Turn your Squarespace site into an API

What you can build on Squarespace

• Get orders

  Build this

  Reads Orders in the Products & Services panel for the status you pick, with each order's details.

  Takes

  Status (Pending, Fulfilled or Canceled), placed since (optional)

  Returns

  Order number, date, customer, email, items, quantities, subtotal, shipping, tax, order total, shipping to, status

• Get form submitters

  Build this

  Reads Form Submitters in the Contacts panel's Lists & Segments, with each submitter's Form Details.

  Takes

  Form name (optional), submitted since (optional)

  Returns

  Name, email, submitted date, form name, the form's fields and answers

• Check stock levels

  Build this

  Reads the Products panel with each product's variants opened: the Price and Stock of every variant, optionally only what is running low.

  Takes

  Product name (optional), stock below (optional)

  Returns

  Product, variant, price, stock

• Mark an order fulfilled

  Build this

  Opens a pending order in Orders, selects Mark as Fulfilled, adds the tracking number and carrier, and confirms.

  Takes

  Order number, tracking number, carrier, email the customer or not

  Returns

  Order number, status, tracking number, carrier

Automate Squarespace 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 pending orders, every morning

  Build this

  Starts

  Every weekday at 8:00

  Step 1

  Get the orders in Pending status.

  Step 2

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

  Step 3

  Email you the list with order number, customer, items and order total.

• New form submitters, sent to your CRM

  Build this

  Starts

  Every hour

  Step 1

  Get the Form Submitters from the Contacts panel, with their Form Details.

  Step 2

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

  Step 3

  Post each one, with name, email, form name and answers, to your CRM webhook.

• Low stock report

  Build this

  Starts

  Every day at 7:00

  Step 1

  Check stock levels in the Products panel for every variant.

  Step 2

  Keep the variants with fewer than 5 in stock, and stop when there are none.

  Step 3

  Email you the list with product, variant, price and stock.

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 orders” would look like.

curl https://api.fous.com/v1/runs \
  -H "Authorization: Bearer $FOUS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "method": "account.squarespace.com/get_orders",
    "input": {
      "status": "Pending",
      "placed_since": "2026-11-10"
    }
  }'

{
  "status": "completed",
  "data": {
    "orders": [
      {
        "order_number": "1042",
        "date": "2026-11-11",
        "customer": "Acme Studio",
        "email": "orders@acme.example",
        "items": [
          {
            "item": "Linen apron, Charcoal",
            "quantity": 2
          }
        ],
        "subtotal": 64,
        "shipping": 8.5,
        "tax": 5.12,
        "order_total": 77.62,
        "shipping_to": "Portland, OR, United States",
        "status": "Pending"
      }
    ],
    "count": 1,
    "currency": "USD"
  }
}

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.

Squarespace’s own options

Squarespace offers API keys for its Commerce APIs and a read-only Forms API. A key reads or writes orders, inventory, products, transactions, contacts or discounts for the one site that made it, and the help centre lists the Orders, Inventory and Transactions APIs on the Core, Plus and Advanced plans.

Read on November 12, 2026: Squarespace API keys, Authentication and permissions, Managing form and newsletter storage.

Signing in to Squarespace

Squarespace signs you in with an email address and password, or with an Apple, Facebook or Google account. Two-factor authentication, when it is on, uses a passkey, an authenticator app or a text message. With Fous you sign in once through Squarespace's own 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

Tracking numbers cannot be edited

To change one, you move the order back to Pending and fulfill it again. Moving an order back does not unsend the fulfillment email the customer already received.

Form Submitters need an email field

A form block stores submitters in the Contacts panel only when it has a required email address field. Submissions from before July 21, 2023 are not in the Contacts panel.

Some orders fulfill themselves

Digital downloads, gift cards and subscriptions are fulfilled automatically at checkout. An order split across fulfillment profiles is fulfilled separately for each profile.

Use a contributor with the right role

Store managers can manage orders and products without full access. Only the owner and administrators can invite contributors or change their permissions.

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