Note:
This documentation is for version 2.6.0 of the library.
Some samples may not work with other versions.
Installation
Install the Google.Cloud.RecaptchaEnterprise.V1 package 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 the GOOGLE_APPLICATION_CREDENTIALS environment variable to refer to it.
The credentials will automatically be used to authenticate. See the Authentication
use cases guide for more details.
Create a client instance by calling the static Create or CreateAsync methods. 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"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[[["\u003cp\u003eThe latest version of the Google.Cloud.RecaptchaEnterprise.V1 library is 2.17.0, but the current documentation is specifically for version 2.6.0.\u003c/p\u003e\n"],["\u003cp\u003eThis is a .NET client library for the Google Cloud reCAPTCHA Enterprise API, allowing developers to integrate reCAPTCHA functionality into their applications.\u003c/p\u003e\n"],["\u003cp\u003eAuthentication when using Google Cloud services is automatic, but for other environments, setting the \u003ccode\u003eGOOGLE_APPLICATION_CREDENTIALS\u003c/code\u003e environment variable with a service account JSON file is recommended.\u003c/p\u003e\n"],["\u003cp\u003eThe primary interaction with the API is through the \u003ccode\u003eRecaptchaEnterpriseServiceClient\u003c/code\u003e class, which can be instantiated via the static \u003ccode\u003eCreate\u003c/code\u003e or \u003ccode\u003eCreateAsync\u003c/code\u003e methods or by using the builder class.\u003c/p\u003e\n"],["\u003cp\u003eThe Nuget package \u003ccode\u003eGoogle.Cloud.RecaptchaEnterprise.V1\u003c/code\u003e can be easily installed in visual studio.\u003c/p\u003e\n"]]],[],null,[]]
