diff --git a/api-ref/source/index.rst b/api-ref/source/index.rst
index 11079c482..93823d5e0 100644
--- a/api-ref/source/index.rst
+++ b/api-ref/source/index.rst
@@ -11,3 +11,5 @@
 .. include:: images.inc
 .. include:: services.inc
 .. include:: hosts.inc
+.. include:: quotas.inc
+.. include:: quota_classes.inc
diff --git a/api-ref/source/parameters.yaml b/api-ref/source/parameters.yaml
index e82c7122c..c0ecab1a4 100644
--- a/api-ref/source/parameters.yaml
+++ b/api-ref/source/parameters.yaml
@@ -17,6 +17,12 @@ host_ident:
   in: path
   required: true
   type: string
+quota_class_name:
+  description: |
+    The name of quota class
+  in: path
+  required: true
+  type: string
 request_ident:
   description: |
     The ID of the request.
@@ -235,6 +241,12 @@ timestamps:
   in: query
   required: false
   type: boolean
+usages:
+  description: |
+    Whether to show in_use in the quotas
+  in: query
+  required: false
+  type: boolean
 user_id_query:
   description: |
     Filters the response by user ID.
@@ -309,6 +321,19 @@ command-request:
   in: body
   required: false
   type: string
+container-request:
+  description: |
+    The number of containers
+  in: body
+  required: false
+  type: int
+container-response:
+  description: |
+    The object of detailed containers quota, including in_use,
+    limit of number of instances.
+  in: body
+  required: true
+  type: object
 container_action:
   description: |
     The container action object.
@@ -360,6 +385,13 @@ cpu-request:
   in: body
   required: false
   type: float
+cpu-response:
+  description: |
+    The object of detailed cpu set quota, including in_use,
+    limit of number of cpu set.
+  in: body
+  required: true
+  type: object
 created_at:
   description: |
     The date and time when the resource was created.
@@ -397,6 +429,19 @@ disabled_reason:
   in: body
   required: true
   type: string
+disk-request:
+  description: |
+    The number of gigabytes of container disk
+  required: false
+  in: body
+  type: int
+disk-response:
+  description: |
+    The object of detailed disk quota, including in_use,
+    limit of disk.
+  required: true
+  in: body
+  type: object
 environment:
   description: |
     The environment variables.
@@ -743,6 +788,13 @@ memory-request:
   in: body
   required: false
   type: integer
+memory-response:
+  description: |
+    The object of detailed memory quota, including in_use,
+    limit number of memory.
+  in: body
+  required: true
+  type: object
 message:
   description: |
     The error message message about this action when error occurred.
diff --git a/api-ref/source/quota_classes.inc b/api-ref/source/quota_classes.inc
new file mode 100644
index 000000000..f44738cdc
--- /dev/null
+++ b/api-ref/source/quota_classes.inc
@@ -0,0 +1,103 @@
+.. -*- rst -*-
+
+=====================
+ Manage Quota Classes
+=====================
+
+Get, updates quota classes
+
+Create or Update Quotas for Quota Class
+=======================================
+
+.. rest_method:: PUT /v1/quota_classes/{quota_class_name}
+
+Update the quotas for the Quota Class. If the requested Quota Class is not
+found in the DB, then the API will create the one.
+
+Response Codes
+--------------
+
+.. rest_status_code:: success status.yaml
+
+   - 200
+
+.. rest_status_code:: error status.yaml
+
+   - 400
+   - 401
+   - 403
+
+Request
+-------
+
+.. rest_parameters:: parameters.yaml
+
+   - quota_class_name: quota_class_name
+   - containers: container-request
+   - memory: memory-request
+   - cpu: cpu-request
+   - disk: disk-request
+
+Request Example
+---------------
+
+.. literalinclude:: samples/quota-classes-update-req.json
+   :language: javascript
+
+Response
+--------
+
+.. rest_parameters:: parameters.yaml
+
+   - containers: container-response
+   - memory: memory-response
+   - cpu: cpu-response
+   - disk: disk-response
+
+Response Example
+----------------
+
+.. literalinclude:: samples/quota-classes-update-resp.json
+   :language: javascript
+
+List quotas for Quota Class
+===========================
+
+.. rest_method:: GET /v1/quota_classes/{quota_class_name}
+
+List quotas for Quota Class
+
+Response Codes
+--------------
+
+.. rest_status_code:: success status.yaml
+
+   - 200
+
+.. rest_status_code:: error status.yaml
+
+   - 401
+   - 403
+
+Request
+-------
+
+.. rest_parameters:: parameters.yaml
+
+   - quota_class_name: quota_class_name
+
+Response
+--------
+
+.. rest_parameters:: parameters.yaml
+
+   - containers: container-response
+   - memory: memory-response
+   - cpu: cpu-response
+   - disk: disk-response
+
+Response Example
+----------------
+
+.. literalinclude:: samples/quota-classes-get-resp.json
+   :language: javascript
diff --git a/api-ref/source/quotas.inc b/api-ref/source/quotas.inc
new file mode 100644
index 000000000..a4ecbeb72
--- /dev/null
+++ b/api-ref/source/quotas.inc
@@ -0,0 +1,163 @@
+.. -*- rst -*-
+
+==============
+ Manage Quotas
+==============
+
+Gets, updates, gets default and deletes quotas for a project.
+
+Update quotas for a project
+===========================
+
+.. rest_method:: PUT /v1/quotas
+
+Update the quotas for a project
+
+Response Codes
+--------------
+
+.. rest_status_code:: success status.yaml
+
+   - 200
+
+.. rest_status_code:: error status.yaml
+
+   - 400
+   - 401
+   - 403
+
+Request
+-------
+
+.. rest_parameters:: parameters.yaml
+
+   - containers: container-request
+   - memory: memory-request
+   - cpu: cpu-request
+   - disk: disk-request
+
+Request Example
+---------------
+
+.. literalinclude:: samples/quotas-update-req.json
+   :language: javascript
+
+Response
+--------
+
+.. rest_parameters:: parameters.yaml
+
+   - containers: container-response
+   - memory: memory-response
+   - cpu: cpu-response
+   - disk: disk-response
+
+Response Example
+----------------
+
+.. literalinclude:: samples/quotas-update-resp.json
+   :language: javascript
+
+Get quotas for a project
+========================
+
+.. rest_method:: GET /v1/quotas
+
+Get quotas for a project
+
+Response Codes
+--------------
+
+.. rest_status_code:: success status.yaml
+
+   - 200
+
+.. rest_status_code:: error status.yaml
+
+   - 400
+   - 401
+   - 403
+
+Request
+-------
+
+Response
+--------
+
+.. rest_parameters:: parameters.yaml
+
+   - usages: usages
+   - containers: container-response
+   - memory: memory-response
+   - cpu: cpu-response
+   - disk: disk-response
+
+Response Example
+----------------
+
+.. literalinclude:: samples/quotas-get-resp.json
+   :language: javascript
+
+Get Default quotas for a project
+================================
+
+.. rest_method:: GET /v1/quotas/defaults
+
+Get the default quotas for a project
+
+Response Codes
+--------------
+
+.. rest_status_code:: success status.yaml
+
+   - 200
+
+.. rest_status_code:: error status.yaml
+
+   - 400
+   - 401
+   - 403
+
+Request
+-------
+
+Response
+--------
+
+.. rest_parameters:: parameters.yaml
+
+   - usages: usages
+   - containers: container-response
+   - memory: memory-response
+   - cpu: cpu-response
+   - disk: disk-response
+
+Response Example
+----------------
+
+.. literalinclude:: samples/quotas-get-defaults-resp.json
+   :language: javascript
+
+Revert Quotas to defaults
+=========================
+
+.. rest_method:: DELETE /v1/quotas
+
+Reverts the quotas to default values for a project
+
+.. rest_status_code:: success status.yaml
+
+   - 202
+
+.. rest_status_code:: error status.yaml
+
+   - 401
+   - 403
+
+Request
+-------
+
+Response
+--------
+
+There is no body content for the response of a successful DELETE operation.
diff --git a/api-ref/source/samples/quota-classes-get-resp.json b/api-ref/source/samples/quota-classes-get-resp.json
new file mode 100644
index 000000000..b3b9f7c55
--- /dev/null
+++ b/api-ref/source/samples/quota-classes-get-resp.json
@@ -0,0 +1,6 @@
+{
+    "disk": 100,
+    "cpu": 20,
+    "containers": 40,
+    "memory": 51200
+}
diff --git a/api-ref/source/samples/quota-classes-update-req.json b/api-ref/source/samples/quota-classes-update-req.json
new file mode 100644
index 000000000..60c54a770
--- /dev/null
+++ b/api-ref/source/samples/quota-classes-update-req.json
@@ -0,0 +1,6 @@
+{
+    "disk": 200,
+    "cpu": 30,
+    "containers": 50,
+    "memory": 102400
+}
diff --git a/api-ref/source/samples/quota-classes-update-resp.json b/api-ref/source/samples/quota-classes-update-resp.json
new file mode 100644
index 000000000..60c54a770
--- /dev/null
+++ b/api-ref/source/samples/quota-classes-update-resp.json
@@ -0,0 +1,6 @@
+{
+    "disk": 200,
+    "cpu": 30,
+    "containers": 50,
+    "memory": 102400
+}
diff --git a/api-ref/source/samples/quotas-get-defaults-resp.json b/api-ref/source/samples/quotas-get-defaults-resp.json
new file mode 100644
index 000000000..b3b9f7c55
--- /dev/null
+++ b/api-ref/source/samples/quotas-get-defaults-resp.json
@@ -0,0 +1,6 @@
+{
+    "disk": 100,
+    "cpu": 20,
+    "containers": 40,
+    "memory": 51200
+}
diff --git a/api-ref/source/samples/quotas-get-resp.json b/api-ref/source/samples/quotas-get-resp.json
new file mode 100644
index 000000000..f20249796
--- /dev/null
+++ b/api-ref/source/samples/quotas-get-resp.json
@@ -0,0 +1,18 @@
+{
+    "disk": {
+        "limit": 100,
+        "in_use": 0
+    },
+    "cpu": {
+        "limit": 20,
+        "in_use": 4
+    },
+    "containers": {
+        "limit": 40,
+        "in_use": 5
+    },
+    "memory": {
+        "limit": 51200,
+        "in_use": 2048
+    }
+}
diff --git a/api-ref/source/samples/quotas-update-req.json b/api-ref/source/samples/quotas-update-req.json
new file mode 100644
index 000000000..69ae77ca3
--- /dev/null
+++ b/api-ref/source/samples/quotas-update-req.json
@@ -0,0 +1,6 @@
+{
+    "disk": 200,
+    "cpu": 30,
+    "containers": 80,
+    "memory": 102400
+}
diff --git a/api-ref/source/samples/quotas-update-resp.json b/api-ref/source/samples/quotas-update-resp.json
new file mode 100644
index 000000000..69ae77ca3
--- /dev/null
+++ b/api-ref/source/samples/quotas-update-resp.json
@@ -0,0 +1,6 @@
+{
+    "disk": 200,
+    "cpu": 30,
+    "containers": 80,
+    "memory": 102400
+}