Event collection you own, version, and trust

From browser to BigQuery and ad platforms - warehouse-native, and ready for AI agents via MCP.

The problem

GA4, custom tags, ad pixels - each one a separate setup, none of them agreeing on the same numbers. When something breaks, you can't see where.

walkerOS is one collection layer for all of them.

Why walkerOS?

• Config-as-code - version control your tracking, review it in PRs, deploy with confidence
• Declarative tagging - tag your UI in HTML, not scattered JavaScript
• Consent-native - events queue until consent is given, then flush correctly to every destination
• Schema validation - catch bad events at collection time, not weeks later in a dashboard
• One layer, many destinations - send to your warehouse and ad platforms from a single event definition
• Warehouse-native - events land clean and structured in your data warehouse, ready to query
• MIT licensed - self-host anywhere, no vendor lock-in

How it works

• Sources: Where events come from (browser, dataLayer, Express, AWS Lambda, GCP Functions, and more)
• Collector: The processing engine (consent, validation, mapping, routing, enrichment)
• Destinations: Where events go (GA4, Google Ads, Meta CAPI, BigQuery, and more)

Two ways to install walkerOS

Choose one based on your workflow and integration possibilities:

Integrated (import into your app):

import { startFlow } from '@walkeros/collector';

const { elb } = await startFlow({
  destinations: {
    console: {
      code: {
        type: 'console',
        config: {},
        push: (event) => console.log('Event:', event.name),
      },
    },
  },
});

await elb({ name: 'page view', data: { title: 'Home' } });
// -> logs: Event: page view

Wire a real source and destination once you are ready:

import { startFlow } from '@walkeros/collector';
import { sourceBrowser } from '@walkeros/web-source-browser';
import { destinationGtag } from '@walkeros/web-destination-gtag';

await startFlow({
  sources: {
    browser: {
      code: sourceBrowser,
      config: { settings: { pageview: true } },
    },
  },
  destinations: {
    ga4: {
      code: destinationGtag,
      config: {
        settings: { ga4: { measurementId: 'G-XXX' } },
      },
    },
  },
});

Bundled (build fr

... View full README on GitHub