[[["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 2025-06-27 UTC."],[[["\u003cp\u003eThis document describes how to list all Engines associated with a project using a \u003ccode\u003eGET\u003c/code\u003e HTTP request to the provided URL, which follows gRPC Transcoding syntax.\u003c/p\u003e\n"],["\u003cp\u003eThe request URL requires a \u003ccode\u003eparent\u003c/code\u003e path parameter to specify the project, location, and collection, but does not use a request body.\u003c/p\u003e\n"],["\u003cp\u003eQuery parameters \u003ccode\u003epageSize\u003c/code\u003e, \u003ccode\u003epageToken\u003c/code\u003e, and \u003ccode\u003efilter\u003c/code\u003e can be used to customize the query, although \u003ccode\u003epageSize\u003c/code\u003e and \u003ccode\u003epageToken\u003c/code\u003e are currently unsupported.\u003c/p\u003e\n"],["\u003cp\u003eThe successful response to the list request will include an array of \u003ccode\u003eengines\u003c/code\u003e, each of which is an Engine object, along with a \u003ccode\u003enextPageToken\u003c/code\u003e field (which is unsupported).\u003c/p\u003e\n"],["\u003cp\u003eTo make this request, authorization requires the \u003ccode\u003ehttps://www.googleapis.com/auth/cloud-platform\u003c/code\u003e OAuth scope, and the user must have the \u003ccode\u003ediscoveryengine.engines.list\u003c/code\u003e IAM permission on the parent resource.\u003c/p\u003e\n"]]],[],null,["# Method: projects.locations.collections.engines.list\n\n- [HTTP request](#body.HTTP_TEMPLATE)\n- [Path parameters](#body.PATH_PARAMETERS)\n- [Query parameters](#body.QUERY_PARAMETERS)\n- [Request body](#body.request_body)\n- [Response body](#body.response_body)\n - [JSON representation](#body.ListEnginesResponse.SCHEMA_REPRESENTATION)\n- [Authorization scopes](#body.aspect)\n- [IAM Permissions](#body.aspect_1)\n\nLists all the [Engine](/generative-ai-app-builder/docs/reference/rest/v1/projects.locations.collections.engines#Engine)s associated with the project.\n\n### HTTP request\n\n`GET https://discoveryengine.googleapis.com/v1/{parent=projects/*/locations/*/collections/*}/engines`\n\nThe URL uses [gRPC Transcoding](https://google.aip.dev/127) syntax.\n\n### Path parameters\n\n### Query parameters\n\n### Request body\n\nThe request body must be empty.\n\n### Response body\n\nResponse message for [EngineService.ListEngines](/generative-ai-app-builder/docs/reference/rest/v1/projects.locations.collections.engines/list#google.cloud.discoveryengine.v1.EngineService.ListEngines) method.\n\nIf successful, the response body contains data with the following structure:\n\n### Authorization scopes\n\nRequires the following OAuth scope:\n\n- `https://www.googleapis.com/auth/cloud-platform`\n\nFor more information, see the [Authentication Overview](/docs/authentication#authorization-gcp).\n\n### IAM Permissions\n\nRequires the following [IAM](https://cloud.google.com/iam/docs) permission on the `parent` resource:\n\n- `discoveryengine.engines.list`\n\nFor more information, see the [IAM documentation](https://cloud.google.com/iam/docs)."]]