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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;
}
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 page details the C++ client library for the reCAPTCHA Enterprise API, designed to protect websites from fraud, spam, and abuse without creating user friction."],["The library is generally available (GA), however, it does not adhere to Semantic Versioning."],["The latest release candidate is version 2.37.0-rc, and the page also includes a list of past versions from 2.36.0 down to 2.12.0, allowing you to reference the specific version you are working with."],["The primary class within this library is `recaptchaenterprise_v1::RecaptchaEnterpriseServiceClient`, which hosts all Remote Procedure Calls (RPCs)."],["The provided code snippet demonstrates how to get started with the API, showing how to create a client and list keys for a given project, giving a sense of how the API is used."]]],[]]
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