diff --git a/src/routes/api/add.js b/src/routes/api/add.js
new file mode 100644
index 0000000..c3700dd
--- /dev/null
+++ b/src/routes/api/add.js
@@ -0,0 +1,14 @@
+const express = require('express');
+const router = express.Router();
+
+router.post('/', (req, res) => {
+    const { input } = req.body;
+
+    res.json({ ret: input.a + input.b });
+});
+
+router.get('/:a/:b', (req, res) => {
+    res.json({ ret: req.params.a + req.params.b });
+});
+
+module.exports = router;
\ No newline at end of file
diff --git a/src/routes/docs/openapi.json b/src/routes/docs/openapi.json
index a83e440..9090ae9 100644
--- a/src/routes/docs/openapi.json
+++ b/src/routes/docs/openapi.json
@@ -287,6 +287,71 @@
           }
         }
       }
+    },
+    "/add": {
+      "post": {
+        "summary": "Adds two numbers",
+        "requestBody": {
+          "required": true,
+          "content": {
+            "application/json": {
+              "schema": {
+                "type": "object",
+                "properties": {
+                  "input": {
+                    "type": "object",
+                    "properties": {
+                      "a": {
+                        "type": "number",
+                        "example": 5
+                      },
+                      "b": {
+                        "type": "number",
+                        "example": 10
+                      }
+                    }
+                  }
+                }
+              }
+            }
+          }
+        },
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      }
+    },
+    "/add/{a}/{b}": {
+      "get": {
+        "summary": "Adds two numbers from path parameters",
+        "parameters": [
+          {
+            "name": "a",
+            "in": "path",
+            "required": true,
+            "schema": {
+              "type": "string"
+            },
+            "example": "5"
+          },
+          {
+            "name": "b",
+            "in": "path",
+            "required": true,
+            "schema": {
+              "type": "string"
+            },
+            "example": "10"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "Success"
+          }
+        }
+      }
     }
   }
 }
diff --git a/src/server.js b/src/server.js
index 0dae620..f0317df 100644
--- a/src/server.js
+++ b/src/server.js
@@ -8,6 +8,9 @@ const isOddRoute = require('./routes/api/isOdd');
 const toStringRoute = require('./routes/api/toString');
 const isNumberRoute = require('./routes/api/isNumber');
 const stringSplitRoute = require('./routes/api/stringSplit');
+const addRoute = require('./routes/api/add');
+
+
 const docsRoute = require('./routes/docs/main');
 
 const app = express();
@@ -24,6 +27,9 @@ app.use('/api/isOdd', isOddRoute);
 app.use('/api/toString', toStringRoute);
 app.use('/api/isNumber', isNumberRoute);
 app.use('/api/stringSplit', stringSplitRoute);
+app.use('/api/add', addRoute);
+
+
 app.use('/docs', docsRoute);
 
 app.listen(PORT, () => {