> ## Documentation Index
> Fetch the complete documentation index at: https://docs.automate.ax/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Automate.ax automations are TypeScript programs.
> Use Bun for installation and command examples.
> Use Automate.ax for the product name and automate.ax for the package, CLI, and domain.
> Treat documented public APIs as current; do not invent transitional or deprecated names.

# Add Group To Customer

> Adds a group membership to a customer.

`square.addGroupToCustomer` adds a group membership to a customer.

## Example

```ts automations/square-add-group-to-customer.automation.ts theme={null}
import { automation, onDashboardRun } from "automate.ax"
import { square } from "automate.ax/square"

export default automation("Add Square Group To Customer", () => {
  onDashboardRun({ title: "Add Square Group To Customer" })

  square.addGroupToCustomer({
    customerId: "customer_id",
    groupId: "group_id",
  })
})
```

## Inputs

Every input accepts a compatible signal. It requires `CUSTOMERS_WRITE`.

| Field        | Type     | Required | Default | Description                                          |
| ------------ | -------- | -------- | ------- | ---------------------------------------------------- |
| `customerId` | `string` | Yes      | —       | The ID of the customer to add to a group.            |
| `groupId`    | `string` | Yes      | —       | The ID of the customer group to add the customer to. |

Use the official [AddGroupToCustomer reference](https://developer.squareup.com/reference/square/customers-api/add-group-to-customer) for provider field semantics and limits.

## Output

Returns the official `Square.AddGroupToCustomerResponse` response as a codec-safe object. Square integer money amounts remain `bigint` values.