# Update authentication settings

`PATCH https://api.cademi.com.br/api/v3/settings/authentication`

Operation ID: `settings.authentication.update` · API v3

Updates the authentication settings. Only the fields included in the request are changed: setting a field to `null` clears its configured value and restores the default, and omitted fields are left unchanged. Images are referenced by the ID of a file that belongs to the account.

Secrets such as `recaptcha.secret` and `google_login.client_secret` are write-only. Changes take effect at the next login; active sessions are not terminated.

To avoid overwriting a newer version, send the `ETag` returned by the retrieve operation in the `If-Match` header. The header is optional; when it is omitted, the update is applied to the current revision.

Required permissions: `settings.update_security`.

## Parameters

| Name | In | Type | Required | Description |
|---|---|---|---|---|
| `If-Match` | header | string | no |  |

## Request body

Content type: `application/json`.

Schema: object.

## Responses

### 200

Returns the updated authentication settings.

Body: `data`: SettingsAuthentication.

Fields of SettingsAuthentication:

| Field | Type | Required | Description |
|---|---|---|---|
| `access_screens` | object | yes |  |
| `admin_two_factor_available` | boolean | yes |  |
| `defaults` | object | yes |  |
| `effects` | object | yes |  |
| `google_login` | object | yes |  |
| `max_devices` | integer | yes |  |
| `object` | string, one of `settings` | yes |  |
| `password` | object | yes |  |
| `propagation` | object | yes |  |
| `recaptcha` | object | yes |  |
| `replica` | object | yes |  |
| `revision` | string | yes |  |

### 401

The credential is missing, malformed, expired, or revoked.

Body: Error.

### 403

The current credentials do not have the permission required by this operation.

Body: Error.

### 412

The authentication settings have changed since the supplied revision was retrieved.

Body: Error.

### 422

The request body or query parameters failed validation.

Body: ValidationFailed.

Full schema: https://cademi.dev/openapi/v3.json