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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."],[[["The latest available version of the reCAPTCHA Enterprise API C++ Client Library is 2.37.0-rc, with 2.36.0 being the current documented version."],["This C++ client library provides an interface to the reCAPTCHA Enterprise API, allowing for the protection of websites from spam and fraudulent activity."],["The library does not adhere to Semantic Versioning, despite being in General Availability (GA)."],["`RecaptchaEnterpriseServiceClient` is the primary class, encapsulating all Remote Procedure Calls (RPCs) as its member functions."],["The library offers ways to customize its behavior, including overriding the default endpoint, authentication credentials, and retry policies, alongside the ability to use environment variables."]]],[]]
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