Merchant API code sample to list accounts.

### C#

    // Copyright 2025 Google LLC
    //
    // Licensed under the Apache License, Version 2.0 (the "License");
    // you may not use this file except in compliance with the License.
    // You may obtain a copy of the License at
    //
    //     https://www.apache.org/licenses/LICENSE-2.0
    //
    // Unless required by applicable law or agreed to in writing, software
    // distributed under the License is distributed on an "AS IS" BASIS,
    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    // See the License for the specific language governing permissions and
    // limitations under the License.

    using System;
    using static MerchantApi.Authenticator;
    using Google.Api.Gax;
    using Google.Apis.Auth.OAuth2;
    using Google.Apis.Auth.OAuth2.Flows;
    using Google.Apis.Auth.OAuth2.Responses;
    using Google.Apis.Http;
    using Newtonsoft.Json;
    using Google.Shopping.Merchant.Accounts.V1;


    namespace MerchantApi
    {
        public class ListAccountsSample
        {
            public void ListAccounts()
            {
                Console.WriteLine("=================================================================");
                Console.WriteLine("Listing all Accounts the user has access to");
                Console.WriteLine("=================================================================");

                // Authenticate using either oAuth or service account
                ICredential auth = Authenticator.Authenticate(
                    MerchantConfig.Load(),
                    // Passing the default scope for Merchant API: https://www.googleapis.com/auth/content
                    AccountsServiceClient.DefaultScopes[0]);

                // Create client
                AccountsServiceSettings accountsServiceSettings = AccountsServiceSettings.GetDefault();

                // Create the AccountsServiceClient with the credentials
                AccountsServiceClientBuilder accountsServiceClientBuilder = new AccountsServiceClientBuilder
                {
                    Credential = auth
                };
                AccountsServiceClient client = accountsServiceClientBuilder.Build();

                // Initialize request argument(s)
                ListAccountsRequest request = new ListAccountsRequest
                {
                    PageSize = 1000, // Optional: specify the maximum number of accounts to return per page
                };

                // List all accounts the user has access to
                PagedEnumerable<ListAccountsResponse, Account> response = client.ListAccounts(request);

                // Print the paginated results. This automatically handles pagination
                // and retrieves all accounts in the account.
                foreach (ListAccountsResponse page in response.AsRawResponses())
                {

                    Console.WriteLine("A page of results:");
                    foreach (Account item in page)
                    {
                        // Pretty print the accounts
                        Console.WriteLine(JsonConvert.SerializeObject(item, Formatting.Indented));

                    }
                }
            }


            internal static void Main(string[] args)
            {
                var sample = new ListAccountsSample();
                sample.ListAccounts();
            }
        }
    }

### AppsScript

    // Copyright 2025 Google LLC
    //
    // Licensed under the Apache License, Version 2.0 (the "License");
    // you may not use this file except in compliance with the License.
    // You may obtain a copy of the License at
    //
    //     https://www.apache.org/licenses/LICENSE-2.0
    //
    // Unless required by applicable law or agreed to in writing, software
    // distributed under the License is distributed on an "AS IS" BASIS,
    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    // See the License for the specific language governing permissions and
    // limitations under the License.


    /**
     * Lists all accounts for which the logged-in user has access to
     */
    function listAccounts() {
      // IMPORTANT:
      // Enable the Merchant API Accounts sub-API Advanced Service and call it
      // "MerchantApiAccounts"

      try {
        console.log('Sending list Accounts request');
        let pageToken;
        const pageSize = 500;
        // Call the Accounts.list API method. Use the pageToken to iterate through
        // all pages of results.
        do {
          const response =
              MerchantApiAccounts.Accounts.list({pageSize, pageToken});
          for (const account of response.accounts) {
            console.log(account);
          }
          pageToken = response.nextPageToken;
        } while (pageToken); // Exits when there is no next page token.
      } catch (e) {
        console.log('ERROR!');
        console.log(e);
      }
    }

### Java

    // Copyright 2024 Google LLC
    //
    // Licensed under the Apache License, Version 2.0 (the "License");
    // you may not use this file except in compliance with the License.
    // You may obtain a copy of the License at
    //
    //     https://www.apache.org/licenses/LICENSE-2.0
    //
    // Unless required by applicable law or agreed to in writing, software
    // distributed under the License is distributed on an "AS IS" BASIS,
    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    // See the License for the specific language governing permissions and
    // limitations under the License.

    package shopping.merchant.samples.accounts.accounts.v1;

    import com.google.api.gax.core.FixedCredentialsProvider;
    import com.google.auth.oauth2.GoogleCredentials;
    import com.google.shopping.merchant.accounts.v1.Account;
    import com.google.shopping.merchant.accounts.v1.AccountsServiceClient;
    import com.google.shopping.merchant.accounts.v1.AccountsServiceClient.ListAccountsPagedResponse;
    import com.google.shopping.merchant.accounts.v1.AccountsServiceSettings;
    import com.google.shopping.merchant.accounts.v1.ListAccountsRequest;
    import shopping.merchant.samples.utils.Authenticator;
    import shopping.merchant.samples.utils.Config;

    /**
     * This class demonstrates how to list all the accounts the user making the request has access to.
     * Please note that "listAccounts" method charge API quota on behalf of each specific user running the
     * request. "listSubAccounts" method is more suitable to list large number of sub-accounts.
     */
    public class ListAccountsSample {

      public static void listAccounts(Config config) throws Exception {

        // Obtains OAuth token based on the user's configuration.
        GoogleCredentials credential = new Authenticator().authenticate();

        // Creates service settings using the credentials retrieved above.
        AccountsServiceSettings accountsServiceSettings =
            AccountsServiceSettings.newBuilder()
                .setCredentialsProvider(FixedCredentialsProvider.create(credential))
                .build();

        // Calls the API and propagates any network failures/errors.
        try (AccountsServiceClient accountsServiceClient =
            AccountsServiceClient.create(accountsServiceSettings)) {

          ListAccountsRequest request = ListAccountsRequest.newBuilder().build();

          System.out.println("Sending list accounts request:");
          ListAccountsPagedResponse response = accountsServiceClient.listAccounts(request);

          int count = 0;

          // Iterates over all rows in all pages and prints the datasource in each row.
          // Automatically uses the `nextPageToken` if returned to fetch all pages of data.
          for (Account account : response.iterateAll()) {
            System.out.println(account);
            count++;
          }
          System.out.print("The following count of accounts were returned: ");
          System.out.println(count);
        }
      }

      public static void main(String[] args) throws Exception {
        Config config = Config.load();
        listAccounts(config);
      }
    }

### Node.js

    // Copyright 2025 Google LLC
    //
    // Licensed under the Apache License, Version 2.0 (the "License");
    // you may not use this file except in compliance with the License.
    // You may obtain a copy of the License at
    //
    //     https://www.apache.org/licenses/LICENSE-2.0
    //
    // Unless required by applicable law or agreed to in writing, software
    // distributed under the License is distributed on an "AS IS" BASIS,
    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    // See the License for the specific language governing permissions and
    // limitations under the License.

    'use strict';
    const authUtils = require('../../../authentication/authenticate.js');
    const {AccountsServiceClient} = require('@google-shopping/accounts').v1;

    /**
     * Lists all Merchant Center accounts accessible by the authenticated user.
     * Please note that "listAccounts" method charge API quota on behalf of each
     * specific user running the request. "listSubAccounts" method is more suitable
     * to list large number of sub-accounts.
     */
    async function listAccounts() {
      try {
        // Retrieve authenticated credentials for the API call.
        const authClient = await authUtils.getOrGenerateUserCredentials();

        // Create an options object containing the authenticated client.
        const options = {authClient};

        // Initialize the Accounts API client.
        const accountsClient = new AccountsServiceClient(options);

        // Construct the request to list accounts. No parameters are needed to list
        // all accessible accounts.
        const request = {};

        console.log('Sending list accounts request...');
        // Call the API method to list accounts. This returns an async iterable.
        const iterable = accountsClient.listAccountsAsync(request);

        let count = 0;
        // Iterate asynchronously over all the accounts returned in the response.
        for await (const account of iterable) {
          // Print the details of each account.
          console.log(account);
          count++;
        }
        // Print the total number of accounts found.
        console.log(`Found ${count} accounts.`);
      } catch (error) {
        // Log any errors encountered during the process.
        console.error(`Failed to list accounts: ${error.message}`);
      }
    }

    // Execute the function to list accounts.
    listAccounts();

### PHP

    <?php
    /**
     * Copyright 2025 Google LLC
     *
     * Licensed under the Apache License, Version 2.0 (the "License");
     * you may not use this file except in compliance with the License.
     * You may obtain a copy of the License at
     *
     *     https://www.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing, software
     * distributed under the License is distributed on an "AS IS" BASIS,
     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     * See the License for the specific language governing permissions and
     * limitations under the License.
     */
    require_once __DIR__ . '/../../../../vendor/autoload.php';
    require_once __DIR__ . '/../../../Authentication/Authentication.php';
    require_once __DIR__ . '/../../../Authentication/Config.php';
    use Google\ApiCore\ApiException;
    use Google\Shopping\Merchant\Accounts\V1\Client\AccountsServiceClient;
    use Google\Shopping\Merchant\Accounts\V1\ListAccountsRequest;


    /**
     * This class demonstrates how to list all the accounts the user making the request has access to.
     * Please note that "listAccounts" method charge API quota on behalf of each specific 
     * user running the request. "listSubAccounts" method is more suitable to list 
     * large number of sub-accounts.
     */
    class ListAccounts
    {
        public static function listAccounts(array $config): void
        {
            // Gets the OAuth credentials to make the request.
            $credentials = Authentication::useServiceAccountOrTokenFile();

            // Creates options config containing credentials for the client to use.
            $options = ['credentials' => $credentials];

            // Creates a client.
            $accountsServiceClient = new AccountsServiceClient($options);

            // Calls the API and catches and prints any network failures/errors.
            try {

                $request = new ListAccountsRequest();

                print "Sending list accounts request:\n";
                $response = $accountsServiceClient->listAccounts($request);

                $count = 0;

                // Iterates over all rows in all pages and prints the datasource in each row.
                // Automatically uses the `nextPageToken` if returned to fetch all pages of data.
                foreach ($response->iterateAllElements() as $account) {
                    print_r($account);
                    $count++;
                }
                print "The following count of accounts were returned: ";
                print $count . PHP_EOL;
            } catch (ApiException $e) {
                print "An error has occured: \n";
                print $e->getMessage();
            }
        }

        public function callSample(): void
        {
            $config = Config::generateConfig();
            self::listAccounts($config);
        }
    }

    $sample = new ListAccounts();
    $sample->callSample();

### Python

    # -*- coding: utf-8 -*-
    # Copyright 2024 Google LLC
    #
    # Licensed under the Apache License, Version 2.0 (the "License");
    # you may not use this file except in compliance with the License.
    # You may obtain a copy of the License at
    #
    #     http://www.apache.org/licenses/LICENSE-2.0
    #
    # Unless required by applicable law or agreed to in writing, software
    # distributed under the License is distributed on an "AS IS" BASIS,
    # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    # See the License for the specific language governing permissions and
    # limitations under the License.
    """A module to list all the accounts the user making the request has access to."""

    from examples.authentication import generate_user_credentials
    from google.shopping.merchant_accounts_v1 import AccountsServiceClient
    from google.shopping.merchant_accounts_v1 import ListAccountsRequest


    def list_accounts():
      """Lists all the accounts the user making the request has access to.

      Please note that "list_accounts" method charge API quota on behalf of each
      specific user running the request. "list_sub_accounts" method is more suitable
      to list large number of sub-accounts.

      Returns:
        The ListAccountsPager response containing the accessible accounts.
      """

      # Get OAuth credentials.
      credentials = generate_user_credentials.main()

      # Create a client.
      client = AccountsServiceClient(credentials=credentials)

      # Create the request.
      request = ListAccountsRequest()

      # Make the request and print the response.
      try:
        print("Sending list accounts request:")
        response = client.list_accounts(request=request)

        count = 0
        for account in response:
          print(account)
          count += 1
        print(f"The following count of accounts were returned: {count}")
        return response

      except RuntimeError as e:
        print("An error has occured: ")
        print(e)
        raise


    if __name__ == "__main__":
      list_accounts()