Turn Basware Portal into an API

What you can build on Basware Portal

• Get sent invoices and their status

  Build this

  Reads the Sent tab of the Documents page, filtered to invoices, with each invoice's status and last update.

  Takes

  Recipient (optional), status (optional), invoice date from (optional)

  Returns

  Invoice number, recipient, invoice date, due date, total, currency, status, last updated

• Get received purchase orders

  Build this

  Reads the purchase orders on the Inbox tab of the Documents page and opens each one for its Line Data.

  Takes

  Buyer (optional), status (optional), received since (optional)

  Returns

  PO number, buyer, status, last updated, lines with product code, name, quantity, unit, unit price, net total

• Get a document's history

  Build this

  Opens one invoice or purchase order and reads its History tab: when it was sent, accepted and paid.

  Takes

  Document number

  Returns

  Document number, type, status, history events with date and description

• Accept a purchase order

  Build this

  Opens a purchase order from the Documents page, clicks Accept, adds Comments to buyer and confirms, so the order moves to Accepted.

  Takes

  PO number, comments to buyer (optional)

  Returns

  PO number, buyer, status

Automate Basware Portal 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.

• New purchase orders in the Inbox, every morning

  Build this

  Starts

  Every weekday at 7:00

  Step 1

  Get the received purchase orders from the Inbox tab.

  Step 2

  Keep the purchase orders that were not there on the last run.

  Step 3

  Email you the list with PO number, buyer and line items.

• Invoices stuck in Delivery Delayed or rejected

  Build this

  Starts

  Every weekday at 9:00

  Step 1

  Get the sent invoices with status Delivery Delayed or Rejected during Delivery.

  Step 2

  Keep the invoices whose status changed since the last run.

  Step 3

  Post invoice number, recipient, total and status to your Slack or ERP webhook.

• Weekly invoice status report for accounting

  Build this

  Starts

  Every Monday at 8:00

  Step 1

  Get the invoices sent in the last 30 days with their status.

  Step 2

  For each invoice, read its History for accepted and paid dates.

  Step 3

  Post the list to your accounting system's webhook.

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 sent invoices and their status” would look like.

curl https://api.fous.com/v1/runs \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "method": "portal.basware.com/get_sent_invoices",
    "input": {
      "status": "Delivery Delayed",
      "invoice_date_from": "2026-10-01"
    }
  }'

{
  "status": "completed",
  "data": {
    "invoices": [
      {
        "invoice_number": "INV-20417",
        "recipient": "Acme Manufacturing",
        "invoice_date": "2026-11-06",
        "due_date": "2026-12-06",
        "total": 4820.5,
        "currency": "EUR",
        "status": "Delivery Delayed",
        "last_updated": "2026-11-10T08:14:00Z"
      }
    ],
    "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.

Basware Portal’s own options

Basware Network has an API for sending and receiving e-invoices: you test it in a free sandbox account from Basware Support, and production use needs a subscription to one of Basware's services. For suppliers, Invoice Key-In is a free service the customer provides, and the optional PO Flip turns purchase orders into invoices.

Read on November 12, 2026: Basware Network API: get started, Basware for suppliers, Invoice Key-In and PO Flip user guide.

Signing in to Basware Portal

Basware's user guide has you log in at portal.basware.com with your Username and Password, and log out from the menu under your username. With Fous you sign in once through that same sign-in with your own account: the login is sealed with AES-256, code and AI agents never see it, and an expired session is signed back in.

Worth knowing

The Documents page shows 30 days by default

Searches show documents sent and received in the last 30 days until you close the Date Range pane, so a method that reads older invoices takes a date as an input.

Accept a purchase order before invoicing it

Only a purchase order in Accepted status can be converted with Convert to Invoice, and that needs the optional Invoice Key-In and PO Flip service.

Delivery Delayed for more than 24 hours

When a document stays in Delivery Delayed for more than 24 hours, Basware asks you to contact Basware Support. A daily check of your sent invoices shows you which ones.

Invoice data is not kept forever

Basware Network does not store invoice data indefinitely. Basware's guide tells you to download a copy of the document image from the Files tab and keep it yourself.

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