diff --git a/lib/polar/machines.ex b/lib/polar/machines.ex
index 8454c2a..414532a 100644
--- a/lib/polar/machines.ex
+++ b/lib/polar/machines.ex
@@ -1,6 +1,10 @@
 defmodule Polar.Machines do
   alias __MODULE__.Cluster
 
+  defdelegate list_clusters(scope),
+    to: Cluster.Manager,
+    as: :list
+
   defdelegate create_cluster(params),
     to: Cluster.Manager,
     as: :create
diff --git a/lib/polar/machines/cluster/connect.ex b/lib/polar/machines/cluster/connect.ex
index ceb4ff2..6ba574f 100644
--- a/lib/polar/machines/cluster/connect.ex
+++ b/lib/polar/machines/cluster/connect.ex
@@ -11,8 +11,6 @@ defmodule Polar.Machines.Cluster.Connect do
     user = Repo.get(User, user_id)
     %{credential: credential} = cluster = Repo.get(Cluster, cluster_id)
 
-    IO.inspect(credential)
-
     client =
       Lexdee.create_client(
         credential["endpoint"],
diff --git a/lib/polar/machines/cluster/manager.ex b/lib/polar/machines/cluster/manager.ex
index 28d86fd..ed8e0a9 100644
--- a/lib/polar/machines/cluster/manager.ex
+++ b/lib/polar/machines/cluster/manager.ex
@@ -2,6 +2,14 @@ defmodule Polar.Machines.Cluster.Manager do
   alias Polar.Repo
   alias Polar.Machines.Cluster
 
+  import Ecto.Query, only: [where: 3]
+
+  def list(:for_testing) do
+    Cluster
+    |> where([c], c.current_state == "healthy")
+    |> Repo.all()
+  end
+
   def create(params) do
     %Cluster{}
     |> Cluster.changeset(params)
diff --git a/lib/polar_web/controllers/publish/testing/assessment_controller.ex b/lib/polar_web/controllers/publish/testing/assessment_controller.ex
new file mode 100644
index 0000000..e69de29
diff --git a/lib/polar_web/controllers/publish/testing/assessment_json.ex b/lib/polar_web/controllers/publish/testing/assessment_json.ex
new file mode 100644
index 0000000..e69de29
diff --git a/lib/polar_web/controllers/publish/testing/cluster_controller.ex b/lib/polar_web/controllers/publish/testing/cluster_controller.ex
new file mode 100644
index 0000000..c191370
--- /dev/null
+++ b/lib/polar_web/controllers/publish/testing/cluster_controller.ex
@@ -0,0 +1,11 @@
+defmodule PolarWeb.Publish.Testing.ClusterController do
+  use PolarWeb, :controller
+
+  alias Polar.Machines
+
+  def index(conn, _params) do
+    clusters = Machines.list_clusters(:for_testing)
+
+    render(conn, :index, %{clusters: clusters})
+  end
+end
diff --git a/lib/polar_web/controllers/publish/testing/cluster_json.ex b/lib/polar_web/controllers/publish/testing/cluster_json.ex
new file mode 100644
index 0000000..0cea9c9
--- /dev/null
+++ b/lib/polar_web/controllers/publish/testing/cluster_json.ex
@@ -0,0 +1,17 @@
+defmodule PolarWeb.Publish.Testing.ClusterJSON do
+  alias Polar.Machines.Cluster
+
+  def index(%{clusters: clusters}) do
+    %{
+      data: Enum.map(clusters, &data/1)
+    }
+  end
+
+  def data(%Cluster{} = cluster) do
+    %{
+      id: cluster.id,
+      credential: cluster.credential,
+      current_state: cluster.current_state
+    }
+  end
+end
diff --git a/lib/polar_web/router.ex b/lib/polar_web/router.ex
index b84e5b8..eae81b2 100644
--- a/lib/polar_web/router.ex
+++ b/lib/polar_web/router.ex
@@ -99,6 +99,10 @@ defmodule PolarWeb.Router do
     scope "/" do
       pipe_through :publish
 
+      scope "/testing", Testing, as: :testing do
+        resources "/clusters", ClusterController, only: [:index]
+      end
+
       resources "/storage", StorageController, only: [:show], singleton: true
 
       resources "/products", ProductController, only: [:show] do
diff --git a/test/polar_web/controllers/publish/testing/cluster_controller_test.exs b/test/polar_web/controllers/publish/testing/cluster_controller_test.exs
new file mode 100644
index 0000000..58edc96
--- /dev/null
+++ b/test/polar_web/controllers/publish/testing/cluster_controller_test.exs
@@ -0,0 +1,67 @@
+defmodule PolarWeb.Publish.Testing.ClusterControllerTest do
+  use PolarWeb.ConnCase
+
+  alias Polar.Accounts
+  alias Polar.Machines
+
+  import Polar.AccountsFixtures
+
+  setup do
+    password = Accounts.generate_automation_password()
+
+    bot = bot_fixture(%{password: password})
+
+    user = Accounts.get_user_by_email_and_password(bot.email, password)
+
+    session_token =
+      Accounts.generate_user_session_token(user)
+      |> Base.encode64()
+
+    conn =
+      build_conn()
+      |> put_req_header("authorization", session_token)
+
+    {:ok, cluster} =
+      Machines.create_cluster(%{
+        name: "example",
+        type: "lxd",
+        arch: "amd64",
+        credential_endpoint: "some.cluster.com:8443",
+        credential_password: "sometoken",
+        credential_password_confirmation: "sometoken"
+      })
+
+    {:ok, _created_cluster} =
+      Machines.create_cluster(%{
+        name: "example2",
+        type: "lxd",
+        arch: "amd64",
+        credential_endpoint: "some.cluster.com:8443",
+        credential_password: "sometoken",
+        credential_password_confirmation: "sometoken"
+      })
+
+    {:ok, conn: conn, cluster: cluster, user: user}
+  end
+
+  describe "GET /publish/testing/clusters" do
+    setup %{cluster: cluster, user: user} do
+      {:ok, %{resource: connecting_cluster}} =
+        Eventful.Transit.perform(cluster, user, "connect")
+
+      {:ok, %{resource: _healthy_cluster}} =
+        Eventful.Transit.perform(connecting_cluster, user, "healthy")
+
+      {:ok, cluster: cluster}
+    end
+
+    test "list healthy clusters", %{conn: conn, cluster: cluster} do
+      conn =
+        get(conn, "/publish/testing/clusters")
+
+      assert %{"data" => data} = json_response(conn, 200)
+
+      assert cluster.id in Enum.map(data, & &1["id"])
+    end
+  end
+end