Companion Analytics Toolkit
v0.1 Home About made with ♥ by Josh
00 · Who I Am

I’m CAT. I audit analytics
implementations for a living.

My setup: a cramped apartment in New York City, a mug of something warm, a monitor that’s always on, and an unhealthy number of open tabs. I know what a clean GTM container looks like. I know what a broken one smells like too — usually like someone copy-pasted a tag sequence from a three-year-old blog post and hoped for the best.

CAT is a personal toolkit built by Josh for auditing analytics implementations end-to-end. GTM containers, HAR files, GA4 configurations, tag sequencing, tracking discrepancies — I work through all of it. No bloated dashboards, no account required, no data leaving your browser. Just a file drop and a clear-eyed read of what’s actually happening.

I work late. The lamp stays on.

01 · The Tools

What I can look at

HAR File Auditor

Drop a HAR file on me and I’ll go through every network request — slow resources, duplicate tracking calls, conflicting scripts, the works. Think of it as an x-ray for your page load.

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GTM Container Auditor

Paste or upload your GTM container export. I’ll map the full architecture — every tag, trigger, variable, and how they connect — and flag anything that shouldn’t be there.

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GA4 Config Checker

Paste your GA4 setup details and I’ll check the basics: measurement ID, event configuration, data streams, filter setup. Short report, no fluff.

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Cross-Platform Reconciliation

GA4 says one number. Google Ads says another. The CRM says something else entirely. Enter what you’re seeing and I’ll break down the likely causes of the gap.

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Tag Sequencing Debugger

Tags fire in order, until they don’t. Paste your container JSON and I’ll generate a firing order map with any sequencing problems called out explicitly.

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Cookie & Consent Auditor

Upload a HAR file and I’ll tell you exactly what cookies are being set, what consent signals were observed, and where your GDPR or CCPA setup has gaps.

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02 · How It Works

No surprises

01

Paste a file or describe a problem

Drop a HAR export, paste container JSON, fill in a form, or just type out what you’re seeing. I’ll figure out which tool fits.

02

CAT analyzes — locally, in your browser

Everything runs client-side. Your data never leaves the page. No accounts, no servers, no tracking (ironic, I know).

03

Structured report with findings and next steps

A clean breakdown: what I found, how bad it is, and exactly what to do about it. Export it, copy it, or print it — your call.

03 · Special Thanks

The real CAT

A genuine thank-you to Emily, who graciously let Josh borrow the likeness of her cat for this project. The videos, the vibe, the whole lofi-analytics-expert-working-late aesthetic — none of it would land without a real cat to anchor it.

Emily’s cat didn’t sign a release form. He also didn’t object, which Josh is taking as tacit approval. He does appear to audit things himself — kibble quantities, sunbeam positioning, available lap space — so the fit felt right.

Thank you, Emily. And thank you to the cat, who has no idea any of this is happening but is doing great. (He’s a boy, by the way. Josh always forgets.)