This library uses the same mechanism (google::cloud::Options) and the commonoptionsas all other C++ client libraries for its configuration. Some*Optionclasses, which are only used in this library, are documented in this page.
[[["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 various versions of the Google Cloud C++ client library for API Keys, ranging from version 2.11.0 to the latest release candidate 2.37.0-rc.\u003c/p\u003e\n"],["\u003cp\u003eThe latest version is 2.37.0-rc, which is the release candidate version.\u003c/p\u003e\n"],["\u003cp\u003eThe library uses \u003ccode\u003egoogle::cloud::Options\u003c/code\u003e for configuration, consistent with other C++ client libraries.\u003c/p\u003e\n"],["\u003cp\u003eThe documentation includes specific configuration options like \u003ccode\u003eApiKeysRetryPolicyOption\u003c/code\u003e, \u003ccode\u003eApiKeysBackoffPolicyOption\u003c/code\u003e, \u003ccode\u003eApiKeysConnectionIdempotencyPolicyOption\u003c/code\u003e, and \u003ccode\u003eApiKeysPollingPolicyOption\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe documentation contains types such as \u003ccode\u003eApiKeysPolicyOptionList\u003c/code\u003e, and it contains a link to the overview of client library configuration.\u003c/p\u003e\n"]]],[],null,["# API Keys API Configuration Options (2.18.0)\n\nVersion 2.18.0keyboard_arrow_down\n\n- [2.42.0-rc (latest)](/cpp/docs/reference/apikeys/latest/group__google-cloud-apikeys-options)\n- [2.41.0](/cpp/docs/reference/apikeys/2.41.0/group__google-cloud-apikeys-options)\n- [2.40.0](/cpp/docs/reference/apikeys/2.40.0/group__google-cloud-apikeys-options)\n- [2.39.0](/cpp/docs/reference/apikeys/2.39.0/group__google-cloud-apikeys-options)\n- [2.38.0](/cpp/docs/reference/apikeys/2.38.0/group__google-cloud-apikeys-options)\n- [2.37.0](/cpp/docs/reference/apikeys/2.37.0/group__google-cloud-apikeys-options)\n- [2.36.0](/cpp/docs/reference/apikeys/2.36.0/group__google-cloud-apikeys-options)\n- [2.35.0](/cpp/docs/reference/apikeys/2.35.0/group__google-cloud-apikeys-options)\n- [2.34.0](/cpp/docs/reference/apikeys/2.34.0/group__google-cloud-apikeys-options)\n- [2.33.0](/cpp/docs/reference/apikeys/2.33.0/group__google-cloud-apikeys-options)\n- [2.32.0](/cpp/docs/reference/apikeys/2.32.0/group__google-cloud-apikeys-options)\n- [2.31.0](/cpp/docs/reference/apikeys/2.31.0/group__google-cloud-apikeys-options)\n- [2.30.0](/cpp/docs/reference/apikeys/2.30.0/group__google-cloud-apikeys-options)\n- [2.29.0](/cpp/docs/reference/apikeys/2.29.0/group__google-cloud-apikeys-options)\n- [2.28.0](/cpp/docs/reference/apikeys/2.28.0/group__google-cloud-apikeys-options)\n- [2.27.0](/cpp/docs/reference/apikeys/2.27.0/group__google-cloud-apikeys-options)\n- [2.26.0](/cpp/docs/reference/apikeys/2.26.0/group__google-cloud-apikeys-options)\n- [2.25.1](/cpp/docs/reference/apikeys/2.25.1/group__google-cloud-apikeys-options)\n- [2.24.0](/cpp/docs/reference/apikeys/2.24.0/group__google-cloud-apikeys-options)\n- [2.23.0](/cpp/docs/reference/apikeys/2.23.0/group__google-cloud-apikeys-options)\n- [2.22.1](/cpp/docs/reference/apikeys/2.22.1/group__google-cloud-apikeys-options)\n- [2.21.0](/cpp/docs/reference/apikeys/2.21.0/group__google-cloud-apikeys-options)\n- [2.20.0](/cpp/docs/reference/apikeys/2.20.0/group__google-cloud-apikeys-options)\n- [2.19.0](/cpp/docs/reference/apikeys/2.19.0/group__google-cloud-apikeys-options)\n- [2.18.0](/cpp/docs/reference/apikeys/2.18.0/group__google-cloud-apikeys-options)\n- [2.17.0](/cpp/docs/reference/apikeys/2.17.0/group__google-cloud-apikeys-options)\n- [2.16.0](/cpp/docs/reference/apikeys/2.16.0/group__google-cloud-apikeys-options)\n- [2.15.1](/cpp/docs/reference/apikeys/2.15.1/group__google-cloud-apikeys-options)\n- [2.14.0](/cpp/docs/reference/apikeys/2.14.0/group__google-cloud-apikeys-options)\n- [2.13.0](/cpp/docs/reference/apikeys/2.13.0/group__google-cloud-apikeys-options)\n- [2.12.0](/cpp/docs/reference/apikeys/2.12.0/group__google-cloud-apikeys-options)\n- [2.11.0](/cpp/docs/reference/apikeys/2.11.0/group__google-cloud-apikeys-options) \n\nAPI Keys API Configuration Options\n==================================\n\nThis library uses the same mechanism ([`google::cloud::Options`](https://cloud.google.com/cpp/docs/reference/common/latest/classgoogle_1_1cloud_1_1Options.html)) and the common [options](https://cloud.google.com/cpp/docs/reference/common/latest/group__options.html) as all other C++ client libraries for its configuration. Some `*Option` classes, which are only used in this library, are documented in this page.\n\n###### See Also\n\n[Client Library Configuration](https://cloud.google.com/cpp/docs/reference/common/latest/group__options.html) - for an overview of client library configuration.\n\n### Classes\n\n- [`google::cloud::apikeys_v2::ApiKeysRetryPolicyOption`](/cpp/docs/reference/apikeys/2.18.0/structgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysRetryPolicyOption)\n- [`google::cloud::apikeys_v2::ApiKeysBackoffPolicyOption`](/cpp/docs/reference/apikeys/2.18.0/structgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysBackoffPolicyOption)\n- [`google::cloud::apikeys_v2::ApiKeysConnectionIdempotencyPolicyOption`](/cpp/docs/reference/apikeys/2.18.0/structgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysConnectionIdempotencyPolicyOption)\n- [`google::cloud::apikeys_v2::ApiKeysPollingPolicyOption`](/cpp/docs/reference/apikeys/2.18.0/structgoogle_1_1cloud_1_1apikeys__v2_1_1ApiKeysPollingPolicyOption)\n\n### Types\n\n- [`ApiKeysPolicyOptionList`](/cpp/docs/reference/apikeys/2.18.0/namespacegoogle_1_1cloud_1_1apikeys__v2)"]]
