diff --git a/src/main/java/com/example/hackathon/controller/TestController.java b/src/main/java/com/example/hackathon/controller/TestController.java
deleted file mode 100644
index 8ea7a0d..0000000
--- a/src/main/java/com/example/hackathon/controller/TestController.java
+++ /dev/null
@@ -1,13 +0,0 @@
-package com.example.hackathon.controller;
-
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.RestController;
-
-@RestController
-public class TestController {
-
-    @GetMapping("/")
-    public String home() {
-        return "제발";
-    }
-}
diff --git a/src/main/java/com/example/hackathon/domain/activity/controller/ActivityController.java b/src/main/java/com/example/hackathon/domain/activity/controller/ActivityController.java
index 22f34f0..ea976c3 100644
--- a/src/main/java/com/example/hackathon/domain/activity/controller/ActivityController.java
+++ b/src/main/java/com/example/hackathon/domain/activity/controller/ActivityController.java
@@ -49,6 +49,7 @@ public Response<List<ActivityResponseDto>> getTodayMissionActivities(@AuthUser L
         );
     }
 
+    @Operation(summary = "유저의 활동 내역을 추가하는 API", description = "유저의 활동 내역을 추가합니다.")
     @PostMapping("/user/activities")
     public Response<Void> addUserActivities(
             @AuthUser Long userId,
diff --git a/src/main/java/com/example/hackathon/global/auth/controller/OAuthController.java b/src/main/java/com/example/hackathon/global/auth/controller/OAuthController.java
index 5f96827..521f725 100644
--- a/src/main/java/com/example/hackathon/global/auth/controller/OAuthController.java
+++ b/src/main/java/com/example/hackathon/global/auth/controller/OAuthController.java
@@ -2,6 +2,7 @@
 
 import com.example.hackathon.global.auth.service.KakaoOAuthService;
 import com.example.hackathon.global.response.Response;
+import io.swagger.v3.oas.annotations.Operation;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
@@ -18,6 +19,10 @@ public OAuthController(KakaoOAuthService kakaoOAuthService) {
         this.kakaoOAuthService = kakaoOAuthService;
     }
 
+    @Operation(
+            summary = "카카오 로그인 콜백 API",
+            description = "카카오 OAuth 인증 후 리디렉션되는 콜백 엔드포인트입니다. 인가 코드를 통해 JWT 토큰을 반환합니다."
+    )
     @GetMapping("/kakao/callback")
     public Response<?> kakaoLogin(@RequestParam("code") String code) {
         String jwtToken = kakaoOAuthService.loginWithKakao(code);