Required. The name of the project in which to list topics. Format is projects/{project-id}.
Query parameters
Parameters
pageSize
integer
Optional. Maximum number of topics to return.
pageToken
string
Optional. The value returned by the last ListTopicsResponse; indicates that this is a continuation of a prior topics.list call, and that the system should return the next page of data.
Request body
The request body must be empty.
Response body
Response for the topics.list method.
If successful, the response body contains data with the following structure:
[[["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 2025-08-22 UTC."],[],[],null,["# Method: projects.topics.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.ListTopicsResponse.SCHEMA_REPRESENTATION)\n- [Authorization scopes](#body.aspect)\n- [Try it!](#try-it)\n\nLists matching topics.\n\n### HTTP request\n\nChoose a location: \nglobal \n\n\u003cbr /\u003e\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 for the `topics.list` method.\n\nIf successful, the response body contains data with the following structure:\n\n### Authorization scopes\n\nRequires one of the following OAuth scopes:\n\n- `https://www.googleapis.com/auth/pubsub`\n- `https://www.googleapis.com/auth/cloud-platform`\n\nFor more information, see the [Authentication Overview](/docs/authentication#authorization-gcp)."]]