---
title: "list all topics reachable with the instance's application default credentials"
method: GET
path: "/w/{workspace}/gcp_triggers/topics/list"
tags: ["gcp_trigger"]
---

# list all topics reachable with the instance's application default credentials

`GET /w/{workspace}/gcp_triggers/topics/list`

## Path parameters

- `workspace` string, required

## Query parameters

- `project_id` string

## Response `200`

get all google topics

- string[]

## Changes

- **2026-08-21** `d20f117cda84` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/windmill/apis/windmill-api/changes/w/:workspace/gcp_triggers/topics/list/get.md)

---

[API](https://skmtc.dev/windmill/apis/windmill-api.md) · [All operations](https://skmtc.dev/windmill/apis/windmill-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/windmill/windmill-api/revisions/4ca37a00d296/schema)