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Requests to the Bid Manager API must use OAuth 2.0 for authentication.
This page explains how to generate the OAuth 2.0 credentials and use them to
authenticate your users.
You can create a new project, or use an existing one.
Create a new project
To create a project and activate the Bid Manager API, follow the steps in the
Google Cloud console.
Use an existing project
To activate the Bid Manager API for an existing project, complete the following
steps:
Open the API Library in the Google Cloud console. If prompted,
select a project or create a new one. The API Library lists all available
APIs, grouped by product family and popularity. The Bid Manager API is labeled
DoubleClick Bid Manager API.
If you don't see the API you want to activate in the list, use the search bar
to find it.
Select the API you want to activate, then click Enable.
If prompted, activate billing.
If prompted, accept the Terms of Service for the API.
Generate credentials
This section explains how to generate an OAuth 2.0 client ID to authenticate
your Bid Manager API requests, after you've chosen a project.
To create an OAuth 2.0 client ID to use with the installed application
flow, complete the following steps:
Open the Credentials page in the Google Cloud console.
Click Create Credentials > OAuth client ID.
Select an appropriate application type when prompted. The Java and Python
code snippets in the Bid Manager API developer guides are for a
Desktop app. The PHP code snippets are for a Web application.
Enter any additional required information. If this is your first time
creating a client ID, you can configure your consent screen by clicking
Configure consent screen. You won't get a prompt to configure your consent
screen again after you do it the first time, but you can update this
information at any time.
Click Create.
When you're done, you get an OAuth 2.0 client ID and client secret, which you
can download in JSON format and save for later use.
Configure the user consent screen
When you use OAuth 2.0 for authentication, your users are authenticated after
they agree to terms on a user consent screen.
To set up your project's consent screen, complete the following steps:
[null,null,["Last updated 2025-08-28 UTC."],[[["\u003cp\u003eThe Bid Manager API requires OAuth 2.0 for authentication, and this page guides you through generating and using necessary credentials.\u003c/p\u003e\n"],["\u003cp\u003eYou'll need to select or create a Google Cloud project and enable the Bid Manager API before generating credentials.\u003c/p\u003e\n"],["\u003cp\u003eGenerating credentials involves creating an OAuth 2.0 client ID through the Google Cloud console after selecting your project.\u003c/p\u003e\n"],["\u003cp\u003eEnsure you configure the user consent screen, where users will agree to terms before authentication is granted.\u003c/p\u003e\n"],["\u003cp\u003eOAuth 2.0 credentials are sensitive and should be downloaded directly from Google Cloud console and kept secure.\u003c/p\u003e\n"]]],[],null,["# Generate credentials\n\nRequests to the Bid Manager API must use [OAuth 2.0](/identity/protocols/oauth2) for authentication.\nThis page explains how to generate the OAuth 2.0 credentials and use them to\nauthenticate your users.\n\nChoose a project\n----------------\n\nOAuth 2.0 credentials are generated by a Google Cloud project. You need\nto [create or select a project in the Google Cloud console and enable the\nAPI](//console.cloud.google.com/start/api?id=doubleclickbidmanager.googleapis.com&credential=client_key).\n\nYou can create a new project, or use an existing one.\n\n### Create a new project\n\nTo create a project and activate the Bid Manager API, follow the steps in the\n[Google Cloud console](//console.cloud.google.com/start/api?id=doubleclickbidmanager.googleapis.com&credential=client_key).\n\n### Use an existing project\n\nTo activate the Bid Manager API for an existing project, complete the following\nsteps:\n\n1. [Open the API Library](//console.cloud.google.com/apis/library) in the Google Cloud console. If prompted, select a project or create a new one. The API Library lists all available APIs, grouped by product family and popularity. The Bid Manager API is labeled **DoubleClick Bid Manager API**.\n2. If you don't see the API you want to activate in the list, use the search bar to find it.\n3. Select the API you want to activate, then click **Enable**.\n4. If prompted, activate billing.\n5. If prompted, accept the Terms of Service for the API.\n\nGenerate credentials\n--------------------\n\nThis section explains how to generate an OAuth 2.0 client ID to authenticate\nyour Bid Manager API requests, after you've [chosen a project](#choose_a_project).\n\nTo create an OAuth 2.0 client ID to use with the [installed application\nflow](/identity/protocols/OAuth2InstalledApp), complete the following steps:\n\n1. Configure a [Google Cloud console project](#choose_a_project).\n2. Open the **Credentials** page in the Google Cloud console.\n3. Click **Create Credentials** \\\u003e **OAuth client ID**.\n4. Select an appropriate application type when prompted. The Java and Python code snippets in the Bid Manager API developer guides are for a **Desktop app** . The PHP code snippets are for a **Web application**.\n5. Enter any additional required information. If this is your first time creating a client ID, you can configure your consent screen by clicking **Configure consent screen**. You won't get a prompt to configure your consent screen again after you do it the first time, but you can update this information at any time.\n6. Click **Create**.\n\nWhen you're done, you get an OAuth 2.0 client ID and client secret, which you\ncan download in JSON format and save for later use.\n| **Warning:** OAuth credentials are sensitive information. You should download them directly from the Google Cloud console, and shouldn't share them.\n\nConfigure the user consent screen\n---------------------------------\n\nWhen you use OAuth 2.0 for authentication, your users are authenticated after\nthey agree to terms on a user consent screen.\n\nTo set up your project's consent screen, complete the following steps:\n\n1. Open the [OAuth consent screen page](//console.cloud.google.com/apis/credentials/consent) in the Google Cloud console. If prompted, [select a project or create a new one](#choose_a_project).\n2. Fill out the form, then click **Save**."]]