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An idiomatic C++ client library for the reCAPTCHA Enterprise API. This service helps protect your website from fraudulent activity, spam, and abuse without creating friction.
While this library is GA, please note that the Google Cloud C++ client libraries do not follow Semantic Versioning.
QuickstartThe following shows the code that you'll run in the google/cloud/recaptchaenterprise/quickstart/
directory, which should give you a taste of the reCAPTCHA Enterprise API C++ client library API.
#include "google/cloud/recaptchaenterprise/v1/recaptcha_enterprise_client.h"
#include "google/cloud/project.h"
#include <iostream>
int main(int argc, char* argv[]) try {
if (argc != 2) {
std::cerr << "Usage: " << argv[0] << " project-id\n";
return 1;
}
namespace recaptchaenterprise = ::google::cloud::recaptchaenterprise_v1;
auto client = recaptchaenterprise::RecaptchaEnterpriseServiceClient(
recaptchaenterprise::MakeRecaptchaEnterpriseServiceConnection());
auto const project = google::cloud::Project(argv[1]);
for (auto r : client.ListKeys(project.FullName())) {
if (!r) throw std::move(r).status();
std::cout << r->DebugString() << "\n";
}
return 0;
} catch (google::cloud::Status const& status) {
std::cerr << "google::cloud::Status thrown: " << status << "\n";
return 1;
}
Main classes
The main class in this library is recaptchaenterprise_v1::RecaptchaEnterpriseServiceClient
. All RPCs are exposed as member functions of this class. Other classes provide helpers, configuration parameters, and infrastructure to mock recaptchaenterprise_v1::RecaptchaEnterpriseServiceClient
when testing your application.
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 2025-08-14 UTC.
[[["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 2025-08-14 UTC."],[[["This webpage details the C++ client library for the reCAPTCHA Enterprise API, designed to protect websites from fraudulent activity, spam, and abuse."],["The latest release candidate version for the reCAPTCHA Enterprise C++ Client Library is 2.37.0-rc, with the current version shown being 2.15.1 and a full list of available versions provided for download."],["The library is generally available (GA), but it's important to note that it does not adhere to Semantic Versioning guidelines."],["The `recaptchaenterprise_v1::RecaptchaEnterpriseServiceClient` is the primary class, exposing all Remote Procedure Calls (RPCs) as its member functions, as shown in the quickstart example."],["The webpage provides additional information on topics such as error handling, overriding the default endpoint, altering authentication credentials, and adjusting retry policies, as well as the environment variables associated with this library."]]],[]]
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