diff --git a/src/MetricsProvider.ts b/src/MetricsProvider.ts
index 192be32..e2b12f9 100644
--- a/src/MetricsProvider.ts
+++ b/src/MetricsProvider.ts
@@ -1,7 +1,8 @@
 import { COUNTLY_SETUP_DEFAULTS } from './config.js'
+import { EventAccumulator } from './EventAccumulator.js'
 
-import type { metricFeatures, CountlyWebSdk } from 'countly-sdk-web'
 import type { CountlyNodeSdk } from 'countly-sdk-nodejs'
+import type { CountlyWebSdk, metricFeatures } from 'countly-sdk-web'
 import type { consentTypes, consentTypesExceptAll } from './types/index.js'
 
 export interface MetricsProviderConstructorOptions<T> {
@@ -9,13 +10,14 @@ export interface MetricsProviderConstructorOptions<T> {
   autoTrack?: boolean
   interval?: number
   max_events?: number
+  metricsService: T
   queue_size?: number
   session_update?: number
   url?: string
-  metricsService: T
 }
 
 export default class MetricsProvider<T extends CountlyWebSdk & CountlyNodeSdk> {
+  public readonly accumulate: EventAccumulator
   private readonly groupedFeatures: Record<consentTypes, metricFeatures[]> = this.mapAllEvents({
     minimal: ['sessions', 'views', 'events'],
     performance: ['crashes', 'apm'],
@@ -40,6 +42,7 @@ export default class MetricsProvider<T extends CountlyWebSdk & CountlyNodeSdk> {
       url,
       require_consent: true
     })
+    this.accumulate = new EventAccumulator(metricsService)
 
     this.metricsService.init(serviceConfig)
     this.metricsService.group_features(this.groupedFeatures)
diff --git a/src/types/countly.d.ts b/src/types/countly.d.ts
index d50df1b..2dd5821 100644
--- a/src/types/countly.d.ts
+++ b/src/types/countly.d.ts
@@ -1,11 +1,12 @@
 declare module 'countly-sdk-web' {
-  interface CountlyEventData {
+  export interface CountlyEventData {
     key: string
     count: number
     sum: number
-    segmentation: Record<string, string | number>
+    dur: number
+    segmentation: Segments
   }
-  interface CountlyEvent {
+  export interface CountlyEvent {
     // name or id of the event
     key: string
     // how many times did event occur
@@ -18,12 +19,18 @@ declare module 'countly-sdk-web' {
     segmentation?: Segments
   }
 
+  export interface IEventAccumulator {
+    addEvent: (event: CountlyEvent, flush: boolean) => void
+    flush: (key: string) => void
+  }
+
   export type metricFeatures = 'apm' | 'attribution' | 'clicks' | 'crashes' | 'events' | 'feedback' | 'forms' |
   'location' | 'scrolls' | 'sessions' | 'star-rating' | 'users' | 'views'
   type Segments = Record<string, string>
   type IgnoreList = Array<string | RegExp>
   type CountlyEventQueueItem = [string, CountlyEventData] | [eventName: string, key: string] | [eventName: string]
   export interface CountlyWebSdk {
+    accumulate: IEventAccumulator
     group_features: (arg0: Record<import('./index.js').consentTypes, metricFeatures[]>) => unknown
     check_consent: (consentFeature: metricFeatures | import('./index.js').consentTypes) => boolean
     add_consent: (consentFeature: import('./index.js').consentTypes | Array<import('./index.js').consentTypes>) => void