An idiomatic C++ client library for the Service Usage API, an infrastructure service of Google Cloud that lets you list and manage APIs and Services in your Cloud projects.
While this library is GA, please note Google Cloud C++ client libraries do not follow Semantic Versioning.
Quickstart
The following shows the code that you'll run in the google/cloud/serviceusage/quickstart/ directory, which should give you a taste of the Service Usage API C++ client library API.
[[["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 details the C++ client library for the Google Cloud Service Usage API, which manages APIs and services in Cloud projects.\u003c/p\u003e\n"],["\u003cp\u003eThe latest release candidate version is 2.37.0-rc, but there are many prior versions available, ranging from 2.36.0 down to 2.11.0.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eserviceusage_v1::ServiceUsageClient\u003c/code\u003e class is the main interface for interacting with the API and exposes all RPCs as member functions.\u003c/p\u003e\n"],["\u003cp\u003eThe library provides guidance on error handling, overriding default settings like endpoints and authentication, and environment variable configurations for customization.\u003c/p\u003e\n"],["\u003cp\u003eThe provided quickstart code shows how to use the client to list services in a specified project.\u003c/p\u003e\n"]]],[],null,["Version 2.30.0keyboard_arrow_down\n\n- [2.42.0-rc (latest)](/cpp/docs/reference/serviceusage/latest)\n- [2.41.0](/cpp/docs/reference/serviceusage/2.41.0)\n- [2.40.0](/cpp/docs/reference/serviceusage/2.40.0)\n- [2.39.0](/cpp/docs/reference/serviceusage/2.39.0)\n- [2.38.0](/cpp/docs/reference/serviceusage/2.38.0)\n- [2.37.0](/cpp/docs/reference/serviceusage/2.37.0)\n- [2.36.0](/cpp/docs/reference/serviceusage/2.36.0)\n- [2.35.0](/cpp/docs/reference/serviceusage/2.35.0)\n- [2.34.0](/cpp/docs/reference/serviceusage/2.34.0)\n- [2.33.0](/cpp/docs/reference/serviceusage/2.33.0)\n- [2.32.0](/cpp/docs/reference/serviceusage/2.32.0)\n- [2.31.0](/cpp/docs/reference/serviceusage/2.31.0)\n- [2.30.0](/cpp/docs/reference/serviceusage/2.30.0)\n- [2.29.0](/cpp/docs/reference/serviceusage/2.29.0)\n- [2.28.0](/cpp/docs/reference/serviceusage/2.28.0)\n- [2.27.0](/cpp/docs/reference/serviceusage/2.27.0)\n- [2.26.0](/cpp/docs/reference/serviceusage/2.26.0)\n- [2.25.1](/cpp/docs/reference/serviceusage/2.25.1)\n- [2.24.0](/cpp/docs/reference/serviceusage/2.24.0)\n- [2.23.0](/cpp/docs/reference/serviceusage/2.23.0)\n- [2.22.1](/cpp/docs/reference/serviceusage/2.22.1)\n- [2.21.0](/cpp/docs/reference/serviceusage/2.21.0)\n- [2.20.0](/cpp/docs/reference/serviceusage/2.20.0)\n- [2.19.0](/cpp/docs/reference/serviceusage/2.19.0)\n- [2.18.0](/cpp/docs/reference/serviceusage/2.18.0)\n- [2.17.0](/cpp/docs/reference/serviceusage/2.17.0)\n- [2.16.0](/cpp/docs/reference/serviceusage/2.16.0)\n- [2.15.1](/cpp/docs/reference/serviceusage/2.15.1)\n- [2.14.0](/cpp/docs/reference/serviceusage/2.14.0)\n- [2.13.0](/cpp/docs/reference/serviceusage/2.13.0)\n- [2.12.0](/cpp/docs/reference/serviceusage/2.12.0)\n- [2.11.0](/cpp/docs/reference/serviceusage/2.11.0) \n\nService Usage API C++ Client Library\n====================================\n\nAn idiomatic C++ client library for the [Service Usage API](https://cloud.google.com/service-usage), an infrastructure service of Google Cloud that lets you list and manage APIs and Services in your Cloud projects.\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/serviceusage/quickstart/` directory, which should give you a taste of the Service Usage API C++ client library API. \n\n #include \"google/cloud/serviceusage/v1/service_usage_client.h\"\n #include \"google/cloud/project.h\"\n #include \u003ciostream\u003e\n\n int main(int argc, char* argv[]) try {\n if (argc != 2) {\n std::cerr \u003c\u003c \"Usage: \" \u003c\u003c argv[0] \u003c\u003c \" project-id\\n\";\n return 1;\n }\n\n namespace serviceusage = ::google::cloud::serviceusage_v1;\n auto client = serviceusage::ServiceUsageClient(\n serviceusage::MakeServiceUsageConnection());\n\n auto const project = google::cloud::Project(argv[1]);\n google::api::serviceusage::v1::ListServicesRequest request;\n request.set_parent(project.FullName());\n request.set_filter(\"state:ENABLED\");\n for (auto s : client.ListServices(request)) {\n if (!s) throw std::move(s).status();\n std::cout \u003c\u003c s-\u003eDebugString() \u003c\u003c \"\\n\";\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 [`serviceusage_v1::ServiceUsageClient`](/cpp/docs/reference/serviceusage/2.30.0/classgoogle_1_1cloud_1_1serviceusage__v1_1_1ServiceUsageClient). All RPCs are exposed as member functions of this class. Other classes provide helpers, configuration parameters, and infrastructure to mock [`serviceusage_v1::ServiceUsageClient`](/cpp/docs/reference/serviceusage/2.30.0/classgoogle_1_1cloud_1_1serviceusage__v1_1_1ServiceUsageClient) 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/serviceusage/2.30.0/serviceusage-override-endpoint) - describes how to override the default endpoint.\n- [How to Override the Authentication Credentials](/cpp/docs/reference/serviceusage/2.30.0/serviceusage-override-authentication) - describes how to change the authentication credentials used by the library.\n- [Override Retry, Backoff, and Idempotency Policies](/cpp/docs/reference/serviceusage/2.30.0/serviceusage-override-retry) - describes how to change the default retry policies.\n- [Environment Variables](/cpp/docs/reference/serviceusage/2.30.0/serviceusage-env) - describes environment variables that can configure the behavior of the library."]]