API ReferenceEndpointsPublic API (v1)Add countries to a region

Add countries to a region

Adds countries to the region. A country can belong to one region only.

POST
/v1/regions/{regionId}/countries
AuthorizationBearer <token>

Admin API key (server-to-server). Issue via the dashboard at Settings → API keys. Plain-text key is shown once — store in a secret manager. Format: Authorization: Bearer brainerce_xxxxxxxxx.

In: header

Path Parameters

regionIdstring

Region ID

countriesarray<string>

ISO 3166-1 alpha-2 country codes to add to the region, case-insensitive. Added to the existing list; countries already in the region are kept. A country that belongs to another region of the store is rejected. At least one code is required.

Items1 <= items
curl -X POST "https://api.brainerce.com/api/v1/regions/string/countries" \  -H "Content-Type: application/json" \  -d '{    "countries": [      "DE",      "AT"    ]  }'
{
  "id": "clx1a2b3c4d5e6f7g8h9",
  "accountId": "clx1a2b3c4d5e6f7g8h9",
  "storeId": "clx1a2b3c4d5e6f7g8h9",
  "name": "Israel",
  "slug": "israel",
  "currency": "USD",
  "fxBufferPercent": "2.00",
  "countries": [
    "string"
  ],
  "provinces": {},
  "taxInclusive": true,
  "effectiveTaxInclusive": true,
  "automaticTaxes": true,
  "isDefault": true,
  "isActive": true,
  "metadata": {},
  "createdAt": "2019-08-24T14:15:22Z",
  "updatedAt": "2019-08-24T14:15:22Z",
  "paymentProviders": [
    {
      "id": "clx1a2b3c4d5e6f7g8h9",
      "regionId": "clx1a2b3c4d5e6f7g8h9",
      "appInstallationId": "clx1a2b3c4d5e6f7g8h9",
      "isEnabled": true,
      "createdAt": "2019-08-24T14:15:22Z"
    }
  ]
}

{
  "statusCode": 400,
  "code": "VALIDATION_FAILED",
  "message": "name should not be empty, price must be a positive number",
  "timestamp": "2026-08-23T10:15:00.000Z",
  "path": "/api/v1/regions/{regionId}/countries"
}

{
  "statusCode": 401,
  "code": "UNAUTHORIZED",
  "message": "Invalid or expired credential",
  "timestamp": "2026-08-23T10:15:00.000Z",
  "path": "/api/v1/products/bulk/{jobId}"
}

{
  "statusCode": 403,
  "code": "INSUFFICIENT_SCOPE",
  "message": "API key does not have the required scope: products:write",
  "timestamp": "2026-08-23T10:15:00.000Z",
  "path": "/api/v1/regions/{regionId}/countries"
}

{
  "statusCode": 404,
  "code": "RESOURCE_NOT_FOUND",
  "message": "Resource not found",
  "timestamp": "2026-08-23T10:15:00.000Z",
  "path": "/api/v1/regions/{regionId}/countries"
}

{
  "statusCode": 409,
  "code": "CONFLICT",
  "message": "The request conflicts with the current state of the resource",
  "timestamp": "2026-08-23T10:15:00.000Z",
  "path": "/api/v1/regions/{regionId}/countries"
}

{
  "statusCode": 429,
  "code": "RATE_LIMITED",
  "message": "Too many requests",
  "details": {
    "retryAfterSeconds": 12
  },
  "timestamp": "2026-08-23T10:15:00.000Z",
  "path": "/api/v1/store"
}