diff --git a/docs/rest-server/API.md b/docs/rest-server/API.md
index 405a54b5ef..55a21c83b9 100644
--- a/docs/rest-server/API.md
+++ b/docs/rest-server/API.md
@@ -771,10 +771,222 @@ Status: 200
   "numJobs":0,
   "numPendingJobs":0,
   "resourcesUsed":{
-    "memory":0,
-    "vCores":0,
-    "GPUs":0
+   "memory":0,
+   "vCores":0,
+   "GPUs":0
   },
+  "state":"running"
+}
+```
+
+*Response if the virtual cluster does not exist*
+```
+Status: 404
+
+{
+  "code": "NoVirtualClusterError",
+  "message": "Virtual cluster $vcname is not found."
+}
+```
+
+*Response if a server error occured*
+```
+Status: 500
+
+{
+  "code": "UnknownError",
+  "message": "*Upstream error messages*"
+}
+```
+
+### `PUT virtual-clusters/:vcName` (administrator only)
+
+Add or update virtual cluster quota in the system, don't allow to operate "default" vc.
+
+*Request*
+```
+PUT /api/v1/virtual-clusters/:vcName
+Authorization: Bearer <ACCESS_TOKEN>
+```
+
+*Parameters*
+```
+{
+  "vcCapacity": new capacity
+}
+```
+
+*Response if succeeded*
+```
+Status: 201
+
+{
+  "message": "Update vc: $vcName to capacity: $vcCapacity successfully."
+}
+```
+
+*Response if try to update "default" vc*
+```
+Status: 403
+
+{
+  "code": "ForbiddenUserError",
+  "message": "Don't allow to update default vc"
+}
+```
+
+*Response if current user has no permission*
+```
+Status: 403
+
+{
+  "code": "ForbiddenUserError",
+  "message": "Non-admin is not allow to do this operation."
+}
+```
+
+*Response if no enough quota*
+```
+Status: 403
+
+{
+  "code": "NoEnoughQuotaError",
+  "message": "No enough quota in default vc."
+}
+```
+
+*Response if "default" virtual cluster does not exist*
+```
+Status: 404
+
+{
+  "code": "NoVirtualClusterError",
+  "message": "Default virtual cluster is not found, can't allocate or free resource."
+}
+```
+
+*Response if a server error occured*
+```
+Status: 500
+
+{
+  "code": "UnknownError",
+  "message": "*Upstream error messages*"
+}
+```
+
+### `DELETE virtual-clusters/:vcName` (administrator only)
+
+remove virtual cluster in the system, don't allow to operate "default" vc.
+
+*Request*
+```
+DELETE /api/v1/virtual-clusters/:vcName
+Authorization: Bearer <ACCESS_TOKEN>
+```
+
+*Response if succeeded*
+```
+Status: 201
+
+{
+  "message": "Remove vc: $vcName successfully."
+}
+```
+
+*Response if current user has no permission*
+```
+Status: 403
+
+{
+  "code": "ForbiddenUserError",
+  "message": "Non-admin is not allow to do this operation."
+}
+```
+
+*Response if try to update "default" vc*
+```
+Status: 403
+
+{
+  "code": "ForbiddenUserError",
+  "message": "Don't allow to remove default vc."
+}
+```
+
+*Response if the virtual cluster does not exist*
+```
+Status: 404
+
+{
+  "code": "NoVirtualClusterError",
+  "message": "Virtual cluster $vcname is not found."
+}
+```
+
+*Response if "default" virtual cluster does not exist*
+```
+Status: 404
+
+{
+  "code": "NoVirtualClusterError",
+  "message": "Default virtual cluster is not found, can't allocate or free resource."
+}
+```
+
+*Response if a server error occured*
+```
+Status: 500
+
+{
+  "code": "UnknownError",
+  "message": "*Upstream error messages*"
+}
+```
+
+### `PUT virtual-clusters/:vcName/status` (administrator only)
+
+Change virtual cluster status, don't allow to operate "default" vc.
+
+*Request*
+```
+PUT /api/v1/virtual-clusters/:vcName/status
+Authorization: Bearer <ACCESS_TOKEN>
+```
+
+*Parameters*
+```
+{
+  "vcStatus": "running" | "stopped"
+}
+```
+
+*Response if succeeded*
+```
+Status: 201
+
+{
+  "message": "Update vc: $vcName to status: $vcStatus successfully."
+}
+```
+
+*Response if try to update "default" vc*
+```
+Status: 403
+
+{
+  "code": "ForbiddenUserError",
+  "message": "Don't allow to update default vc"
+}
+```
+
+*Response if current user has no permission*
+```
+Status: 403
+
+{
+  "code": "ForbiddenUserError",
+  "message": "Non-admin is not allow to do this operation."
 }
 ```