> ## 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.

# Update Merchant Settings

> Updates the merchant-level settings for a Square-hosted checkout page.

`square.updateMerchantSettings` updates the merchant-level settings for a Square-hosted checkout page.

## Example

```ts automations/square-update-merchant-settings.automation.ts theme={null}
import { automation, onDashboardRun } from "automate.ax"
import { square } from "automate.ax/square"

export default automation("Update Square Merchant Settings", () => {
  onDashboardRun({ title: "Update Square Merchant Settings" })

  square.updateMerchantSettings({
    merchantSettings: {},
  })
})
```

## Inputs

Every input accepts a compatible signal. It requires `MERCHANT_PROFILE_READ` and `MERCHANT_PROFILE_WRITE` and `PAYMENT_METHODS_READ`.

| Field              | Type                              | Required | Default | Description                                                                                                          |
| ------------------ | --------------------------------- | -------- | ------- | -------------------------------------------------------------------------------------------------------------------- |
| `merchantSettings` | `Square.CheckoutMerchantSettings` | Yes      | —       | Describe your updates using the `merchant_settings` object. Make sure it contains only the fields that have changed. |

Use the official [UpdateMerchantSettings reference](https://developer.squareup.com/reference/square/checkout-api/update-merchant-settings) for provider field semantics and limits.

## Output

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