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Text of the page (random words):
ina français indonesia italiano português português brasil עברית 中文 简体 中文 繁體 日本語 한국어 sign in google cloud sdk authentication start free overview guides reference resources technology areas more overview guides reference resources cross product tools more console discover google cloud sdk overview gcloud cli overview cloud client libraries overview client libraries and cloud apis explained get started install the gcloud cli other installation methods using docker overview migrate to the stable image using a snap package using versioned archives using the installer using homebrew authenticate to google cloud authentication methods at google ways to authenticate authenticate for using client libraries authenticate for using rest authenticate by using service account impersonation application default credentials set up application default credentials overview local development environment resource with an attached service account containerized environment on premises or another cloud provider cloud based development environment how application default credentials works troubleshoot your adc setup api keys use api keys to access apis manage api keys best practices for managing api keys get an id token tokens overview token types 2 step verification requirement reauthentication authentication use cases identity management products configure the gcloud cli initialize the gcloud cli authenticate for the gcloud cli configure the gcloud cli for use behind a proxy or firewall manage gcloud cli configurations manage gcloud cli properties enable accessibility features develop gcloud cli cheat sheet scripting gcloud cli commands client libraries best practices manage packages in gcloud cli managing gcloud cli components uninstalling the gcloud cli ai and ml application development application hosting compute data analytics and pipelines databases distributed hybrid and multicloud industry solutions migration networking observability and monitoring security storage access and resources management costs and usage management infrastructure as code sdk languages frameworks and tools home documentation application development google cloud sdk authentication guides send feedback use api keys to access apis stay organized with collections save and categorize content based on your preferences this page describes how to use api keys to access google cloud apis and services that accept api keys not all google cloud apis accept api keys to authorize usage review the documentation for the service or api that you want to use to determine whether it accepts api keys for information about creating and managing api keys including restricting api keys see manage api keys for information about using api keys with google maps platform see the google maps platform documentation for more information about the api keys api see the api keys api documentation before you begin select the tab for how you plan to use the samples on this page c to use the net samples on this page in a local development environment install and initialize the gcloud cli and then set up application default credentials with your user credentials install the google cloud cli if you re using an external identity provider idp you must first sign in to the gcloud cli with your federated identity if you re using a local shell then create local authentication credentials for your user account gcloud auth application default login you don t need to do this if you re using cloud shell if an authentication error is returned and you are using an external identity provider idp confirm that you have signed in to the gcloud cli with your federated identity for more information see set up adc for a local development environment in the google cloud authentication documentation c to use the c samples on this page in a local development environment install and initialize the gcloud cli and then set up application default credentials with your user credentials install the google cloud cli if you re using an external identity provider idp you must first sign in to the gcloud cli with your federated identity if you re using a local shell then create local authentication credentials for your user account gcloud auth application default login you don t need to do this if you re using cloud shell if an authentication error is returned and you are using an external identity provider idp confirm that you have signed in to the gcloud cli with your federated identity for more information see set up adc for a local development environment in the google cloud authentication documentation go to use the go samples on this page in a local development environment install and initialize the gcloud cli and then set up application default credentials with your user credentials install the google cloud cli if you re using an external identity provider idp you must first sign in to the gcloud cli with your federated identity if you re using a local shell then create local authentication credentials for your user account gcloud auth application default login you don t need to do this if you re using cloud shell if an authentication error is returned and you are using an external identity provider idp confirm that you have signed in to the gcloud cli with your federated identity for more information see set up adc for a local development environment in the google cloud authentication documentation node js to use the node js samples on this page in a local development environment install and initialize the gcloud cli and then set up application default credentials with your user credentials install the google cloud cli if you re using an external identity provider idp you must first sign in to the gcloud cli with your federated identity if you re using a local shell then create local authentication credentials for your user account gcloud auth application default login you don t need to do this if you re using cloud shell if an authentication error is returned and you are using an external identity provider idp confirm that you have signed in to the gcloud cli with your federated identity for more information see set up adc for a local development environment in the google cloud authentication documentation python to use the python samples on this page in a local development environment install and initialize the gcloud cli and then set up application default credentials with your user credentials install the google cloud cli if you re using an external identity provider idp you must first sign in to the gcloud cli with your federated identity if you re using a local shell then create local authentication credentials for your user account gcloud auth application default login you don t need to do this if you re using cloud shell if an authentication error is returned and you are using an external identity provider idp confirm that you have signed in to the gcloud cli with your federated identity for more information see set up adc for a local development environment in the google cloud authentication documentation rest to use the rest api samples on this page in a local development environment you use the credentials you provide to the gcloud cli install the google cloud cli if you re using an external identity provider idp you must first sign in to the gcloud cli with your federated identity for more information see authenticate for using rest in the google cloud authentication documentation using an api key with rest to include an api key with a rest api call use the x goog api key http header as shown in the following example curl x post h x goog api key api_key h content type application json charset utf 8 d request json https translation googleapis com language translate v2 if you can t use the http header you can use the key query parameter however this method includes your api key in the url exposing your key to theft through url scans the following example shows how to use the key query parameter with a cloud natural language api request for documents analyzeentities replace api_key with the key string of your api key post https language googleapis com v1 documents analyzeentities key api_key using an api key with client libraries this example uses the cloud natural language api which accepts api keys to demonstrate how you would provide an api key to the library c to run this sample you must install the natural language client library using google cloud language v1 using system public class useapikeysample public void analyzesentiment string apikey languageserviceclient client new languageserviceclientbuilder apikey apikey build string text hello world analyzesentimentresponse response client analyzesentiment document fromplaintext text console writeline text text sentiment sentiment response documentsentiment console writeline sentiment sentiment score sentiment magnitude console writeline successfully authenticated using the api key c to run this sample you must install the natural language client library include google cloud language v1 language_client h include google cloud credentials h include google cloud options h void authenticatewithapikey std vector std string const argv if argv size 2 throw google cloud testing_util usage authenticate with api key project id api key namespace gc google cloud auto options gc options set gc unifiedcredentialsoption gc makeapikeycredentials argv 1 auto client gc language_v1 languageserviceclient gc language_v1 makelanguageserviceconnection options auto constexpr ktext hello world google cloud language v1 document d d set_content ktext d set_type google cloud language v1 document plain_text auto response client analyzesentiment d if response throw std move response status auto const sentiment response document_sentiment std cout text ktext n std cout sentiment sentiment score sentiment magnitude n std cout successfully authenticated using the api key n go to run this sample you must install the natural language client library import context fmt io language cloud google com go language apiv1 cloud google com go language apiv1 languagepb google golang org api option authenticatewithapikey authenticates with an api key for google language service func authenticatewithapikey w io writer apikey string error apikey api key string ctx context background initialize the language service client and set the api key client err language newclient ctx option withapikey apikey if err nil return fmt errorf newclient w err defer client close text hello world make a request to analyze the sentiment of the text res err client analyzesentiment ctx languagepb analyzesentimentrequest document languagepb document source languagepb document_content content text type languagepb document_plain_text if err nil return fmt errorf analyzesentiment w err fmt fprintf w text s n text fmt fprintf w sentiment score v n res documentsentiment score fmt fprintln w successfully authenticated using the api key return nil node js to run this sample you must install the natural language client library const v1 languageserviceclient require google cloud language authenticates with an api key for google language service param string apikey an api key to use async function authenticatewithapikey apikey const language new languageserviceclient apikey alternatively const googleauth require google auth library const auth new googleauth apikey const language new languageserviceclient auth const text hello world const response await language analyzesentiment document content text type plain_text console log text text console log sentiment response documentsentiment score response documentsentiment magnitude console log successfully authenticated using the api key authenticatewithapikey python to run this sample you must install the natural language client library from google cloud import language_v1 def authenticate_with_api_key api_key_string str none authenticates with an api key for google language service todo developer replace this variable before running the sample args api_key_string the api key to authenticate to the service initialize the language service client and set the api key client language_v1 languageserviceclient client_options api_key api_key_string text hello world document language_v1 document content text type_ language_v1 document type plain_text make a request to analyze the sentiment of the text sentiment client analyze_sentiment request document document document_sentiment print f text text print f sentiment sentiment score sentiment magnitude print successfully authenticated using the api key ruby to run this sample you must install the natural language client library require googleauth require google cloud language v1 def authenticate_with_api_key api_key_string authenticates with an api key for google language service todo developer uncomment the following line and set the value before running this sample api_key_string mykey12345 note you can also set the api key via environment variable export google_api_key your api key and use google auth apikeycredentials from_env method to load it example credentials google auth apikeycredentials from_env if credentials nil puts no api key found in environment exit end initialize api key credentials using the class factory method credentials google auth apikeycredentials make_creds api_key api_key_string initialize the language service client with the api key credentials client google cloud language v1 languageservice client new do config config credentials credentials end create a document to analyze text hello world document content text type plain_text make a request to analyze the sentiment of the text sentiment client analyze_sentiment document document document_sentiment puts text text puts sentiment sentiment score sentiment magnitude puts successfully authenticated using the api key end when you use api keys in your applications ensure that they are kept secure during both storage and transmission publicly exposing your api keys can lead to unexpected charges on your account for more information see best practices for managing api keys what s next see an overview of authentication methods learn more about the api keys api send feedback except as otherwise noted the content of this page is licensed under the creative commons attribution 4 0 license and code samples are licensed under the apache 2 0 license for details see the google developers site policies java is a registered trademark of oracle and or its affiliates last updated 2026 07 17 utc need to tell us more easy to understand easytounderstand thumb up solved my problem solvedmyproblem thumb up other otherup thumb up hard to understand hardtounderstand thumb down incorrect information or sample code incorrectinformationorsamplecode thumb down missing the information samples i need missingtheinformationsamplesineed thumb down other otherdown thumb down last updated 2026 07 17 utc products and pricing see all products google cloud pricing google 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