diff --git a/document/api/README.md b/document/api/README.md
new file mode 100644
index 00000000..7acef4a9
--- /dev/null
+++ b/document/api/README.md
@@ -0,0 +1,27 @@
+[webapi.yaml](webapi.yaml) is the web API yaml file for [swagger](https://swagger.io/).
+
+## Quickstart
+
+By the following steps, you can test APIs by the swagger editor.
+In this manual, we run knowledge and swagger editor under `http://localhost` to avoid CORS.
+
+- deploy knowledge by `launch.sh`.
+  - assume you can access knowledge by http://172.20.0.1:8080/knowledge
+- deploy swagger
+  - `docker run --rm -d swaggerapi/swagger-editor`
+  - assume you can access the swagger editor by http://172.17.0.2:8080
+- run nginx reverse proxy
+  - edit `default.conf` and modify the IP addresses of both containers.
+  - run nginx reverse proxy
+
+```bash
+docker run --rm -it -p 80:80 -v `pwd`/default.conf:/etc/nginx/conf.d/default.conf
+```
+
+If everything is OK, you can access knowledge by `http://localhost/knowledge` and swagger editor by `http://localhost`.
+
+Finally, create and set access token.
+
+- In knowledge, create an access token.
+- Open the swagger editor, and paste webapi.yaml.
+- Set the access token from the `Authorize` button in the right tab of the swagger editor.
diff --git a/document/api/default.conf b/document/api/default.conf
new file mode 100644
index 00000000..7969f813
--- /dev/null
+++ b/document/api/default.conf
@@ -0,0 +1,24 @@
+server {
+    listen       80;
+    server_name  localhost;
+
+    location / {
+        root   /usr/share/nginx/html;
+        index  index.html index.htm;
+    }
+
+    error_page   500 502 503 504  /50x.html;
+    location = /50x.html {
+        root   /usr/share/nginx/html;
+    }
+
+    location ~ ^/knowledge {
+        proxy_pass http://172.20.0.1:8080;
+    }
+
+    location ~ ^/swagger {
+        rewrite /swagger(.*) $1 break;
+  	proxy_pass http://172.17.0.2:8080;
+    }
+}
+
diff --git a/document/api/webapi.yaml b/document/api/webapi.yaml
index 83f27134..5682df92 100644
--- a/document/api/webapi.yaml
+++ b/document/api/webapi.yaml
@@ -4,7 +4,7 @@ info:
   description: "[Knowledge](https://github.com/support-project/knowledge) web API."
   version: "1.13.1"
 servers:
-  - url: http://localhost:8080/knowledge
+  - url: http://localhost/knowledge
     description: change me
 paths:
   "/api/sample":
@@ -159,7 +159,7 @@ paths:
                   name:
                     type: string
                     description: title
-  "/api/knowledge/{knowledge_id}":
+  "/api/knowledges/{knowledge_id}":
     get:
       description: "Get knowledge"
       tags:
@@ -281,9 +281,19 @@ components:
     User:
       type: "object"
       properties:
-        id:
+        insertDatetime:
+          type: string
+          format: datetime
+        insertUser:
+          type: integer
+        updateDatetime:
+          type: string
+          format: datetime
+        updateUser:
+          type: integer
+        userId:
           type: integer
-        name:
+        userName:
           type: string
     Members:
       type: object
@@ -423,6 +433,10 @@ components:
           type: string
         viewers:
           $ref: '#/components/schemas/Members'
+      required:
+        - content
+        - template
+        - title
   securitySchemes:
     ApiKeyAuth:
       type: apiKey
@@ -430,4 +444,3 @@ components:
       name: private_token
 security:
   - ApiKeyAuth: []
-