Amazon, Shopify and TikTok Shop, finally in one place.
Marten syncs sales and inventory from all three channels into one live view, forecasts what to reorder, and answers questions about your business in plain English in Claude, ChatGPT and Grok.
Illustrative demo with sample data.
Connects the channels you already sell on
- Amazon Seller Central
- Shopify
- TikTok Shop
90% of ecommerce operators say operations is their weakest point.
POs sit in email threads. Warehouse stock is in your 3PL's dashboard. Amazon shipments are in Seller Central. Sales are split across three channels. Nobody adds it all up until something runs out, and by then the sales and the ranking are already gone.
Marten puts it in one forecast, tells you what to order and when to ship, then creates the POs and FBA shipments for you.
Why Marten
You shouldn't have to check your stock. It should text you when it's time to reorder.
One source of truth for omnichannel inventory
You run a separate app for Amazon, Shopify and TikTok Shop, and match up their numbers by hand.
Sales, inventory and reorders for all three channels in one place.
Alerts before you run out
You find out about a stockout when sales drop or a listing goes inactive.
You get a text while there's still time to reorder or send stock to FBA.
Reorders planned months ahead
POs go out when someone notices stock is low, often too late for the supplier's lead time.
Forecasts across all three channels tell you what to order, how much and when.
The product
One live view of everything you sell.
Every order, from every channel, on one dashboard
Revenue, orders and units across Amazon, Shopify and TikTok Shop, side by side. See which channel is carrying each SKU without opening three tabs.
- Channel split per SKU and per day
- Sell-through trends without manual exports
| SKU | Combined inventory | Amazon sales | Shopify sales | TikTok sales | Combined sales | Combined days of stock |
|---|---|---|---|---|---|---|
| Bottle-32oz | 865 | 19.5 | 3.2 | 4.0 | 26.7 | 32 |
| Bamboo-Sheets | 1,140 | 12.0 | 4.5 | 2.5 | 19.0 | 60 |
| PourOver-Set | 260 | 6.0 | 1.5 | 4.8 | 12.3 | 21 |
| Napkins-4pk | 1,320 | 8.0 | 2.2 | 1.0 | 11.2 | 118 |
One stock count, wherever the units sit
FBA, inbound shipments, your own warehouse or 3PL, and what each channel has listed, rolled into a single number per SKU, with alerts before a channel runs dry.
- Stock synced across all three channels
- Low-stock alerts per channel and location
| Date | Order to warehouse | Warehouse inventory | FBA shipment | FBA inventory | Daily velocity | Days of stock |
|---|---|---|---|---|---|---|
| Oct 22 | 600 | (−60) 35 | 410 | 20 | 21 | |
| Oct 23 | 35 | 390 | 19 | 20 | ||
| Oct 24 | 35 | 371 | 20 | 19 | ||
| Oct 25 | 35 | (+300) 651 | 19 | 33 | ||
| Oct 26 | 35 | 632 | 20 | 32 | ||
| Oct 27 | 35 | 612 | 19 | 31 | ||
| Oct 28 | 35 | 593 | 20 | 30 | ||
| Oct 29 | (+600) 635 | 573 | 19 | 29 | ||
| Oct 30 | (−240) 395 | 240 | 554 | 20 | 28 | |
| Oct 31 | 395 | 534 | 19 | 27 | ||
| Nov 1 | (−100) 295 | 515 | 20 | 26 | ||
| Nov 2 | 295 | 495 | 19 | 25 | ||
| Nov 3 | 295 | 476 | 20 | 24 | ||
| Nov 4 | 295 | 456 | 19 | 23 | ||
| Nov 5 | 295 | 437 | 20 | 22 | ||
| Nov 6 | 295 | (+240) 657 | 19 | 34 | ||
| Nov 7 | 295 | 638 | 20 | 33 | ||
| Nov 8 | 295 | 618 | 19 | 32 |
Every day projected forward. Shipments texted to you before they're due.
Know what to reorder, and when
Demand forecasts built from your combined sales, with reorder points and suggested purchase orders that account for your supplier's lead time.
- Forecasts per SKU across all channels
- Reorder dates and PO quantities, ready to send
AI Amazon Shipment Creation
Never make a shipment yourself again.
Our shipment MCP builds FBA shipments in Seller Central from your forecast, hands the labels to your AI to send to your 3PL, and tracks them until they check in. Approve it by text or from Claude, ChatGPT or Grok.
- 01Reads your stock and velocity
- 02Creates the shipment in Seller Central
- 03Downloads labels for your AI to send to your 3PL
- 04Tracks shipment status
Bamboo-Sheets: 35 days, send 300
PourOver-Set: 37 days, send 138
Pillowcase-Queen: 44 days, send 80
Towel-Set-6pc: 52 days, send 56
Unit shipping cost: $0.42 per unit (1,334 units)
AI and MCP
Ask your business anything, in the AI you already use.
Connect your account to Claude, ChatGPT, Grok or any other MCP client. Your sales, stock and forecasts become tools your AI can call, so answers come from your real numbers.
Questions sellers ask it
How it works
Connected in minutes, not a quarter-long setup.
- 01
Connect your stores
Sign in to Amazon, Shopify and TikTok Shop from Marten. No CSV uploads, no developer needed.
- 02
We unify the data
Orders and inventory are matched by SKU across channels and kept in sync, so every number agrees.
- 03
Ask and act
Check the dashboard, follow reorder suggestions, or ask your AI tool.
Why we're building this
“As sellers, we need to stop focusing on operating our business and focus on growing it. Marten streamlines your operations into one source of truth so you can grow your business.”
Get early access
We're inviting sellers in waves. Tell us a little about your business so we can invite the stores Marten fits best first.
- Takes under a minute
- We'll email you when your invite is ready
Frequently asked questions
We support Amazon, Shopify and TikTok Shop.