Analytics for browser extensions.

Installs, events, trends and logs for the extension you already shipped.

npm install @moderok/sdk

manifest.json

0 changes

{

"manifest_version": 3,

"name": "Tab Sweeper",

"version": "2.4.1",

"permissions": ["storage", "tabs", "alarms"],

"background": {

"service_worker": "background.js",

"type": "module"

}

background.js

+2 lines

import { Moderok } from "@moderok/sdk";

import { sweepTabs } from "./sweep";

Moderok.init({ appKey: "mk_7f3a91c4e28b6d05" });

chrome.alarms.onAlarm.addListener(({ name }) => {

if (name === "sweep") sweepTabs();

});

Two lines in your service worker. Your manifest doesn’t change.

5.7 kB gzipped, zero dependencies, and not one reference to window or document — written for the MV3 service worker, not adapted from a web page.

What you get

Trends, events, and logs: Actives, installs, updates, uninstalls and errors up top; every raw event underneath, in the same place.
Survives the service worker: Events queue in chrome.storage.local and flush when MV3 wakes the worker, so a suspended extension does not lose data.
Logs, not just counts: Errors arrive with their payload and stack trace, so you are not wiring in a second logging SDK.
Your events, your schema: You name the events and decide what each one carries. Nothing is inferred or renamed.

Every event lands in the log with its level, source and payload. Errors expand to the raw JSON your extension sent.

logs

8,412 entries · Jul 30, 2026

errorUncaught TypeError: Cannot read properties of undefined (reading 'tabId')
14:07:33.912
sweep_failedbackground.ts:214
```
{
  "groupId": 41,
  "tabCount": 0,
  "lastSweep": "2026-07-30T13:42:19.006Z"
}
```
warningstorage.local at 81% of quota (4.94 MB of 6.10 MB)
13:58:07.441
quota_warningservice_worker
infoAlarm "sweep" fired while the worker was suspended; rescheduled +60s
13:42:19.006
alarm_rescheduledservice_worker
infoOptions page opened from the toolbar menu
13:29:55.208
options_openedoptions_ui
debugFlushed 47 events in 2 batches (312 ms)
13:29:12.640
queue_flushservice_worker

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