An idiomatic C++ client library forWeb Risk, a service to detect malicious URLs on your website and in client applications.
While this library isGA, please note Google Cloud C++ client libraries donotfollowSemantic Versioning.
Quickstart
The following shows the code that you'll run in thegoogle/cloud/webrisk/quickstart/directory, which should give you a taste of the Web Risk API C++ client library API.
#include "google/cloud/webrisk/v1/web_risk_client.h"
#include <iostream>
int main(int argc, char* argv[]) try {
if (argc > 2) {
std::cerr << "Usage: " << argv[0]
<< " [uri (default https://www.google.com)]\n";
return 1;
}
namespace webrisk = ::google::cloud::webrisk_v1;
auto client =
webrisk::WebRiskServiceClient(webrisk::MakeWebRiskServiceConnection());
auto const uri = std::string{argc == 2 ? argv[1] : "https://www.google.com/"};
auto const threat_types = {google::cloud::webrisk::v1::MALWARE,
google::cloud::webrisk::v1::UNWANTED_SOFTWARE};
auto response = client.SearchUris("https://www.google.com/", threat_types);
if (!response) throw std::move(response).status();
std::cout << response->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 iswebrisk_v1::WebRiskServiceClient. All RPCs are exposed as member functions of this class. Other classes provide helpers, configuration parameters, and infrastructure to mockwebrisk_v1::WebRiskServiceClientwhen testing your application.
More Information
Error Handling- describes how the library reports errors.
[[["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\u003eThis page details the C++ client library for Google's Web Risk API, a service designed to detect malicious URLs.\u003c/p\u003e\n"],["\u003cp\u003eThe latest release candidate is version 2.37.0-rc, with multiple stable versions available, including the current version 2.21.0.\u003c/p\u003e\n"],["\u003cp\u003eThe library allows for checking URLs against various threat types, such as malware and unwanted software, exemplified in the provided quickstart code.\u003c/p\u003e\n"],["\u003cp\u003eThe primary class is \u003ccode\u003ewebrisk_v1::WebRiskServiceClient\u003c/code\u003e, which exposes all RPCs as its member functions.\u003c/p\u003e\n"],["\u003cp\u003eThe documentation also covers error handling, endpoint and authentication credential overrides, retry policies, and relevant environment variables for library configuration.\u003c/p\u003e\n"]]],[],null,["Version 2.21.0keyboard_arrow_down\n\n- [2.42.0-rc (latest)](/cpp/docs/reference/webrisk/latest)\n- [2.41.0](/cpp/docs/reference/webrisk/2.41.0)\n- [2.40.0](/cpp/docs/reference/webrisk/2.40.0)\n- [2.39.0](/cpp/docs/reference/webrisk/2.39.0)\n- [2.38.0](/cpp/docs/reference/webrisk/2.38.0)\n- [2.37.0](/cpp/docs/reference/webrisk/2.37.0)\n- [2.36.0](/cpp/docs/reference/webrisk/2.36.0)\n- [2.35.0](/cpp/docs/reference/webrisk/2.35.0)\n- [2.34.0](/cpp/docs/reference/webrisk/2.34.0)\n- [2.33.0](/cpp/docs/reference/webrisk/2.33.0)\n- [2.32.0](/cpp/docs/reference/webrisk/2.32.0)\n- [2.31.0](/cpp/docs/reference/webrisk/2.31.0)\n- [2.30.0](/cpp/docs/reference/webrisk/2.30.0)\n- [2.29.0](/cpp/docs/reference/webrisk/2.29.0)\n- [2.28.0](/cpp/docs/reference/webrisk/2.28.0)\n- [2.27.0](/cpp/docs/reference/webrisk/2.27.0)\n- [2.26.0](/cpp/docs/reference/webrisk/2.26.0)\n- [2.25.1](/cpp/docs/reference/webrisk/2.25.1)\n- [2.24.0](/cpp/docs/reference/webrisk/2.24.0)\n- [2.23.0](/cpp/docs/reference/webrisk/2.23.0)\n- [2.22.1](/cpp/docs/reference/webrisk/2.22.1)\n- [2.21.0](/cpp/docs/reference/webrisk/2.21.0)\n- [2.20.0](/cpp/docs/reference/webrisk/2.20.0)\n- [2.19.0](/cpp/docs/reference/webrisk/2.19.0)\n- [2.18.0](/cpp/docs/reference/webrisk/2.18.0)\n- [2.17.0](/cpp/docs/reference/webrisk/2.17.0)\n- [2.16.0](/cpp/docs/reference/webrisk/2.16.0)\n- [2.15.1](/cpp/docs/reference/webrisk/2.15.1)\n- [2.14.0](/cpp/docs/reference/webrisk/2.14.0)\n- [2.13.0](/cpp/docs/reference/webrisk/2.13.0)\n- [2.12.0](/cpp/docs/reference/webrisk/2.12.0)\n- [2.11.0](/cpp/docs/reference/webrisk/2.11.0) \n\nWeb Risk API C++ Client Library\n===============================\n\nAn idiomatic C++ client library for [Web Risk](https://cloud.google.com/web-risk/), a service to detect malicious URLs on your website and in client applications.\n\nWhile this library is **GA** , please note Google Cloud C++ client libraries do **not** follow [Semantic Versioning](https://semver.org/).\n\n### Quickstart\n\nThe following shows the code that you'll run in the `google/cloud/webrisk/quickstart/` directory, which should give you a taste of the Web Risk API C++ client library API. \n\n #include \"google/cloud/webrisk/v1/web_risk_client.h\"\n #include \u003ciostream\u003e\n\n int main(int argc, char* argv[]) try {\n if (argc \u003e 2) {\n std::cerr \u003c\u003c \"Usage: \" \u003c\u003c argv[0]\n \u003c\u003c \" [uri (default https://www.google.com)]\\n\";\n return 1;\n }\n\n namespace webrisk = ::google::cloud::webrisk_v1;\n auto client =\n webrisk::WebRiskServiceClient(webrisk::MakeWebRiskServiceConnection());\n\n auto const uri = std::string{argc == 2 ? argv[1] : \"https://www.google.com/\"};\n auto const threat_types = {google::cloud::webrisk::v1::MALWARE,\n google::cloud::webrisk::v1::UNWANTED_SOFTWARE};\n auto response = client.SearchUris(\"https://www.google.com/\", threat_types);\n if (!response) throw std::move(response).status();\n std::cout \u003c\u003c response-\u003eDebugString() \u003c\u003c \"\\n\";\n\n return 0;\n } catch (google::cloud::Status const& status) {\n std::cerr \u003c\u003c \"google::cloud::Status thrown: \" \u003c\u003c status \u003c\u003c \"\\n\";\n return 1;\n }\n\n### Main classes\n\nThe main class in this library is [`webrisk_v1::WebRiskServiceClient`](/cpp/docs/reference/webrisk/2.21.0/classgoogle_1_1cloud_1_1webrisk__v1_1_1WebRiskServiceClient). All RPCs are exposed as member functions of this class. Other classes provide helpers, configuration parameters, and infrastructure to mock [`webrisk_v1::WebRiskServiceClient`](/cpp/docs/reference/webrisk/2.21.0/classgoogle_1_1cloud_1_1webrisk__v1_1_1WebRiskServiceClient) when testing your application.\n\n### More Information\n\n- [Error Handling](https://cloud.google.com/cpp/docs/reference/common/latest/common-error-handling.html) - describes how the library reports errors.\n- [How to Override the Default Endpoint](/cpp/docs/reference/webrisk/2.21.0/webrisk-override-endpoint) - describes how to override the default endpoint.\n- [How to Override the Authentication Credentials](/cpp/docs/reference/webrisk/2.21.0/webrisk-override-authentication) - describes how to change the authentication credentials used by the library.\n- [Override Retry, Backoff, and Idempotency Policies](/cpp/docs/reference/webrisk/2.21.0/webrisk-override-retry) - describes how to change the default retry policies.\n- [Environment Variables](/cpp/docs/reference/webrisk/2.21.0/webrisk-env) - describes environment variables that can configure the behavior of the library."]]