diff --git a/src/main/java/com/Timo/Timo/global/auth/controller/AuthController.java b/src/main/java/com/Timo/Timo/global/auth/controller/AuthController.java
index aac9342..fc82e96 100644
--- a/src/main/java/com/Timo/Timo/global/auth/controller/AuthController.java
+++ b/src/main/java/com/Timo/Timo/global/auth/controller/AuthController.java
@@ -3,19 +3,28 @@
 import com.Timo.Timo.global.auth.handler.AuthErrorResponseWriter;
 import com.Timo.Timo.global.auth.service.AuthCodeService;
 import com.Timo.Timo.global.exception.code.ErrorCode;
+import com.Timo.Timo.global.exception.dto.ErrorDto;
 import com.Timo.Timo.global.jwt.provider.JwtTokenProvider;
 import com.fasterxml.jackson.databind.ObjectMapper;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.media.Content;
+import io.swagger.v3.oas.annotations.media.Schema;
+import io.swagger.v3.oas.annotations.responses.ApiResponse;
+import io.swagger.v3.oas.annotations.responses.ApiResponses;
+import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
 import java.io.IOException;
 import java.util.Map;
 import lombok.RequiredArgsConstructor;
 import org.springframework.http.MediaType;
-import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 
+@Tag(name = "Auth", description = "인증 관련 API")
 @RestController
 @RequestMapping("/api/auth")
 @RequiredArgsConstructor
@@ -26,8 +35,32 @@ public class AuthController {
   private final AuthErrorResponseWriter authErrorResponseWriter;
   private final ObjectMapper objectMapper;
 
-  @GetMapping("/token")
+  @Operation(
+      summary = "AccessToken 발급",
+      description = "소셜 로그인 성공 시 발급된 1회용 인증 코드(code)를 통해 AccessToken을 발급합니다. "
+          + "인증 코드는 1회 사용 후 즉시 만료됩니다."
+  )
+  @ApiResponses({
+      @ApiResponse(
+          responseCode = "200",
+          description = "AccessToken 발급 성공",
+          content = @Content(
+              mediaType = MediaType.APPLICATION_JSON_VALUE,
+              schema = @Schema(example = "{\"accessToken\": \"eyJhbGciOiJIUzI1NiJ9...\"}")
+          )
+      ),
+      @ApiResponse(
+          responseCode = "401",
+          description = "유효하지 않거나 만료된 인증 코드",
+          content = @Content(
+              mediaType = MediaType.APPLICATION_JSON_VALUE,
+              schema = @Schema(implementation = ErrorDto.class)
+          )
+      )
+  })
+  @PostMapping("/token")
   public void token(
+      @Parameter(description = "소셜 로그인 성공 시 발급된 1회용 인증 코드", required = true)
       @RequestParam String code,
       HttpServletRequest request,
       HttpServletResponse response