API Documentation

Complete reference for all public methods in the FlutterCrispChat class.

Platform support

API	Android / iOS	Web	Desktop
openCrispChat	Native SDK UI	Web chatbox	WebView or browser
resetCrispChatSession	Yes	Yes	WebView only
setSessionString / setSessionInt / setSessionSegments	Yes	Yes	WebView only
pushSessionEvent	Yes	Yes	WebView only
getSessionIdentifier	Yes	Yes	WebView only
getUnreadMessageCount / markMessagesAsRead	Yes	Yes*	Yes*
openHelpdesk	Native SDK UI	Web chatbox	WebView or browser
openHelpdeskArticle	Native SDK UI	Web chatbox	WebView or browser
openChatboxFromNotification	Android (primarily)	No-op	No-op
setOnNotificationTappedCallback	Android	No-op	No-op
isVideoCallsSupported	iOS (opt-in WebRTC)	No (upstream)	Yes (web widget)

* Prefer a backend proxy for REST credentials on Web. See Supported Platforms.

FlutterCrispChat

All methods are static on the FlutterCrispChat class.

import 'package:crisp_chat/crisp_chat.dart';

---

openCrispChat

Opens Crisp chat: native UI on Android/iOS, web chatbox on Web, embedded WebView (or browser fallback) on desktop.

static Future<void> openCrispChat({required CrispConfig config})

Parameter	Type	Required	Description
config	CrispConfig	Yes	Configuration object with website ID, user details, etc.

Throws:

• ArgumentError if config.user.email is provided but invalid
• ArgumentError if config.user.company.url is provided but invalid

Behavior: After opening the chat, the method waits 3 seconds and then caches the session identifier internally.

---

resetCrispChatSession

Resets the current chat session and clears cached data.

static Future<void> resetCrispChatSession()

Call this when your app user logs out to clear their chat history from the device.

---

setSessionString

Sets a custom string value in the current session.

static void setSessionString({required String key, required String value})

Parameter	Type	Required	Description
key	String	Yes	Data key (must not be empty)
value	String	Yes	String value (must not be empty)

Throws: ArgumentError if key or value is empty.

---

setSessionInt

Sets a custom integer value in the current session.

static void setSessionInt({required String key, required int value})

Parameter	Type	Required	Description
key	String	Yes	Data key (must not be empty)
value	int	Yes	Integer value

Throws: ArgumentError if key is empty.

---

getSessionIdentifier

Retrieves the current Crisp session identifier.

static Future<String?> getSessionIdentifier()

Returns: The session ID string, or null if no session exists. Falls back to a cached value if the native SDK returns null.

---

setSessionSegments

Sets user segments for the current session.

static void setSessionSegments({
  required List<String> segments,
  bool overwrite = false,
})

Parameter	Type	Required	Default	Description
segments	List<String>	Yes	—	Segment strings
overwrite	bool	No	false	Replace existing segments if true

---

pushSessionEvent

Sends a custom event to the Crisp session timeline.

static Future<void> pushSessionEvent({
  required String name,
  SessionEventColor color = SessionEventColor.blue,
})

Parameter	Type	Required	Default	Description
name	String	Yes	—	Event name
color	SessionEventColor	No	blue	Event color in the dashboard

---

getUnreadMessageCount

Fetches the unread message count via the Crisp REST API.

static Future<int?> getUnreadMessageCount({
  required String websiteId,
  required String identifier,
  required String key,
})

Parameter	Type	Required	Description
websiteId	String	Yes	Your Crisp Website ID
identifier	String	Yes	Crisp REST API Identifier
key	String	Yes	Crisp REST API Key

Returns: Unread count as int, or null if no session or error.

iOS

On iOS, unread.visitor may not reset after reading chat in the native SDK. Use markMessagesAsRead as a workaround.

---

markMessagesAsRead

Marks all operator messages as read via the Crisp REST API. Workaround for iOS when the native SDK does not sync read receipts.

static Future<bool?> markMessagesAsRead({
  required String websiteId,
  required String identifier,
  required String key,
})

Parameter	Type	Required	Description
websiteId	String	Yes	Your Crisp Website ID
identifier	String	Yes	Crisp REST API Identifier
key	String	Yes	Crisp REST API Key

Returns: true if accepted (HTTP 202), false on error, null if no session.

---

openChatboxFromNotification

Opens the Crisp chatbox from a notification intent (Android only).

static Future<bool> openChatboxFromNotification()

Returns: true if the chatbox was opened from a notification, false otherwise. Always returns false on iOS.

---

setOnNotificationTappedCallback

Sets a callback for when a Crisp notification is tapped while the app is in the background.

static void setOnNotificationTappedCallback(VoidCallback? callback)

Parameter	Type	Required	Description
callback	VoidCallback?	Yes	Callback function, or null to remove

Note: Requires import 'dart:ui'; for VoidCallback. Only fires on Android.

---

isVideoCallsSupported

Returns whether the current build supports Crisp video/audio calls.

static Future<bool> isVideoCallsSupported()

Platform	Returns true when
iOS	App was built with video enabled: $CrispChatWebRTC = true (CocoaPods) or CRISP_CHAT_WEBRTC=true (SPM)
Android	Never (native video not supported yet by Crisp)
Web / desktop	Web chatbox handles calls via browser WebRTC when enabled in your Crisp dashboard

Important: This is a build-time capability check, not a runtime toggle. There is no CrispConfig flag for video. Setup: Enable video calls (iOS only).

Example:

if (await FlutterCrispChat.isVideoCallsSupported()) {
  // iOS WebRTC build, or Web/desktop
}

---

openHelpdesk

Opens the Crisp Helpdesk/FAQ search screen directly, without first opening live chat. Supported on all platforms.

static Future<void> openHelpdesk({required String websiteId})

Parameter	Type	Required	Description
websiteId	String	Yes	Your Crisp website ID

Throws: ArgumentError if websiteId is empty or whitespace-only.

Example:

await FlutterCrispChat.openHelpdesk(websiteId: 'YOUR_WEBSITE_ID');

Platform	Behaviour
Android / iOS	Native SDK: calls Crisp.searchHelpdesk() / CrispSDK.searchHelpdesk()
Web	$crisp.push(["do", "helpdesk:search"]) via the Crisp Web Chat SDK
Desktop	Same $crisp command injected into the embedded WebView

See Helpdesk / FAQ for full details.

---

openHelpdeskArticle

Opens a specific helpdesk article by locale and slug. Supported on all platforms.

static Future<void> openHelpdeskArticle({
  required String websiteId,
  required String locale,
  required String slug,
  String? title,
  String? category,
})

Parameter	Type	Required	Description
websiteId	String	Yes	Your Crisp website ID
locale	String	Yes	Article language code (e.g. 'en', 'fr')
slug	String	Yes	Article slug from your Crisp Helpdesk dashboard
title	String?	No	Optional display title override
category	String?	No	Optional category name

Throws: ArgumentError if websiteId, locale, or slug is empty.

Example:

await FlutterCrispChat.openHelpdeskArticle(
  websiteId: 'YOUR_WEBSITE_ID',
  locale: 'en',
  slug: 'getting-started',
  title: 'Getting Started',
  category: 'General',
);

The article slug can be found in your Crisp dashboard under Helpdesk → open an article → the URL and article settings contain the slug.

Platform	Behaviour
Android / iOS	Native SDK: Crisp.openHelpdeskArticle() / CrispSDK.openHelpdeskArticle()
Web	$crisp.push(["do", "helpdesk:article:open", [locale, slug, ...]]) via the Crisp Web Chat SDK
Desktop	Same $crisp command injected into the embedded WebView

See Helpdesk / FAQ for full details.

---

onCrispEvent

A broadcast stream of native Crisp SDK events. Supported on Android and iOS only — never emits on Web/desktop.

static Stream<CrispChatEvent> get onCrispEvent

The native event callback is registered on the first .listen() call and unregistered once the last listener cancels.

Example:

final subscription = FlutterCrispChat.onCrispEvent.listen((event) {
  print('${event.type}: ${event.message?.text}');
});

await subscription.cancel();

Platform	Behaviour
Android	Native SDK: Crisp.addCallback(EventsCallback) / Crisp.removeCallback()
iOS	Native SDK: CrispSDK.addCallback(Callback) / CrispSDK.removeCallback(token:)
Web / Desktop	Not supported — the stream never emits

See Chat Events for full details, including the CrispChatEvent/CrispMessage field reference.

---

CrispConfig

CrispConfig({
  required String websiteID,
  String? tokenId,
  String? sessionSegment,
  User? user,
  bool enableNotifications = true,
})

User

User({
  String? email,
  String? signature,
  String? nickName,
  String? phone,
  String? avatar,
  Company? company,
})

Company

Company({
  String? name,
  String? url,
  String? companyDescription,
  Employment? employment,
  GeoLocation? geoLocation,
})

Employment

Employment({
  String? title,
  String? role,
})

GeoLocation

GeoLocation({
  String? city,
  String? country,
})

SessionEventColor

enum SessionEventColor {
  black, blue, brown, green, grey,
  orange, pink, purple, red, yellow,
}

Next Steps

• Full Example — Working example app code
• FAQ — Frequently asked questions