diff --git a/build.gradle b/build.gradle
index 6b6ff07..3816c65 100644
--- a/build.gradle
+++ b/build.gradle
@@ -29,6 +29,7 @@ dependencies {
     implementation 'org.springframework.boot:spring-boot-starter-web'
     implementation 'org.springframework.boot:spring-boot-starter-webflux'
     implementation 'org.springdoc:springdoc-openapi-starter-webmvc-ui:2.2.0'
+    runtimeOnly 'io.netty:netty-resolver-dns-native-macos:4.1.94.Final:osx-aarch_64'
 
     compileOnly 'org.projectlombok:lombok'
     runtimeOnly 'com.mysql:mysql-connector-j'
diff --git a/src/main/java/team/flight/backend/controller/PostController.java b/src/main/java/team/flight/backend/controller/PostController.java
index 9d8802e..7d7fb6c 100644
--- a/src/main/java/team/flight/backend/controller/PostController.java
+++ b/src/main/java/team/flight/backend/controller/PostController.java
@@ -1,5 +1,7 @@
 package team.flight.backend.controller;
 
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
 import java.util.UUID;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.ResponseEntity;
@@ -11,6 +13,7 @@
 import team.flight.backend.service.PostService;
 import team.flight.backend.service.dto.FirstResponse;
 
+@Tag(name = "PPT 관련 API")
 @RestController
 @RequiredArgsConstructor
 @RequestMapping("/api/posts")
@@ -18,9 +21,10 @@ public class PostController {
 
     private final PostService postService;
 
+    @Operation(summary = "PPT 생성 요청 API")
     @PostMapping
     public ResponseEntity<FirstResponse> sendFirstRequest(@RequestBody FirstPostRequest request) {
         return ResponseEntity.ok()
-                .body(postService.sendUserFirstRequest(UUID.fromString(request.sessionId()), request.request()));
+                .body(postService.sendUserFirstRequest(UUID.fromString(request.sessionId()), request.postId(), request.request()));
     }
 }
diff --git a/src/main/java/team/flight/backend/controller/TestController.java b/src/main/java/team/flight/backend/controller/TestController.java
index ae03d7f..1fbb5ce 100644
--- a/src/main/java/team/flight/backend/controller/TestController.java
+++ b/src/main/java/team/flight/backend/controller/TestController.java
@@ -1,5 +1,7 @@
 package team.flight.backend.controller;
 
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
@@ -9,11 +11,13 @@
 import team.flight.backend.dto.FirstPostRequest;
 import team.flight.backend.service.dto.FirstResponse;
 
+@Tag(name = "TEST 관련 API")
 @RestController
 @RestControllerAdvice
 @RequestMapping("/api/test")
 public class TestController {
 
+    @Operation(summary = "TEST 요청 API")
     @PostMapping
     public ResponseEntity<FirstResponse> testApi(@RequestBody FirstPostRequest request){
         return ResponseEntity.ok().body(new FirstResponse(1L, request.request()));
diff --git a/src/main/java/team/flight/backend/dto/FirstPostRequest.java b/src/main/java/team/flight/backend/dto/FirstPostRequest.java
index a176549..e85f5fc 100644
--- a/src/main/java/team/flight/backend/dto/FirstPostRequest.java
+++ b/src/main/java/team/flight/backend/dto/FirstPostRequest.java
@@ -1,7 +1,13 @@
 package team.flight.backend.dto;
 
+import io.swagger.v3.oas.annotations.media.Schema;
+
 public record FirstPostRequest(
+        @Schema(description = "존재하는 클라이언트 session-id")
         String sessionId,
+        @Schema(description = "존재하는 게시글 ID, 없으면 null", nullable = true)
+        Long postId,
+        @Schema(description = "사용자의 요청 프롬프트")
         String request
 ) {
 }
diff --git a/src/main/java/team/flight/backend/entity/Post.java b/src/main/java/team/flight/backend/entity/Post.java
index 8bae3b3..6a64a87 100644
--- a/src/main/java/team/flight/backend/entity/Post.java
+++ b/src/main/java/team/flight/backend/entity/Post.java
@@ -42,4 +42,8 @@ public Post(UUID sessionId, String request, String result) {
     public void updateResult(String result) {
         this.result = result;
     }
+
+    public void updateRequest(String request) {
+        this.request = request;
+    }
 }
diff --git a/src/main/java/team/flight/backend/repository/PostRepository.java b/src/main/java/team/flight/backend/repository/PostRepository.java
index 74b20a1..5e454a8 100644
--- a/src/main/java/team/flight/backend/repository/PostRepository.java
+++ b/src/main/java/team/flight/backend/repository/PostRepository.java
@@ -1,7 +1,10 @@
 package team.flight.backend.repository;
 
+import java.util.Optional;
+import java.util.UUID;
 import org.springframework.data.jpa.repository.JpaRepository;
 import team.flight.backend.entity.Post;
 
 public interface PostRepository extends JpaRepository<Post, Long> {
+    Optional<Post> findByIdAndSessionId(Long postId, UUID sessionId);
 }
diff --git a/src/main/java/team/flight/backend/service/PostService.java b/src/main/java/team/flight/backend/service/PostService.java
index 0e55faf..83bf618 100644
--- a/src/main/java/team/flight/backend/service/PostService.java
+++ b/src/main/java/team/flight/backend/service/PostService.java
@@ -14,20 +14,18 @@ public class PostService {
 
     private final WebClientSender webClientSender;
     private final PostRepository postRepository;
-    private final SessionIdValidator sessionIdValidator;
 
     @Transactional
-    public FirstResponse sendUserFirstRequest(UUID sessionId, String request) {
-        sessionIdValidator.validateSessionId(sessionId);
-
-        Post post = Post.builder()
+    public FirstResponse sendUserFirstRequest(UUID sessionId, Long postId, String request) {
+        Post post = postRepository.findByIdAndSessionId(postId, sessionId).orElseGet(() -> Post.builder()
                 .sessionId(sessionId)
                 .request(request)
-                .build();
-        postRepository.save(post);
+                .build());
 
-        post.updateResult(webClientSender.sendFirstRequest(request));
+        post.updateRequest(request);
+        post.updateResult(webClientSender.sendFirstRequest(request).getResult());
 
+        postRepository.save(post);
         return FirstResponse.from(post);
     }
 }
diff --git a/src/main/java/team/flight/backend/service/WebClientSender.java b/src/main/java/team/flight/backend/service/WebClientSender.java
index 0616397..76f3362 100644
--- a/src/main/java/team/flight/backend/service/WebClientSender.java
+++ b/src/main/java/team/flight/backend/service/WebClientSender.java
@@ -4,6 +4,7 @@
 import org.springframework.stereotype.Component;
 import org.springframework.web.reactive.function.client.WebClient;
 import team.flight.backend.service.dto.AiSendRequest;
+import team.flight.backend.service.dto.AiSendResponse;
 
 @Component
 @RequiredArgsConstructor
@@ -11,12 +12,12 @@ public class WebClientSender {
 
     private final WebClient webClient;
 
-    //Todo ai 서버 스펙에 맞게 변경
-    public String sendFirstRequest(String request) {
+    public AiSendResponse sendFirstRequest(String request) {
         return webClient.post()
+                .uri("/api/submit")
                 .bodyValue(AiSendRequest.from(request))
                 .retrieve()
-                .bodyToMono(String.class)
+                .bodyToMono(AiSendResponse.class)
                 .block();
     }
 }
diff --git a/src/main/java/team/flight/backend/service/dto/AiSendResponse.java b/src/main/java/team/flight/backend/service/dto/AiSendResponse.java
new file mode 100644
index 0000000..923e955
--- /dev/null
+++ b/src/main/java/team/flight/backend/service/dto/AiSendResponse.java
@@ -0,0 +1,9 @@
+package team.flight.backend.service.dto;
+
+import lombok.Getter;
+
+@Getter
+public class AiSendResponse {
+
+    private String result;
+}