NEWChange Tracker — measure the impact of every account change

Mondays,
already written.

Kaiju reads your Seller Central account overnight and delivers a written briefing at 7am — what changed, what it means, what to do this week.

Start a reportSee a sample brief
No credit card required·14-day free trial
kaiju.report / nimbus-glass / board-brief
ShareExport
Week of Mar 11 · Nimbus Glassware Co.Delivered 7:02 AM

Glass sales up 14%, one SKU needs attention.

Revenue finished at $61,400, the strongest week since January. Tumblers carried the gain — organic rank on your two hero terms held while ad-driven sessions climbed 22%. Advertising efficiency softened: total ACoS rose from 23% to 27.4%, almost entirely from SKU-4412.

Revenue
$61,400
↗ +14.2%
Ad spend
$14,220
↗ +31.0%
ACoS
27.4%
↘ +4.4pt
Account Health
88
↘ −4
Our features

Stop pulling reports.
Start the week already briefed.

Kaiju replaces the 2–4 hours every Monday you spend stitching together Seller Central, Helium 10, and a dozen tabs. We read the account. You read the brief.

Written, not dashboarded

A document that reads like a senior analyst wrote it.

Executive summary in prose. A tight metrics table. Two or three prioritized actions with evidence. Delivered to your inbox and Slack at 7am Monday — before your first coffee, before any client calls.

4 hrs
saved per account / wk
42s
to generate a full brief
11
agents behind each one
Board Brief · Mon Mar 117:02 AM
Glass sales up 14%, one SKU needs attention.

Revenue finished at $61,400, the strongest week since January. Advertising efficiency softened: total ACoS rose from 23% to 27.4%, almost entirely from SKU-4412.

Revenue
$61,400
+14.2%
ACoS
27.4%
+4.4pt
Account Health
88
−4
Do this week
  1. Pause the SKU-4412 broad-match campaign.
  2. Contact Reno warehouse about late shipments.
+
Log a change
SKU, copy, price, image, campaign…
Log
SKU-4412 — raised price $24 → $27
Feb 18
Before 14 d
Rev$3,120
Units130
ACoS19%
After 14 d
Rev$4,610
Units171
ACoS22%
Net impact: +$1,490 revenue · +41 units · ACoS +3pt
Change Tracker — measure every change against reality.

Log price changes, copy edits, new creative, bid moves. Kaiju attributes the before/after lift with real SP-API data. No other Amazon tool does this.

Testimonial

“Kaiju replaced my Monday analyst. I used to spend three hours preparing a client readout — now I read the brief, walk into the call, and we spend the hour talking about what to do next.”

Marcus Chen
Founder, Harbor Bay Amazon Agency
Delivery
Briefs land where you already read — inbox and Slack.

The Board Brief drops Monday at 7am. One-page summary for you, full report available in the portal, white-labelled PDFs for client distribution on Agency plans.

GmailOutlookSlackPDF exportWhite-label
k
Kaiju <briefs@kaiju.report>
to you · Mon 7:02 AM
Week of Mar 11 — glass sales up 14%
Revenue $61,400 (+14.2%). Ad efficiency softened on one SKU. Three actions inside.
📎 Board-brief-mar-11.pdf2 pages
How it works

Eleven agents.
One written briefing.

A Claude pipeline runs overnight. Specialists analyze in parallel, a reasoning agent synthesizes, executives add framing, QA checks everything, and a delivery agent assembles the final document.

Specialists
Sales Analyst
revenue, units, rank
Inventory Analyst
days of cover, restock
Ads Analyst
ACoS, campaigns, bids
Account Health
feedback, late ships
Reasoning
Reasoning Agent
cross-silo risks & opportunities
Executives
CEO
strategic framing
CFO
margin, unit economics
CMO
brand, demand
QA
Accuracy QA
numbers tied to source
Clarity QA
reads like a briefing
Delivery
Delivery Agent
Board Brief + Full Report
7:02 AM Mon
Inbox · Slack · PDF
11
specialist + executive agents
42s
average brief generation
4 hrs
saved per account / wk
$0
dashboards to log into
Plans

Simple pricing.
Pick your tier.

Every plan starts with a 14-day free trial. No credit card required. Cancel any Monday.

Starter
For a single seller running one Amazon brand.
$49/month
1 seller account
  • Weekly Monday digest
  • Slack + email delivery
  • Urgent alerts mid-week
  • 30-day report history
Start with Starter
Most popular
Growth
For sellers or small agencies running a few accounts.
$99/month
3 seller accounts
  • Everything in Starter
  • AI chat on your data
  • Market intelligence
  • Bring your own API key
  • 90-day report history
Start with Growth
Agency
For agencies managing a roster of client brands.
$249/month
Unlimited seller accounts
  • Everything in Growth
  • White-label briefs
  • Client portal
  • Priority support
  • 1-year report history
Start with Agency
Billed monthly. All plans include the full 11-agent pipeline and the Change Tracker.
Testimonials

Don't take our word for it.

The first Monday brief caught a $4,200/week problem I was going to miss. It paid for itself on day one. I now send the white-labelled PDF straight to my clients before the weekly call.

Priya Sharma
Partner, Meridian Commerce

I stopped asking my junior analyst to pull reports. Kaiju does it — better, faster, with actual recommendations. She's doing higher-value work now.

Jonas Weller
Director of Operations, Altitude Brands

Change Tracker is the feature I didn't know I needed. Every price test, every copy rewrite — I finally know what actually moved the needle.

Elena Ruiz
Amazon Lead, Foundry & Co.