsubscribeEvent(subscriptionId: number): void;
Use this function to remove subscriptions created with the subscribeEvent function. It takes a single parameter, subscriptionId, which is the id of the subscription to be removed.
Embed2 actions commonly use the following type signatures.
The shape returned by getConversation. id is the id of the active conversation, or null if the chatter hasn’t sent or received any messages yet. handoff.agent is populated only during an active live-agent handoff.
The object accepted by setDelegate. beforeSend is called for messages sent via sendMessage only (not composer-typed messages) — return { text } to change it, false to cancel it (causing sendMessage to reject with DelegateRejected), or pass the input through unchanged. Bounded by a 5-second timeout.
The message shape returned by getMessages and carried in the ada:message:sent and ada:message:received event payloads.