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.
Retry, Backoff, and Idempotency Policies.
The library automatically retries requests that fail with transient errors, and usesexponential backoffto backoff between retries. Application developers can override the default policies.
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 webpage provides documentation for the Web Risk API C++ Client Library, which is designed to detect malicious URLs in websites and client applications.\u003c/p\u003e\n"],["\u003cp\u003eThe library is generally available (GA) but does not follow Semantic Versioning guidelines.\u003c/p\u003e\n"],["\u003cp\u003eThe latest release candidate version is 2.37.0-rc, while version 2.11.0 is documented, with numerous versions in between available, down to 2.11.0.\u003c/p\u003e\n"],["\u003cp\u003eThe main class for interacting with the API is \u003ccode\u003ewebrisk_v1::WebRiskServiceClient\u003c/code\u003e, which exposes all RPCs as member functions.\u003c/p\u003e\n"],["\u003cp\u003eThe library includes automatic retry mechanisms with exponential backoff for transient errors, and offers customizable options for authentication credentials, and endpoints.\u003c/p\u003e\n"]]],[],null,["Version 2.11.0keyboard_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/2.11.0/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/2.11.0/classgoogle_1_1cloud_1_1webrisk__v1_1_1WebRiskServiceClient) when testing your application.\n\n### Retry, Backoff, and Idempotency Policies.\n\nThe library automatically retries requests that fail with transient errors, and uses [exponential backoff](https://en.wikipedia.org/wiki/Exponential_backoff) to backoff between retries. Application developers can override the default policies.\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/2.11.0/webrisk-override-endpoint) - describes how to override the default endpoint.\n- [How to Override the Authentication Credentials](/cpp/docs/reference/webrisk/2.11.0/webrisk-override-authentication) - describes how to change the authentication credentials used by the library.\n- [Environment Variables](/cpp/docs/reference/webrisk/2.11.0/webrisk-env) - describes environment variables that can configure the behavior of the library."]]