diff --git a/internal/mockapi/model.go b/internal/mockapi/model.go
index e5dc8b7..969b322 100644
--- a/internal/mockapi/model.go
+++ b/internal/mockapi/model.go
@@ -86,11 +86,18 @@ func (e *Environment) SetCurrentDeployment(d *Deployment) {
 	e.currentDeployment = d
 }
 
+type Mount struct {
+	Source     string `json:"source"`
+	SourcePath string `json:"source_path"`
+}
+
 type App struct {
 	Name string `json:"name"`
 	Type string `json:"type"`
 	Size string `json:"size"`
-	Disk string `json:"disk"`
+	Disk int    `json:"disk"`
+
+	Mounts map[string]Mount `json:"mounts"`
 }
 
 type Commands struct {
diff --git a/tests/app_config_test.go b/tests/app_config_test.go
new file mode 100644
index 0000000..113e7c1
--- /dev/null
+++ b/tests/app_config_test.go
@@ -0,0 +1,96 @@
+package tests
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"github.com/platformsh/cli/internal/mockapi"
+)
+
+func TestAppConfig(t *testing.T) {
+	authServer := mockapi.NewAuthServer(t)
+	defer authServer.Close()
+
+	apiHandler := mockapi.NewHandler(t)
+
+	projectID := "aht1iegh3nei9"
+
+	apiHandler.SetProjects([]*mockapi.Project{{
+		ID: projectID,
+		Links: mockapi.MakeHALLinks("self=/projects/"+projectID,
+			"environments=/projects/"+projectID+"/environments"),
+		DefaultBranch: "main",
+	}})
+
+	main := makeEnv(projectID, "main", "production", "active", nil)
+	main.SetCurrentDeployment(&mockapi.Deployment{
+		WebApps: map[string]mockapi.App{
+			"app": {Name: "app", Type: "golang:1.23", Size: "M", Disk: 2048, Mounts: map[string]mockapi.Mount{}},
+		},
+		Links: mockapi.MakeHALLinks("self=/projects/" + projectID + "/environments/main/deployment/current"),
+	})
+	envs := []*mockapi.Environment{main}
+
+	apiHandler.SetEnvironments(envs)
+
+	apiServer := httptest.NewServer(apiHandler)
+	defer apiServer.Close()
+
+	run := runnerWithAuth(t, apiServer.URL, authServer.URL)
+
+	assert.Equal(t, strings.TrimLeft(`
+name: app
+type: 'golang:1.23'
+size: M
+disk: 2048
+mounts: {  }
+`, "\n"), run("app:config", "-p", projectID, "-e", ".", "--refresh"))
+
+	assert.Equal(t, "golang:1.23\n", run("app:config", "-p", projectID, "-e", ".", "--refresh", "-P", "type"))
+}
+
+func TestAppConfigLocal(t *testing.T) {
+	run := runWithLocalApp(t, &mockapi.App{
+		Name: "local-app",
+		Type: "golang:1.24",
+		Size: "L",
+		Disk: 1024,
+		Mounts: map[string]mockapi.Mount{
+			"example": {
+				Source:     "local",
+				SourcePath: "example",
+			},
+		},
+	})
+
+	assert.Equal(t, strings.TrimLeft(`
+name: local-app
+type: 'golang:1.24'
+size: L
+disk: 1024
+mounts:
+    example:
+        source: local
+        source_path: example
+`, "\n"), run("app:config"))
+
+	assert.Equal(t, "local\n", run("app:config", "--property", "mounts.example.source"))
+}
+
+func runWithLocalApp(t *testing.T, app *mockapi.App) func(args ...string) string {
+	return func(args ...string) string {
+		j, err := json.Marshal(app)
+		require.NoError(t, err)
+		cmd := command(t, args...)
+		cmd.Env = append(cmd.Env, "PLATFORM_APPLICATION="+base64.StdEncoding.EncodeToString(j))
+		b, err := cmd.Output()
+		require.NoError(t, err)
+		return string(b)
+	}
+}
diff --git a/tests/mount_list_test.go b/tests/mount_list_test.go
new file mode 100644
index 0000000..4e685c0
--- /dev/null
+++ b/tests/mount_list_test.go
@@ -0,0 +1,80 @@
+package tests
+
+import (
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"github.com/platformsh/cli/internal/mockapi"
+)
+
+func TestMountList(t *testing.T) {
+	authServer := mockapi.NewAuthServer(t)
+	defer authServer.Close()
+
+	apiHandler := mockapi.NewHandler(t)
+
+	apiServer := httptest.NewServer(apiHandler)
+	defer apiServer.Close()
+
+	projectID := "oa3chu0foot4s"
+
+	apiHandler.SetProjects([]*mockapi.Project{{
+		ID: projectID,
+		Links: mockapi.MakeHALLinks("self=/projects/"+projectID,
+			"environments=/projects/"+projectID+"/environments"),
+		DefaultBranch: "main",
+	}})
+
+	main := makeEnv(projectID, "main", "production", "active", nil)
+	main.Links["pf:ssh:app"] = mockapi.HALLink{HREF: "ssh://" + projectID + "--app@ssh.example.com"}
+	main.SetCurrentDeployment(&mockapi.Deployment{
+		WebApps: map[string]mockapi.App{
+			"app": {
+				Name: "app",
+				Type: "golang:1.23",
+				Size: "AUTO",
+				Mounts: map[string]mockapi.Mount{
+					"/public/sites/default/files": {Source: "local", SourcePath: "files"},
+				}},
+		},
+		Services: map[string]mockapi.App{},
+		Routes:   map[string]any{},
+		Workers:  map[string]mockapi.Worker{},
+		Links:    mockapi.MakeHALLinks("self=/projects/" + projectID + "/environments/main/deployment/current"),
+	})
+
+	apiHandler.SetEnvironments([]*mockapi.Environment{main})
+
+	run := runnerWithAuth(t, apiServer.URL, authServer.URL)
+
+	assert.Equal(t, strings.TrimLeft(`
+Mount path	Definition
+public/sites/default/files	"source: local
+source_path: files"
+`, "\n"), run("mounts", "-p", projectID, "-e", "main", "--refresh", "--format", "tsv"))
+
+	assert.Equal(t, "public/sites/default/files\n", run("mounts", "-p", projectID, "-e", "main", "--paths"))
+}
+
+func TestMountListLocal(t *testing.T) {
+	run := runWithLocalApp(t, &mockapi.App{
+		Name: "local-app",
+		Type: "golang:1.24",
+		Size: "L",
+		Mounts: map[string]mockapi.Mount{
+			"/tmp": {Source: "local", SourcePath: "tmp"},
+		},
+	})
+
+	assert.Equal(t, strings.TrimLeft(`
++------------+------------------+
+| Mount path | Definition       |
++------------+------------------+
+| tmp        | source: local    |
+|            | source_path: tmp |
++------------+------------------+
+`, "\n"), run("mounts"))
+}