diff --git a/src/main/kotlin/com/back/koreaTravelGuide/common/config/RedisConfig.kt b/src/main/kotlin/com/back/koreaTravelGuide/common/config/RedisConfig.kt
index 4885ac3..d60a2a6 100644
--- a/src/main/kotlin/com/back/koreaTravelGuide/common/config/RedisConfig.kt
+++ b/src/main/kotlin/com/back/koreaTravelGuide/common/config/RedisConfig.kt
@@ -1,7 +1,10 @@
 package com.back.koreaTravelGuide.common.config
 
+import com.back.koreaTravelGuide.domain.ai.tour.dto.TourDetailResponse
+import com.back.koreaTravelGuide.domain.ai.tour.dto.TourResponse
+import com.back.koreaTravelGuide.domain.ai.weather.dto.MidForecastDto
+import com.back.koreaTravelGuide.domain.ai.weather.dto.TemperatureAndLandForecastDto
 import com.fasterxml.jackson.databind.ObjectMapper
-import com.fasterxml.jackson.databind.jsontype.BasicPolymorphicTypeValidator
 import com.fasterxml.jackson.module.kotlin.KotlinModule
 import org.springframework.cache.CacheManager
 import org.springframework.context.annotation.Bean
@@ -10,13 +13,20 @@ import org.springframework.data.redis.cache.RedisCacheConfiguration
 import org.springframework.data.redis.cache.RedisCacheManager
 import org.springframework.data.redis.connection.RedisConnectionFactory
 import org.springframework.data.redis.core.RedisTemplate
-import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer
+import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer
 import org.springframework.data.redis.serializer.RedisSerializationContext
 import org.springframework.data.redis.serializer.StringRedisSerializer
 import java.time.Duration
 
 @Configuration
 class RedisConfig {
+    @Bean
+    fun objectMapper(): ObjectMapper =
+        ObjectMapper().apply {
+            // Kotlin 모듈 등록 (data class 생성자 인식)
+            registerModule(KotlinModule.Builder().build())
+        }
+
     @Bean
     fun redisTemplate(connectionFactory: RedisConnectionFactory): RedisTemplate<String, String> {
         val template = RedisTemplate<String, String>()
@@ -33,35 +43,76 @@ class RedisConfig {
     }
 
     @Bean
-    fun cacheManager(connectionFactory: RedisConnectionFactory): CacheManager {
-        // Kotlin data class 역직렬화 지원을 위한 ObjectMapper 생성
-        val objectMapper =
-            ObjectMapper().apply {
-                // Kotlin 모듈 등록 (data class 생성자 인식)
-                registerModule(KotlinModule.Builder().build())
-                // 타입 정보 보존을 위한 검증기 설정
-                activateDefaultTyping(
-                    BasicPolymorphicTypeValidator.builder()
-                        .allowIfBaseType(Any::class.java)
-                        .build(),
-                    ObjectMapper.DefaultTyping.NON_FINAL,
+    fun cacheManager(
+        connectionFactory: RedisConnectionFactory,
+        objectMapper: ObjectMapper,
+    ): CacheManager {
+
+        // 각 캐시 타입별 Serializer 생성
+        val tourResponseSerializer = Jackson2JsonRedisSerializer<TourResponse>(objectMapper, TourResponse::class.java)
+        val tourDetailResponseSerializer = Jackson2JsonRedisSerializer<TourDetailResponse>(objectMapper, TourDetailResponse::class.java)
+
+        // List<MidForecastDto> 타입을 위한 JavaType 생성
+        val midForecastListType =
+            objectMapper.typeFactory.constructCollectionType(
+                List::class.java,
+                MidForecastDto::class.java,
+            )
+        val midForecastListSerializer = Jackson2JsonRedisSerializer<List<MidForecastDto>>(objectMapper, midForecastListType)
+
+        // List<TemperatureAndLandForecastDto> 타입을 위한 JavaType 생성
+        val tempAndLandListType =
+            objectMapper.typeFactory.constructCollectionType(
+                List::class.java,
+                TemperatureAndLandForecastDto::class.java,
+            )
+        val tempAndLandListSerializer = Jackson2JsonRedisSerializer<List<TemperatureAndLandForecastDto>>(objectMapper, tempAndLandListType)
+
+        // 공통 키 Serializer
+        val keySerializer = RedisSerializationContext.SerializationPair.fromSerializer(StringRedisSerializer())
+
+        // Tour 관련 캐시 설정 (TourResponse 타입)
+        val tourResponseConfig =
+            RedisCacheConfiguration.defaultCacheConfig()
+                .serializeKeysWith(keySerializer)
+                .serializeValuesWith(
+                    RedisSerializationContext.SerializationPair.fromSerializer(tourResponseSerializer),
                 )
-            }
+                .entryTtl(Duration.ofHours(12))
 
-        val redisCacheConfiguration =
+        // Tour 상세 캐시 설정 (TourDetailResponse 타입)
+        val tourDetailConfig =
             RedisCacheConfiguration.defaultCacheConfig()
-                .serializeKeysWith(
-                    RedisSerializationContext.SerializationPair.fromSerializer(StringRedisSerializer()),
+                .serializeKeysWith(keySerializer)
+                .serializeValuesWith(
+                    RedisSerializationContext.SerializationPair.fromSerializer(tourDetailResponseSerializer),
                 )
+                .entryTtl(Duration.ofHours(12))
+
+        // 중기예보 캐시 설정 (List<MidForecastDto> 타입)
+        val midForecastConfig =
+            RedisCacheConfiguration.defaultCacheConfig()
+                .serializeKeysWith(keySerializer)
+                .serializeValuesWith(
+                    RedisSerializationContext.SerializationPair.fromSerializer(midForecastListSerializer),
+                )
+                .entryTtl(Duration.ofHours(12))
+
+        // 기온/육상 예보 캐시 설정 (List<TemperatureAndLandForecastDto> 타입)
+        val tempAndLandConfig =
+            RedisCacheConfiguration.defaultCacheConfig()
+                .serializeKeysWith(keySerializer)
                 .serializeValuesWith(
-                    RedisSerializationContext.SerializationPair.fromSerializer(
-                        GenericJackson2JsonRedisSerializer(objectMapper),
-                    ),
+                    RedisSerializationContext.SerializationPair.fromSerializer(tempAndLandListSerializer),
                 )
                 .entryTtl(Duration.ofHours(12))
 
         return RedisCacheManager.builder(connectionFactory)
-            .cacheDefaults(redisCacheConfiguration)
+            .withCacheConfiguration("tourAreaBased", tourResponseConfig)
+            .withCacheConfiguration("tourLocationBased", tourResponseConfig)
+            .withCacheConfiguration("tourDetail", tourDetailConfig)
+            .withCacheConfiguration("weatherMidFore", midForecastConfig)
+            .withCacheConfiguration("weatherTempAndLandFore", tempAndLandConfig)
             .build()
     }
 }
diff --git a/src/main/kotlin/com/back/koreaTravelGuide/common/security/SecurityConfig.kt b/src/main/kotlin/com/back/koreaTravelGuide/common/security/SecurityConfig.kt
index 3d123ec..5e785fb 100644
--- a/src/main/kotlin/com/back/koreaTravelGuide/common/security/SecurityConfig.kt
+++ b/src/main/kotlin/com/back/koreaTravelGuide/common/security/SecurityConfig.kt
@@ -21,7 +21,8 @@ class SecurityConfig(
 ) {
     @Bean
     fun filterChain(http: HttpSecurity): SecurityFilterChain {
-        val isDev = environment.activeProfiles.contains("dev")
+        val isDev = environment.getProperty("spring.profiles.active")?.contains("dev") == true ||
+                    environment.activeProfiles.contains("dev")
 
         http {
             csrf { disable() }
diff --git a/src/main/kotlin/com/back/koreaTravelGuide/domain/ai/aiChat/controller/AiChatController.kt b/src/main/kotlin/com/back/koreaTravelGuide/domain/ai/aiChat/controller/AiChatController.kt
index bfbf1ba..c537f4f 100644
--- a/src/main/kotlin/com/back/koreaTravelGuide/domain/ai/aiChat/controller/AiChatController.kt
+++ b/src/main/kotlin/com/back/koreaTravelGuide/domain/ai/aiChat/controller/AiChatController.kt
@@ -1,6 +1,7 @@
 package com.back.koreaTravelGuide.domain.ai.aiChat.controller
 
 import com.back.koreaTravelGuide.common.ApiResponse
+import com.back.koreaTravelGuide.common.security.getUserId
 import com.back.koreaTravelGuide.domain.ai.aiChat.dto.AiChatRequest
 import com.back.koreaTravelGuide.domain.ai.aiChat.dto.AiChatResponse
 import com.back.koreaTravelGuide.domain.ai.aiChat.dto.SessionMessagesResponse
@@ -9,6 +10,7 @@ import com.back.koreaTravelGuide.domain.ai.aiChat.dto.UpdateSessionTitleRequest
 import com.back.koreaTravelGuide.domain.ai.aiChat.dto.UpdateSessionTitleResponse
 import com.back.koreaTravelGuide.domain.ai.aiChat.service.AiChatService
 import org.springframework.http.ResponseEntity
+import org.springframework.security.core.Authentication
 import org.springframework.web.bind.annotation.DeleteMapping
 import org.springframework.web.bind.annotation.GetMapping
 import org.springframework.web.bind.annotation.PatchMapping
@@ -16,7 +18,6 @@ import org.springframework.web.bind.annotation.PathVariable
 import org.springframework.web.bind.annotation.PostMapping
 import org.springframework.web.bind.annotation.RequestBody
 import org.springframework.web.bind.annotation.RequestMapping
-import org.springframework.web.bind.annotation.RequestParam
 import org.springframework.web.bind.annotation.RestController
 
 @RestController
@@ -26,8 +27,9 @@ class AiChatController(
 ) {
     @GetMapping("/sessions")
     fun getSessions(
-        @RequestParam userId: Long,
+        authentication: Authentication?,
     ): ResponseEntity<ApiResponse<List<SessionsResponse>>> {
+        val userId = authentication?.getUserId() ?: 1L  // dev 모드: 기본 userId=1
         val sessions =
             aiChatService.getSessions(userId).map {
                 SessionsResponse.from(it)
@@ -37,8 +39,9 @@ class AiChatController(
 
     @PostMapping("/sessions")
     fun createSession(
-        @RequestParam userId: Long,
+        authentication: Authentication?,
     ): ResponseEntity<ApiResponse<SessionsResponse>> {
+        val userId = authentication?.getUserId() ?: 1L  // dev 모드: 기본 userId=1
         val session = aiChatService.createSession(userId)
         val response = SessionsResponse.from(session)
         return ResponseEntity.ok(ApiResponse("채팅방이 성공적으로 생성되었습니다.", response))
@@ -47,8 +50,9 @@ class AiChatController(
     @DeleteMapping("/sessions/{sessionId}")
     fun deleteSession(
         @PathVariable sessionId: Long,
-        @RequestParam userId: Long,
+        authentication: Authentication?,
     ): ResponseEntity<ApiResponse<Unit>> {
+        val userId = authentication?.getUserId() ?: 1L  // dev 모드: 기본 userId=1
         aiChatService.deleteSession(sessionId, userId)
         return ResponseEntity.ok(ApiResponse("채팅방이 성공적으로 삭제되었습니다."))
     }
@@ -56,8 +60,9 @@ class AiChatController(
     @GetMapping("/sessions/{sessionId}/messages")
     fun getSessionMessages(
         @PathVariable sessionId: Long,
-        @RequestParam userId: Long,
+        authentication: Authentication?,
     ): ResponseEntity<ApiResponse<List<SessionMessagesResponse>>> {
+        val userId = authentication?.getUserId() ?: 1L  // dev 모드: 기본 userId=1
         val messages = aiChatService.getSessionMessages(sessionId, userId)
         val response =
             messages.map {
@@ -69,9 +74,10 @@ class AiChatController(
     @PostMapping("/sessions/{sessionId}/messages")
     fun sendMessage(
         @PathVariable sessionId: Long,
-        @RequestParam userId: Long,
+        authentication: Authentication?,
         @RequestBody request: AiChatRequest,
     ): ResponseEntity<ApiResponse<AiChatResponse>> {
+        val userId = authentication?.getUserId() ?: 1L  // dev 모드: 기본 userId=1
         val (userMessage, aiMessage) = aiChatService.sendMessage(sessionId, userId, request.message)
         val response =
             AiChatResponse(
@@ -84,9 +90,10 @@ class AiChatController(
     @PatchMapping("/sessions/{sessionId}/title")
     fun updateSessionTitle(
         @PathVariable sessionId: Long,
-        @RequestParam userId: Long,
+        authentication: Authentication?,
         @RequestBody request: UpdateSessionTitleRequest,
     ): ResponseEntity<ApiResponse<UpdateSessionTitleResponse>> {
+        val userId = authentication?.getUserId() ?: 1L  // dev 모드: 기본 userId=1
         val updatedSession = aiChatService.updateSessionTitle(sessionId, userId, request.newTitle)
         val response =
             UpdateSessionTitleResponse(
diff --git a/src/main/kotlin/com/back/koreaTravelGuide/domain/ai/aiChat/tool/TourTool.kt b/src/main/kotlin/com/back/koreaTravelGuide/domain/ai/aiChat/tool/TourTool.kt
index fa792f0..7dc3194 100644
--- a/src/main/kotlin/com/back/koreaTravelGuide/domain/ai/aiChat/tool/TourTool.kt
+++ b/src/main/kotlin/com/back/koreaTravelGuide/domain/ai/aiChat/tool/TourTool.kt
@@ -5,6 +5,7 @@ import com.back.koreaTravelGuide.common.logging.log
 import com.back.koreaTravelGuide.domain.ai.tour.dto.TourDetailParams
 import com.back.koreaTravelGuide.domain.ai.tour.dto.TourLocationBasedParams
 import com.back.koreaTravelGuide.domain.ai.tour.service.TourService
+import com.fasterxml.jackson.databind.ObjectMapper
 import org.springframework.ai.tool.annotation.Tool
 import org.springframework.ai.tool.annotation.ToolParam
 import org.springframework.stereotype.Component
@@ -12,6 +13,7 @@ import org.springframework.stereotype.Component
 @Component
 class TourTool(
     private val tourService: TourService,
+    private val objectMapper: ObjectMapper,
 ) {
     /**
      * fetchTours - 지역기반 관광정보 조회
@@ -47,8 +49,14 @@ class TourTool(
         val tourParams = tourService.parseParams(contentTypeId, areaAndSigunguCode)
         val tourInfo = tourService.fetchTours(tourParams)
 
-        log.info("✅ [TOOL RESULT] getAreaBasedTourInfo - 결과: ${tourInfo.toString().take(100)}...")
-        return tourInfo.toString() ?: "지역기반 관광정보 조회를 가져올 수 없습니다."
+        return try {
+            val result = tourInfo.let { objectMapper.writeValueAsString(it) }
+            log.info("✅ [TOOL RESULT] getAreaBasedTourInfo - 결과: ${result.take(100)}...")
+            result
+        } catch (e: Exception) {
+            log.error("❌ [TOOL ERROR] getAreaBasedTourInfo - 예외 발생", e)
+            "지역기반 관광정보 조회를 가져올 수 없습니다."
+        }
     }
 
     /**
@@ -98,8 +106,14 @@ class TourTool(
         val locationBasedParams = TourLocationBasedParams(mapX, mapY, radius)
         val tourLocationBasedInfo = tourService.fetchLocationBasedTours(tourParams, locationBasedParams)
 
-        log.info("✅ [TOOL RESULT] getLocationBasedTourInfo - 결과: ${tourLocationBasedInfo.toString().take(100)}...")
-        return tourLocationBasedInfo.toString() ?: "위치기반 관광정보 조회를 가져올 수 없습니다."
+        return try {
+            val result = tourLocationBasedInfo.let { objectMapper.writeValueAsString(it) }
+            log.info("✅ [TOOL RESULT] getLocationBasedTourInfo - 결과: ${result.take(100)}...")
+            result
+        } catch (e: Exception) {
+            log.error("❌ [TOOL ERROR] getLocationBasedTourInfo - 예외 발생", e)
+            "위치기반 관광정보 조회를 가져올 수 없습니다."
+        }
     }
 
     /**
@@ -123,7 +137,13 @@ class TourTool(
         val tourDetailParams = TourDetailParams(contentId)
         val tourDetailInfo = tourService.fetchTourDetail(tourDetailParams)
 
-        log.info("✅ [TOOL RESULT] getTourDetailInfo - 결과: ${tourDetailInfo.toString().take(100)}...")
-        return tourDetailInfo.toString() ?: "관광정보 상세조회를 가져올 수 없습니다."
+        return try {
+            val result = tourDetailInfo.let { objectMapper.writeValueAsString(it) }
+            log.info("✅ [TOOL RESULT] getTourDetailInfo - 결과: ${result.take(100)}...")
+            result
+        } catch (e: Exception) {
+            log.error("❌ [TOOL ERROR] getTourDetailInfo - 예외 발생", e)
+            "관광정보 상세조회를 가져올 수 없습니다."
+        }
     }
 }
diff --git a/src/main/kotlin/com/back/koreaTravelGuide/domain/ai/tour/dto/TourResponse.kt b/src/main/kotlin/com/back/koreaTravelGuide/domain/ai/tour/dto/TourResponse.kt
index f058aaa..c250e6d 100644
--- a/src/main/kotlin/com/back/koreaTravelGuide/domain/ai/tour/dto/TourResponse.kt
+++ b/src/main/kotlin/com/back/koreaTravelGuide/domain/ai/tour/dto/TourResponse.kt
@@ -1,5 +1,7 @@
 package com.back.koreaTravelGuide.domain.ai.tour.dto
 
+import com.fasterxml.jackson.annotation.JsonProperty
+
 /**
  * 9.27 양현준
  * 관광 정보 응답 DTO
@@ -41,7 +43,9 @@ data class TourItem(
     // 시군구코드
     val sigunguCode: String?,
     // 법정동 시도 코드
+    @get:JsonProperty("lDongRegnCd")
     val lDongRegnCd: String?,
     // 법정동 시군구 코드
+    @get:JsonProperty("lDongSignguCd")
     val lDongSignguCd: String?,
 )