Note:
This documentation is for version2.5.0of the library.
Some samples may not work with other versions.
Installation
Install theGoogle.Cloud.RecaptchaEnterprise.V1package from NuGet. Add it to
your project in the normal way (for example by right-clicking on the
project in Visual Studio and choosing "Manage NuGet Packages...").
Authentication
When running on Google Cloud, no action needs to be taken to authenticate.
Otherwise, the simplest way of authenticating your API calls is to
download a service account JSON file then set theGOOGLE_APPLICATION_CREDENTIALSenvironment variable to refer to it.
The credentials will automatically be used to authenticate. See theGetting Started With
Authenticationguide for more details.
Create a client instance by calling the staticCreateorCreateAsyncmethods. Alternatively,
use the builder class associated with each client class (e.g. RecaptchaEnterpriseServiceClientBuilder for RecaptchaEnterpriseServiceClient)
as an easy way of specifying custom credentials, settings, or a custom endpoint. Clients are thread-safe,
and we recommend using a single instance across your entire application unless you have a particular need
to configure multiple client objects separately.
[[["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 2025-09-04 UTC."],[[["\u003cp\u003eThe \u003ccode\u003eGoogle.Cloud.RecaptchaEnterprise.V1\u003c/code\u003e library is a .NET client for interacting with the Google Cloud reCAPTCHA Enterprise API, and this documentation specifically covers version 2.5.0.\u003c/p\u003e\n"],["\u003cp\u003eVersion 2.17.0 is the latest available version of the library, with numerous prior releases such as 2.16.0, 2.15.0, and so forth down to 1.2.0, providing a range of options for users.\u003c/p\u003e\n"],["\u003cp\u003eInstallation of the library involves using NuGet to add the \u003ccode\u003eGoogle.Cloud.RecaptchaEnterprise.V1\u003c/code\u003e package to your .NET project, ensuring access to the reCAPTCHA API functionality.\u003c/p\u003e\n"],["\u003cp\u003eAuthentication is automatic when running on Google Cloud, but otherwise requires setting up a service account JSON file and the \u003ccode\u003eGOOGLE_APPLICATION_CREDENTIALS\u003c/code\u003e environment variable.\u003c/p\u003e\n"],["\u003cp\u003eAll interactions are handled via the \u003ccode\u003eRecaptchaEnterpriseServiceClient\u003c/code\u003e, and the instance can be built via the static \u003ccode\u003eCreate\u003c/code\u003e or \u003ccode\u003eCreateAsync\u003c/code\u003e methods, or via \u003ccode\u003eRecaptchaEnterpriseServiceClientBuilder\u003c/code\u003e, and you should only ever use one instance of the client.\u003c/p\u003e\n"]]],[],null,[]]
