服務帳戶是一種特殊的 Google 帳戶，可供應用程式使用，透過 OAuth 2.0 以程式輔助方式存取 Google API。服務帳戶使用不需要其他授權的 OAuth 2.0 流程。而是使用只有您的應用程式可以存取的金鑰檔案。本指南將說明如何透過服務帳戶存取 Manufacturer Center API。
您現在可以透過 Google 應用程式預設憑證流程，或直接使用服務帳戶流程，透過服務帳戶存取 Manufacturer Center 帳戶。Manufacturer Center API 範例說明如何以每種支援的程式設計語言，將這兩種流程用於服務帳戶憑證。請參閱程式碼範例，瞭解如何試用新的服務帳戶，並瞭解必須在自己的程式碼中使用服務帳戶進行哪些變更。
常見問題
我可以使用服務帳戶登入 Manufacturer Center 網頁使用者介面嗎？
否，服務帳戶不是一般 Google 帳戶，無法存取 Manufacturer Center 網頁使用者介面。
需要多久更新一次服務帳戶存取權杖？
存取權杖由 Google OAuth 2.0 授權伺服器發出後一小時就會失效。存取權杖到期時，應用程式應使用用戶端程式庫擷取其他存取權杖。
[null,null,["上次更新時間：2025-08-31 (世界標準時間)。"],[[["\u003cp\u003eService accounts enable applications to programmatically access the Manufacturer Center API using OAuth 2.0 without user intervention.\u003c/p\u003e\n"],["\u003cp\u003eTo use a service account, generate service account credentials in Google Cloud Console, enable the Manufacturer Center API, and download the JSON key file.\u003c/p\u003e\n"],["\u003cp\u003eAdd the service account as a user to your Manufacturer Center account with the appropriate role for API access.\u003c/p\u003e\n"],["\u003cp\u003eAccess your Manufacturer Center account programmatically using Google Application Default Credentials or the service account flow, referencing the provided samples.\u003c/p\u003e\n"],["\u003cp\u003eService accounts cannot be used to log into the Manufacturer Center web user interface but solely for API interaction.\u003c/p\u003e\n"]]],[],null,["# Using OAuth 2.0 service accounts with the Manufacturer Center API\n\nService accounts are special Google accounts that can be used by applications to\naccess Google APIs programmatically via OAuth 2.0. A service account uses an\nOAuth 2.0 flow that does not require additional authorization. Instead, it uses\na key file that only your application can access. This guide discusses how to\naccess the Manufacturer Center API with service accounts.\n| **Note:** Applications using service accounts for authentication can only access your own Manufacturer Center account. If you are writing a third-party application that needs access to your clients' Manufacturer Center accounts, see the [Authorizing Requests](/manufacturers/how-tos/authorizing) guide instead.\n\nPrerequisites\n-------------\n\n- A [Manufacturer Center](//manufacturers.google.com/) account.\n\nSteps to using a service account to access the Manufacturer Center API\n----------------------------------------------------------------------\n\n1. Generate service-account credentials or access the public credentials you've\n already generated. You will need to create an OAuth 2.0 Client ID and obtain\n a \\*.json private key file:\n\n 1. Go to the [Google API Console](https://console.cloud.google.com/apis/library).\n\n 2. Select a project in the drop-down menu at the top of the page. If you do\n not have one yet, create one by clicking **Create Project**.\n\n 3. If you have not already enabled the Manufacturer Center API for this\n project, then search for it in the list of Google APIs and enable it.\n\n 4. In the sidebar on the left, select **Credentials**.\n\n 5. To set up a service account, select **Create credentials** , and then\n **Service account key**.\n\n 1. On the next page, select **New service account** from the drop-down\n list.\n\n 2. Name the new service account. This\n also serves as the default username for the service account ID. Remember\n the service account ID for use later.\n\n | **Note:** The choice of role for the service account will not have any effect on what calls can be made to the Manufacturer Center API, as access to Manufacturer Center API methods is determined instead by the role associated with the service account ID in Manufacturer Center. If you are unsure what to pick, just pick Project►Viewer.\n\n 1. Select **JSON** for the key type, then click **Create**.\n\n 2. The **Create** button will change to **Creating...**, and once the key\n generation finishes, it will automatically download the private key as a\n \\*.json file.\n\n | **Important:** Protect the \\*.json key file that allows a service account to access the Google services for which it has been authorized. It is good practice to allow service accounts to only access one Google API each. This is a preventative measure to mitigate the amount of data an attacker can access in the situation that the service account's \\*.json key file is compromised.\n 1. You will be returned to the Credentials page, and you should see the new service account in the list of service account keys for your account.\n2. Add the new service account as a user to your Manufacturer Center account.\n If you are a third party developer, you will need to have your client do\n this step for you.\n\n 1. Go to your [Manufacturer Center account](//manufacturers.google.com/).\n\n 2. Go to the 'Users' list in the settings of your Manufacturer Center\n account.\n\n 3. Click the +User button, and use the service account ID as the email\n address for the new user.\n\n 4. Fill in the form with the [service account ID](#service-account-name),\n and select the desired user role(s). At least one must be chosen, and\n use of the `Accounts` service requires the Admin role.\n\n If you did not take note of the service account ID earlier, go to the\n [Service Accounts](https://console.developers.google.com/iam-admin/serviceaccounts/)\n administration page and select the project you created.\n\n 1. Click on the **Save** button. You will be returned to the list of users,\n and the service account ID should be listed with the chosen user role(s).\n\n 2. Repeat the process for all other service accounts you want to add.\n\n 3. View existing service account users by going to the Users tab. These\n will be users with an email address ending in 'gserviceaccount.com'.\n\n3. Now you can access your Manufacturer Center account using the service\n account either by using the [Google Application Default\n Credentials](/identity/protocols/application-default-credentials) flow or by\n using the [service account flow](/identity/protocols/OAuth2ServiceAccount)\n directly. The Manufacturer Center API [Samples](/manufacturers/libraries)\n show how to use both flows for service account credentials in each supported\n programming language. See the code samples to try out your new service\n account and to learn what changes you will need to use service accounts in\n your own code.\n\nFrequently asked questions\n--------------------------\n\n#### Can I log into the Manufacturer Center web user interface with my service account?\n\nNo, service accounts are not regular Google accounts and cannot access the\nManufacturer Center web user interface.\n\n#### How often do I need to refresh service account access tokens?\n\nAccess tokens expire one hour after they are issued by the Google OAuth 2.0\nAuthorization Server. When an access token expires, the application should use\nthe client library to fetch another access token."]]
