In some cases, you may need to override the default endpoint used by the client library. Use the EndpointOption when initializing the client library to change this default.
For example, this will override the default endpoint for iam_admin_v1::IAMClient:
// This configuration is common with Private Google Access:
// https://cloud.google.com/vpc/docs/private-google-access
auto options = google::cloud::Options{}.set<google::cloud::EndpointOption>(
"private.googleapis.com");
auto client = google::cloud::iam_admin_v1::IAMClient(
google::cloud::iam_admin_v1::MakeIAMConnection(options));
Follow these links to find examples for other *Client classes:
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-14 UTC."],[[["\u003cp\u003eThis document provides a guide on how to override the default endpoint used by the client library.\u003c/p\u003e\n"],["\u003cp\u003eYou can override the default endpoint by using the \u003ccode\u003eEndpointOption\u003c/code\u003e when initializing the client library.\u003c/p\u003e\n"],["\u003cp\u003eThe latest release candidate version available is 2.37.0-rc, while the documented version is 2.32.0.\u003c/p\u003e\n"],["\u003cp\u003eThere are examples for how to override the endpoint for \u003ccode\u003eiam_admin_v1::IAMClient\u003c/code\u003e, \u003ccode\u003eiam_credentials_v1::IAMCredentialsClient\u003c/code\u003e, \u003ccode\u003eiam_v1::IAMPolicyClient\u003c/code\u003e, and \u003ccode\u003eiam_v2::PoliciesClient\u003c/code\u003e classes, all located on version 2.32.0 of the documentation.\u003c/p\u003e\n"],["\u003cp\u003eThe webpage lists available versions of the content, ranging from version 2.11.0 all the way up to the latest release candidate, 2.37.0-rc.\u003c/p\u003e\n"]]],[],null,["Version 2.32.0keyboard_arrow_down\n\n- [2.42.0-rc (latest)](/cpp/docs/reference/iam/latest/iam-override-endpoint)\n- [2.41.0](/cpp/docs/reference/iam/2.41.0/iam-override-endpoint)\n- [2.40.0](/cpp/docs/reference/iam/2.40.0/iam-override-endpoint)\n- [2.39.0](/cpp/docs/reference/iam/2.39.0/iam-override-endpoint)\n- [2.38.0](/cpp/docs/reference/iam/2.38.0/iam-override-endpoint)\n- [2.37.0](/cpp/docs/reference/iam/2.37.0/iam-override-endpoint)\n- [2.36.0](/cpp/docs/reference/iam/2.36.0/iam-override-endpoint)\n- [2.35.0](/cpp/docs/reference/iam/2.35.0/iam-override-endpoint)\n- [2.34.0](/cpp/docs/reference/iam/2.34.0/iam-override-endpoint)\n- [2.33.0](/cpp/docs/reference/iam/2.33.0/iam-override-endpoint)\n- [2.32.0](/cpp/docs/reference/iam/2.32.0/iam-override-endpoint)\n- [2.31.0](/cpp/docs/reference/iam/2.31.0/iam-override-endpoint)\n- [2.30.0](/cpp/docs/reference/iam/2.30.0/iam-override-endpoint)\n- [2.29.0](/cpp/docs/reference/iam/2.29.0/iam-override-endpoint)\n- [2.28.0](/cpp/docs/reference/iam/2.28.0/iam-override-endpoint)\n- [2.27.0](/cpp/docs/reference/iam/2.27.0/iam-override-endpoint)\n- [2.26.0](/cpp/docs/reference/iam/2.26.0/iam-override-endpoint)\n- [2.25.1](/cpp/docs/reference/iam/2.25.1/iam-override-endpoint)\n- [2.24.0](/cpp/docs/reference/iam/2.24.0/iam-override-endpoint)\n- [2.23.0](/cpp/docs/reference/iam/2.23.0/iam-override-endpoint)\n- [2.22.1](/cpp/docs/reference/iam/2.22.1/iam-override-endpoint)\n- [2.21.0](/cpp/docs/reference/iam/2.21.0/iam-override-endpoint)\n- [2.20.0](/cpp/docs/reference/iam/2.20.0/iam-override-endpoint)\n- [2.19.0](/cpp/docs/reference/iam/2.19.0/iam-override-endpoint)\n- [2.18.0](/cpp/docs/reference/iam/2.18.0/iam-override-endpoint)\n- [2.17.0](/cpp/docs/reference/iam/2.17.0/iam-override-endpoint)\n- [2.16.0](/cpp/docs/reference/iam/2.16.0/iam-override-endpoint)\n- [2.15.1](/cpp/docs/reference/iam/2.15.1/iam-override-endpoint)\n- [2.14.0](/cpp/docs/reference/iam/2.14.0/iam-override-endpoint)\n- [2.13.0](/cpp/docs/reference/iam/2.13.0/iam-override-endpoint)\n- [2.12.0](/cpp/docs/reference/iam/2.12.0/iam-override-endpoint)\n- [2.11.0](/cpp/docs/reference/iam/2.11.0/iam-override-endpoint) \n\nHow to Override the Default Endpoint\n====================================\n\nIn some cases, you may need to override the default endpoint used by the client library. Use the [EndpointOption](https://cloud.google.com/cpp/docs/reference/common/latest/structgoogle_1_1cloud_1_1EndpointOption.html) when initializing the client library to change this default.\n\nFor example, this will override the default endpoint for `iam_admin_v1::IAMClient`: \n\n // This configuration is common with Private Google Access:\n // https://cloud.google.com/vpc/docs/private-google-access\n auto options = google::cloud::Options{}.set\u003cgoogle::cloud::EndpointOption\u003e(\n \"private.googleapis.com\");\n auto client = google::cloud::iam_admin_v1::IAMClient(\n google::cloud::iam_admin_v1::MakeIAMConnection(options));\n\nFollow these links to find examples for other `*Client` classes:\n\n- [`iam_admin_v1::IAMClient`](/cpp/docs/reference/iam/2.32.0/iam_admin_v1_1_1IAMClient-endpoint-snippet)\n- [`iam_credentials_v1::IAMCredentialsClient`](/cpp/docs/reference/iam/2.32.0/iam_credentials_v1_1_1IAMCredentialsClient-endpoint-snippet)\n- [`iam_v1::IAMPolicyClient`](/cpp/docs/reference/iam/2.32.0/iam_v1_1_1IAMPolicyClient-endpoint-snippet)\n- [`iam_v2::PoliciesClient`](/cpp/docs/reference/iam/2.32.0/iam_v2_1_1PoliciesClient-endpoint-snippet)"]]