diff --git a/packages/lib/link/messages.js b/packages/lib/link/messages.js
index 7174b3e6..b7951c90 100644
--- a/packages/lib/link/messages.js
+++ b/packages/lib/link/messages.js
@@ -290,11 +290,14 @@ messages.listInstances = new Request({
 			type: "array",
 			items: {
 				additionalProperties: false,
-				required: ["name", "id", "assigned_slave"],
+				required: ["name", "id", "assigned_slave", "status"],
 				properties: {
 					"name": { type: "string" },
 					"id": { type: "integer" },
 					"assigned_slave": { type: ["null", "integer"] },
+					"status": { enum: [
+						"unknown", "unassigned", "stopped", "starting", "running", "creating_save", "exporting_data",
+					]},
 				},
 			},
 		},
diff --git a/packages/master/master.js b/packages/master/master.js
index b1aa838f..e3832fba 100755
--- a/packages/master/master.js
+++ b/packages/master/master.js
@@ -612,6 +612,7 @@ class ControlConnection extends BaseConnection {
 				id: instance.config.get("instance.id"),
 				name: instance.config.get("instance.name"),
 				assigned_slave: instance.config.get("instance.assigned_slave"),
+				status: instance.status,
 			});
 		}
 		return { list };
diff --git a/test/integration/clusterio.js b/test/integration/clusterio.js
index 584164c0..3ec94b1e 100644
--- a/test/integration/clusterio.js
+++ b/test/integration/clusterio.js
@@ -8,6 +8,16 @@ const link = require("@clusterio/lib/link");
 const { slowTest, get, execCtl, sendRcon, getControl, instancesDir } = require("./index");
 
 
+async function getInstances() {
+	let result = await link.messages.listInstances.send(getControl());
+	return new Map(result.list.map(instance => [instance.id, instance]));
+}
+
+async function checkInstanceStatus(id, status) {
+	let instances = await getInstances();
+	assert.equal(instances.get(44).status, status, "incorrect instance status");
+}
+
 describe("Integration of Clusterio", function() {
 	describe("clusterioctl", function() {
 		describe("slave list", function() {
@@ -22,15 +32,19 @@ describe("Integration of Clusterio", function() {
 		});
 
 		describe("instance create", function() {
-			it("runs", async function() {
+			it("creates the instance", async function() {
 				await execCtl("instance create test --id 44");
+				let instances = await getInstances();
+				assert(instances.has(44), "instance was not created");
+				assert.equal(instances.get(44).status, "unassigned", "incorrect instance status");
 			});
 		});
 
 		describe("instance assign", function() {
 			it("creates the instance files", async function() {
 				await execCtl("instance assign test 4");
-				assert(await fs.exists(path.join(instancesDir, "test")), "Instance was not created");
+				assert(await fs.exists(path.join(instancesDir, "test")), "Instance directory was not created");
+				await checkInstanceStatus(44, "stopped");
 			});
 		});
 
@@ -38,6 +52,7 @@ describe("Integration of Clusterio", function() {
 			it("creates a save", async function() {
 				slowTest(this);
 				await execCtl("instance create-save test");
+				await checkInstanceStatus(44, "stopped");
 			});
 		});
 
@@ -46,6 +61,7 @@ describe("Integration of Clusterio", function() {
 				slowTest(this);
 				await execCtl("instance export-data test");
 				assert(await fs.exists(path.join("static", "export", "locale.json")), "Export was not created");
+				await checkInstanceStatus(44, "stopped");
 			});
 		});
 
@@ -53,7 +69,7 @@ describe("Integration of Clusterio", function() {
 			it("starts the instance", async function() {
 				slowTest(this);
 				await execCtl("instance start test");
-				// TODO check that the instance actually started
+				await checkInstanceStatus(44, "running");
 			});
 		});
 
@@ -200,7 +216,7 @@ describe("Integration of Clusterio", function() {
 			it("stops the instance", async function() {
 				slowTest(this);
 				await execCtl("instance stop test");
-				// TODO check that the instance actually stopped
+				await checkInstanceStatus(44, "stopped");
 			});
 		});
 
@@ -208,7 +224,9 @@ describe("Integration of Clusterio", function() {
 			it("deletes the instance", async function() {
 				slowTest(this);
 				await execCtl("instance delete test");
-				assert(!await fs.exists(path.join(instancesDir, "test")), "Instance was not deleted");
+				assert(!await fs.exists(path.join(instancesDir, "test")), "Instance files was not deleted");
+				let instances = await getInstances();
+				assert(!instances.has(44), "instance was not deleted from master");
 			});
 		});
 
diff --git a/test/lib/command.js b/test/lib/command.js
index f09db22e..ceaa3a61 100644
--- a/test/lib/command.js
+++ b/test/lib/command.js
@@ -24,7 +24,7 @@ describe("lib/command", function() {
 				seq: 1, type: "list_instances_response",
 				data: {
 					seq: message.seq,
-					list: [{ id: 57, assigned_slave: 4, name: "Test Instance" }],
+					list: [{ id: 57, assigned_slave: 4, name: "Test Instance", status: "stopped" }],
 				},
 			});
 		} else if (message.type === "list_roles_request") {