and start devouring the competition.
Private beta · accepting sellers on the waitlist
What it does
No bookkeeping paywall. No analytics you have to buy back. No half-built features we never finished.
Draft a shipment once, then ship it across your marketplaces from a single source of truth. Amazon FBA today, Walmart WFS next. No retyping box contents for each one.
Item labels, scannable box-content labels, box labels, and packing lists. Thermal or sheet: your sizes, your layouts. Best-By dates baked in with easy-to-set defaults.
Live fee estimates, prefilled pricing, per-item cost breakdowns, and full listing price history. Know what you're really making, with comparisons over time.
Direct two-way syncing with your marketplace that you can trigger yourself. Always know what's in stock, what's in transit, and what needs replenishing.
Watch shipments move through the fulfillment network in real time. No refresh, no guessing.
Invite your prep team, 3PL, or VAs. Built-in and custom roles let you control exactly what each person can do, so everyone stays in sync without oversharing.
Point Claude, or any agent that speaks MCP, straight at your account. Read inventory and draft manifests programmatically. No scraping, no glue code.
The unified manifest
Set up a shipment once, then reuse it. Enter box content, placement, and labels a single time, then copy any manifest into a fresh draft, so your next shipment starts where the last one left off, not from a blank page.
Bring your own agent
MarketMonster speaks the Model Context Protocol natively. Issue a scoped key and let your existing AI infrastructure read inventory and draft manifests directly. The same key also calls a documented REST API.
No brittle scraping, no middleware to maintain.
connect marketmonster mcpauthorizing scoped key…✓ 3 tools: list_inventory, draft_manifest, add_boxagent ready, drafting manifest #1043Printing: your way
Labels and packing material aren't one-size-fits-all, so we don't pretend they are. Print what you need, when you need it.
Profit, not guesswork
Profit math shouldn't be an afterthought. We bake it in: live fee estimates and listing price history while you source, then the real fees, cost of goods, and margin on every order once it sells. Price sharper and keep more of every sale.
Built for your whole operation
From solo sellers to agencies managing hundreds of clients, the same foundation scales with you. No second tool to bolt on.
Keep each seller account separate, organized, and easy to manage. Switch between clients in one click, or zoom out to see performance across all of them.
Owner, Admin, and Member, plus custom roles (Picker, Packer, Bookkeeper, or your own). Set exactly what each role can do, see a full history of who did what, and keep accounts safe from accidental lockouts.
Light, dark, and 33 more. Pick the look that fits your warehouse monitor or your late-night packing session, and it sticks across every device.
Beneath the surface
The easy to read, custom theming is the easy part. Underneath it runs a beast built to keep shipping when Amazon fights back.
Large shipment tasks run in the background, so you can keep working. The monster handles the heavy lifting.
If a shipment task gets interrupted, it picks up where it left off. The monster keeps your place.
Your seller account connection is protected with secure access controls and encrypted storage. The monster keeps watch.
Orders and shipment statuses update live across every device the moment anything changes. No stale numbers, no refresh. The monster is always ready.
Slowdowns, timeouts, and surprise hiccups from Amazon get handled behind the scenes. You get clear guidance every step of the way. Nothing rattles the monster.
Secure logins, clear billing, and dependable uptime. A solid backbone for a serious operation, with room to grow. The monster carries the weight.
Under the hood
Feature lists look similar at first glance. The difference is what happens when Amazon misbehaves.
Mystery blocks, hidden slowdowns, surprise hiccups. We see them coming and handle them, so your shipments stay the course.
Shipment options nearly always have a clear winner, whether you're looking for the fewest separate shipments, the closest warehouses, or the best value. We compare them all in real time, and your best option rises to the top.
Set prep details once in Inventory or during shipment setup. See the right prep steps in your packing lists and while you box.
Build a reusable library of box and case-pack templates while you ship. Box sizes carry across products; case-pack sizes and counts save per product. Manage everything later in Settings.
Manifesto
While your competition grinds through busywork you're already prepping for your next shipment.
Lab results are in
You're working too hard for too little.
Endless tabs. Unreliable boxing forms. Painfully slow back and forth with overworked support agents.
Every hour lost to logistics is an hour off your margin.
Your new normal
Don't just manage your inventory.
Devour the competition.
MarketMonster turns inbound chaos into an unfair advantage. Ship faster, price sharper, and leave the lab rats behind.
They're still running the maze you already solved.
Pricing
Each Amazon FBA manifest you ship costs one credit. Credits roll across every tier, so you can start on PAYG and graduate when your volume earns it.
Plan calculator
Move the slider. Pick the platforms you target. We’ll run the numbers across every tier and recommend the one that costs you the least.
Solo saves you $28.01/mo vs. buying credits one pack at a time.
Pay only for the manifests you ship. Credits never expire.
Single-shop monthly auto-refill — built for steady-volume sellers.
Role separation, team pick-lists, priority support.
Multi-store, warehouse workflows, API & webhooks.
SSO, SLA, custom integrations, dedicated onboarding.
What you won't find here
Your competition is still counting pennies. The monster counts profit.
Private beta. Join the waitlist and we'll bring you in as we scale onboarding.