Turn your MWI Animal Health store into an API

What you can build on MWI

• Get backorders

  Build this

  Reads your backorders in the MWI online store, each with its expected availability date and whether it is available to order again.

  Takes

  Available only (optional)

  Returns

  Product, item number, quantity, expected availability date, available now

• Get pending orders and recent shipments

  Build this

  Reads the pending orders, recent shipments and monthly spending shown on your dashboard in the MWI online store.

  Takes

  Nothing

  Returns

  Pending orders, recent shipments with date and items, monthly spending

• Read an ordering List

  Build this

  Opens one of your saved Lists, the reusable ordering templates in the MWI online store, and reads its products with their shelf.

  Takes

  List name

  Returns

  Product, item number, shelf

• Add available backorders to the cart

  Build this

  Adds backordered products that are available again to your current cart in the MWI online store, without placing the order.

  Takes

  Item numbers, quantities

  Returns

  Items added, quantity, price, cart total

Automate MWI with a workflow

A workflow runs your methods as one process, with nobody at the screen. A schedule or a call from your own system starts it, the steps run in order, and the result arrives in your inbox or in the systems you already use.

• Backorders available again, each weekday morning

  Build this

  Starts

  Every weekday at 7:00

  Step 1

  Get your backorders from the MWI online store.

  Step 2

  Keep the ones available now that were not available on the last run.

  Step 3

  Email you the product, item number, quantity and expected availability date.

• Recent shipments, handed to receiving

  Build this

  Starts

  Every weekday at 8:00

  Step 1

  Get the pending orders and recent shipments from your MWI dashboard.

  Step 2

  Keep the shipments that were not there on the last run.

  Step 3

  Post each one, with its date and items, to your inventory system's webhook.

• Month-to-date spending and pending orders, each Monday

  Build this

  Starts

  Every Monday at 7:00

  Step 1

  Get the monthly spending, pending orders and recent shipments from your MWI dashboard.

  Step 2

  Have an AI step summarize the pending orders by how long they have been pending.

  Step 3

  Email you the monthly spending figure and the summary.

You can run a workflow by hand on every plan, Free included. Schedules and webhook triggers come with the paid plans, from $29 a month.

Once built, one call from your code

Once you have built a method, it is one POST to /v1/runs from your backend, or a tool an AI agent calls over MCP. This is what “Get backorders” would look like.

curl https://api.fous.com/v1/runs \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "method": "store.mwiah.com/get_backorders",
    "input": {
      "available_only": false
    }
  }'

{
  "status": "completed",
  "data": {
    "backorders": [
      {
        "product": "Carprofen chewable tablets, 75 mg, 180 count",
        "item_number": "041237",
        "quantity": 2,
        "expected_availability_date": "2026-11-19",
        "available_now": false
      }
    ],
    "count": 1
  }
}

An example with invented data, not a ready-made endpoint. The method exists in your organization once you build it, and its name, inputs and fields follow your request.

MWI’s own options

MWI's own pages describe no public API for practices. MWI lists automated integrations between its online store and named practice management and procurement systems, which you get through that software. Otherwise you order, follow backorders and download your Lists in the online store or the MWI mobile app.

Read on November 12, 2026: Workflow solutions: third-party integrations, Personalized e-commerce store, MWI mobile app.

Signing in to MWI

The MWI online store signs you in with a username and password, and the same login opens the MWI mobile app. Online access is requested separately for an existing MWI account. With Fous you sign in once through MWI's own sign-in with your own account: the login is sealed with AES-256, and an expired session is signed back in.

Worth knowing

Online access is a separate request

Opening an MWI account and getting online access are two steps. If your practice already has an account, you use Request online access before anyone can sign in to the store.

Backorders carry a date, not a promise

Each backorder shows an expected availability date. When the product is available again, the store lets you add it to your current cart, so a check for available backorders belongs in your morning routine.

Consolidated deliveries can move your cutoff

With tote order consolidation, deliveries come on your dedicated delivery day or days, and your order cutoff time may change for those days. Your sales representative gives you the current cutoff.

Lists are your inventory sheets

Lists can be organized by shelf, printed as inventory sheets with barcodes, and downloaded as Excel or PDF. A List is a fixed set of products, which makes it a stable thing to read on a schedule.

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