Get your Sage Intacct bills and balances as JSON

What you can build on Intacct

• Get open bills

  Build this

  Reads the bills in Accounts Payable that are not yet paid, with each bill's vendor, due date, state and amount due.

  Takes

  Due by (optional), vendor ID (optional), state (optional)

  Returns

  Bill number, vendor ID, transaction date, due date, reference number, payment priority, on hold, state, amount due

• Get a trial balance

  Build this

  Reads the General Ledger trial balance between an opening and a closing balance date, for one reporting book and, if you name one, one location.

  Takes

  Start date, end date, reporting book (Accrual or Cash), location ID (optional)

  Returns

  Account number, account title, opening balance, debits, credits, closing balance

• Get unpaid customer invoices

  Build this

  Reads the invoices in Accounts Receivable that still have an amount due, with each invoice's customer, dates and state.

  Takes

  Customer ID (optional), due before (optional)

  Returns

  Invoice number, customer ID, transaction date, due date, reference number, state, amount due

• Save a vendor bill as a draft

  Build this

  Enters a new bill in Accounts Payable with its vendor, dates and lines, and saves it as a Draft so someone reviews it before it is submitted.

  Takes

  Vendor ID, transaction date, due date, reference number, lines (GL account, amount, memo)

  Returns

  Bill number, vendor ID, state, total

Automate Intacct 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.

• Bills due this week, grouped by vendor

  Build this

  Starts

  Every Monday at 7:00

  Step 1

  Get the open bills due within the next 7 days.

  Step 2

  Keep the bills that are not on hold.

  Step 3

  Email you the list grouped by vendor, with due date, payment priority and amount due.

• Last month's trial balance, per location, to your reports

  Build this

  Starts

  Monthly, on the 5th at 8:00

  Step 1

  For each location you name, get the trial balance for the previous month on the Accrual book.

  Step 2

  Post each location's accounts, with opening balance, debits, credits and closing balance, to your webhook.

• Newly overdue customer invoices

  Build this

  Starts

  Every weekday at 9:00

  Step 1

  Get the unpaid customer invoices due before today.

  Step 2

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

  Step 3

  Post each one, with customer ID, due date and amount due, to your Slack or ERP 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 open bills” would look like.

curl https://api.fous.com/v1/runs \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "method": "www.intacct.com/get_open_bills",
    "input": {
      "due_by": "2026-11-20",
      "state": "Posted"
    }
  }'

{
  "status": "completed",
  "data": {
    "bills": [
      {
        "bill_number": "BILL-2214",
        "vendor_id": "V-NORTHWIND",
        "transaction_date": "2026-11-02",
        "due_date": "2026-11-17",
        "reference_number": "NW-55810",
        "payment_priority": "normal",
        "on_hold": false,
        "state": "Posted",
        "amount_due": 4820
      }
    ],
    "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.

Intacct’s own options

Sage offers a REST API and an XML Web Services API it lists as legacy. It recommends the REST API for client applications and releases new objects and features there. Web Services needs a developer license with a sender ID, which you request from your Sage account manager and your company administrator authorizes. Sage's Web Services page lists no price for the license.

Read on November 12, 2026: Sage Intacct Web Services, Sage Intacct Developer, Custom reports (readReport).

Signing in to Intacct

Intacct's sign-in asks for a Company ID, User ID and Password, and also offers Use single sign-on and Log in with passkey. With Fous you sign in once through Intacct's own sign-in with your own user: the login is sealed with AES-256, never returned by the API or written to logs, and an expired session is signed back in.

Worth knowing

Web Services starts with a sender ID

Web Services needs a developer license that includes a sender ID. Your administrator enables the Web Services subscription in Company > Admin > Subscriptions and authorizes the sender ID for the company.

Keep each request small

Sage recommends querying fewer than 1,000 records and changing fewer than 100 records per request to avoid timeouts, and many requests at once may be held by the gateway.

Some bills get a new record number

A bill created from a Purchasing transaction, such as a Vendor Invoice, is deleted and recreated when that transaction is updated. Invoices from Order Entry behave the same way, so a record number can disappear.

Custom reports arrive in pages

A report run through readReport can come back as PENDING and is read page by page. When the last page is read, Intacct deletes the report, so it has to be run again.

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