diff --git a/Plugins/EnvPlugin/ProjectDescriptionHelpers/InfoPlist.swift b/Plugins/EnvPlugin/ProjectDescriptionHelpers/InfoPlist.swift
index 73a7f17..7661742 100644
--- a/Plugins/EnvPlugin/ProjectDescriptionHelpers/InfoPlist.swift
+++ b/Plugins/EnvPlugin/ProjectDescriptionHelpers/InfoPlist.swift
@@ -31,9 +31,10 @@ public extension Project {
         "NSAppTransportSecurity": .dictionary([
             "NSAllowsArbitraryLoads": .boolean(true)
         ]),
-        "ITSAppUsesNonExemptEncryption": .boolean(false)
+        "ITSAppUsesNonExemptEncryption": .boolean(false),
+        "BASE_URL": .string("$(BASE_URL)")
     ]
-    
+
     static let demoInfoPlist: [String: Plist.Value] = [
         "CFBundleShortVersionString": .string("1.0.0"),
         "CFBundleDevelopmentRegion": .string("ko"),
@@ -57,9 +58,10 @@ public extension Project {
         "NSAppTransportSecurity": .dictionary([
             "NSAllowsArbitraryLoads": .boolean(true)
         ]),
-        "ITSAppUsesNonExemptEncryption": .boolean(false)
+        "ITSAppUsesNonExemptEncryption": .boolean(false),
+        "BASE_URL": .string("$(BASE_URL)")
     ]
-    
+
     static let framework: InfoPlist = .extendingDefault(with: [
         "CFBundlePackageType": "FMWK"
     ])
diff --git a/Plugins/EnvPlugin/ProjectDescriptionHelpers/Settings+Extension.swift b/Plugins/EnvPlugin/ProjectDescriptionHelpers/Settings+Extension.swift
index 1af74fa..180bb54 100644
--- a/Plugins/EnvPlugin/ProjectDescriptionHelpers/Settings+Extension.swift
+++ b/Plugins/EnvPlugin/ProjectDescriptionHelpers/Settings+Extension.swift
@@ -12,7 +12,7 @@ public extension Settings {
     static let frameworkSettings: Settings = .settings(
         base: [
             "SKIP_INSTALL": "YES",
-            "BUILD_LIBRARY_FOR_DISTRIBUTION": "YES",
+            "BUILD_LIBRARY_FOR_DISTRIBUTION": "NO",
             "DEFINES_MODULE": "YES",
             "ENABLE_BITCODE": "NO",
             "IPHONEOS_DEPLOYMENT_TARGET": .string(Environment.deploymentTarget),
diff --git a/Projects/App/Project.swift b/Projects/App/Project.swift
index eb201ca..c029072 100644
--- a/Projects/App/Project.swift
+++ b/Projects/App/Project.swift
@@ -21,6 +21,7 @@ let project = Project.makeModule(
             scripts: [.swiftLint],
             dependencies: [
                 .data,
+                .Modules.networks,
                 .Features.rootFeature
             ],
             settings: .appSettings()
diff --git a/Projects/Data/Sources/DI/AuthRepositoryFactory.swift b/Projects/Data/Sources/DI/AuthRepositoryFactory.swift
new file mode 100644
index 0000000..257ca89
--- /dev/null
+++ b/Projects/Data/Sources/DI/AuthRepositoryFactory.swift
@@ -0,0 +1,19 @@
+//
+//  AuthRepositoryFactory.swift
+//  Data
+//
+//  Created by kimnahun on 1/21/26.
+//  Copyright © 2026 NDGL-iOS. All rights reserved.
+//
+
+import Domain
+import Foundation
+import Networks
+
+public func makeAuthService() -> AuthServiceProtocol {
+    AuthService()
+}
+
+public func makeAuthRepository(authService: AuthServiceProtocol) -> AuthRepositoryProtocol {
+    AuthRepository(authService: authService)
+}
diff --git a/Projects/Data/Sources/Repository/Auth/AuthRepository.swift b/Projects/Data/Sources/Repository/Auth/AuthRepository.swift
new file mode 100644
index 0000000..9f778dc
--- /dev/null
+++ b/Projects/Data/Sources/Repository/Auth/AuthRepository.swift
@@ -0,0 +1,40 @@
+//
+//  AuthRepository.swift
+//  Data
+//
+//  Created by kimnahun on 1/21/26.
+//  Copyright © 2026 NDGL-iOS. All rights reserved.
+//
+
+import Domain
+import Foundation
+import Networks
+
+public final class AuthRepository: AuthRepositoryProtocol, @unchecked Sendable {
+    private let authService: AuthServiceProtocol
+
+    public init(authService: AuthServiceProtocol) {
+        self.authService = authService
+    }
+
+    public func signup(info: SignupInfo) async -> Result<SignupResult, SignupError> {
+        let request = SignupRequest(fcmToken: info.fcmToken)
+        let result = await authService.signup(request: request)
+
+        switch result {
+        case .success(let response):
+            let signupResult = SignupResult(
+                uuid: response.uuid,
+                accessToken: response.accessToken,
+                nickname: response.nickname
+            )
+            return .success(signupResult)
+
+        case .failure(let error):
+            return .failure(error)
+
+        case .networkFailure(let networkError):
+            return .failure(.networkError(message: networkError.localizedDescription))
+        }
+    }
+}
diff --git a/Projects/Data/Sources/Transform/Auth/AuthTransform.swift b/Projects/Data/Sources/Transform/Auth/AuthTransform.swift
new file mode 100644
index 0000000..8d76bac
--- /dev/null
+++ b/Projects/Data/Sources/Transform/Auth/AuthTransform.swift
@@ -0,0 +1,27 @@
+//
+//  AuthTransform.swift
+//  Data
+//
+//  Created by kimnahun on 1/21/26.
+//  Copyright © 2026 NDGL-iOS. All rights reserved.
+//
+
+import Domain
+import Foundation
+import Networks
+
+extension SignupResult {
+    init(from response: SignupResponse) {
+        self.init(
+            uuid: response.uuid,
+            accessToken: response.accessToken,
+            nickname: response.nickname
+        )
+    }
+}
+
+extension SignupRequest {
+    init(from info: SignupInfo) {
+        self.init(fcmToken: info.fcmToken)
+    }
+}
diff --git a/Projects/Domain/Sources/Interface/Auth/AuthRepositoryProtocol.swift b/Projects/Domain/Sources/Interface/Auth/AuthRepositoryProtocol.swift
new file mode 100644
index 0000000..8e52a0f
--- /dev/null
+++ b/Projects/Domain/Sources/Interface/Auth/AuthRepositoryProtocol.swift
@@ -0,0 +1,13 @@
+//
+//  AuthRepositoryProtocol.swift
+//  Domain
+//
+//  Created by kimnahun on 1/21/26.
+//  Copyright © 2026 NDGL-iOS. All rights reserved.
+//
+
+import Foundation
+
+public protocol AuthRepositoryProtocol: Sendable {
+    func signup(info: SignupInfo) async -> Result<SignupResult, SignupError>
+}
diff --git a/Projects/Domain/Sources/Model/Auth/SignupError.swift b/Projects/Domain/Sources/Model/Auth/SignupError.swift
new file mode 100644
index 0000000..c0dcd9b
--- /dev/null
+++ b/Projects/Domain/Sources/Model/Auth/SignupError.swift
@@ -0,0 +1,26 @@
+//
+//  SignupError.swift
+//  Domain
+//
+//  Created by kimnahun on 1/21/26.
+//  Copyright © 2026 NDGL-iOS. All rights reserved.
+//
+
+import Foundation
+
+// MARK: - SignupField
+
+public enum SignupField: Sendable, Equatable {
+    case fcmToken
+    case email
+    case unknown(String)
+}
+
+// MARK: - SignupError
+
+public enum SignupError: Error, Sendable {
+    case validationFailed(field: SignupField, message: String)
+    case serverError(message: String?)
+    case networkError(message: String)
+    case unknown(code: String, message: String)
+}
diff --git a/Projects/Domain/Sources/Model/Auth/SignupInfo.swift b/Projects/Domain/Sources/Model/Auth/SignupInfo.swift
new file mode 100644
index 0000000..67ae93b
--- /dev/null
+++ b/Projects/Domain/Sources/Model/Auth/SignupInfo.swift
@@ -0,0 +1,17 @@
+//
+//  SignupInfo.swift
+//  Domain
+//
+//  Created by kimnahun on 1/21/26.
+//  Copyright © 2026 NDGL-iOS. All rights reserved.
+//
+
+import Foundation
+
+public struct SignupInfo: Sendable {
+    public let fcmToken: String
+
+    public init(fcmToken: String) {
+        self.fcmToken = fcmToken
+    }
+}
diff --git a/Projects/Domain/Sources/Model/Auth/SignupResult.swift b/Projects/Domain/Sources/Model/Auth/SignupResult.swift
new file mode 100644
index 0000000..775fabb
--- /dev/null
+++ b/Projects/Domain/Sources/Model/Auth/SignupResult.swift
@@ -0,0 +1,21 @@
+//
+//  SignupResult.swift
+//  Domain
+//
+//  Created by kimnahun on 1/21/26.
+//  Copyright © 2026 NDGL-iOS. All rights reserved.
+//
+
+import Foundation
+
+public struct SignupResult: Sendable {
+    public let uuid: String
+    public let accessToken: String
+    public let nickname: String
+
+    public init(uuid: String, accessToken: String, nickname: String) {
+        self.uuid = uuid
+        self.accessToken = accessToken
+        self.nickname = nickname
+    }
+}
diff --git a/Projects/Modules/Networks/Project.swift b/Projects/Modules/Networks/Project.swift
index 2414eb4..aab2aec 100644
--- a/Projects/Modules/Networks/Project.swift
+++ b/Projects/Modules/Networks/Project.swift
@@ -8,6 +8,7 @@
 import ProjectDescription
 import ProjectDescriptionHelpers
 import DependencyPlugin
+import EnvPlugin
 
 let project = Project.makeModule(
     name: "Networks",
@@ -15,11 +16,30 @@ let project = Project.makeModule(
         .makeFrameworkTarget(
             name: "Networks",
             dependencies: [
-                .core
+                .core,
+                .domain
             ],
             scripts: [.swiftLint],
             isStatic: true,
             hasResources: false
+        ),
+        .target(
+            name: "NetworksTests",
+            destinations: .iOS,
+            product: .unitTests,
+            bundleId: "org.yapp.NDGL.NetworksTests",
+            deploymentTargets: .iOS("17.0"),
+            infoPlist: .extendingDefault(with: [
+                "BASE_URL": .string("$(BASE_URL)")
+            ]),
+            sources: ["Tests/**"],
+            dependencies: [
+                .target(name: "Networks")
+            ],
+            settings: .settings(configurations: [
+                .debug(name: "Debug", xcconfig: .relativeToRoot("xcconfigs/Debug.xcconfig")),
+                .release(name: "Release", xcconfig: .relativeToRoot("xcconfigs/Release.xcconfig"))
+            ])
         )
     ]
 )
diff --git a/Projects/Modules/Networks/Sources/API/APIEmpty.swift b/Projects/Modules/Networks/Sources/API/APIEmpty.swift
deleted file mode 100644
index cc161f1..0000000
--- a/Projects/Modules/Networks/Sources/API/APIEmpty.swift
+++ /dev/null
@@ -1,8 +0,0 @@
-//
-//  APIEmpty.swift
-//  27th-App-Team-1-iOSManifests
-//
-//  Created by 최안용 on 1/13/26.
-//
-
-import Foundation
diff --git a/Projects/Modules/Networks/Sources/Base/BaseResponse.swift b/Projects/Modules/Networks/Sources/Base/BaseResponse.swift
new file mode 100644
index 0000000..0f398d6
--- /dev/null
+++ b/Projects/Modules/Networks/Sources/Base/BaseResponse.swift
@@ -0,0 +1,15 @@
+//
+//  BaseResponse.swift
+//  Networks
+//
+//  Created by kimnahun on 1/19/26.
+//  Copyright © 2026 NDGL-iOS. All rights reserved.
+//
+
+import Foundation
+                                                                                                                      
+struct BaseResponse<T: Decodable & Sendable>: Decodable, Sendable {
+    let code: String
+    let message: String
+    let data: T?
+} 
diff --git a/Projects/Modules/Networks/Sources/Base/EmptyResponse.swift b/Projects/Modules/Networks/Sources/Base/EmptyResponse.swift
new file mode 100644
index 0000000..841084e
--- /dev/null
+++ b/Projects/Modules/Networks/Sources/Base/EmptyResponse.swift
@@ -0,0 +1,11 @@
+//
+//  EmptyResponse.swift
+//  Networks
+//
+//  Created by kimnahun on 1/19/26.
+//  Copyright © 2026 NDGL-iOS. All rights reserved.
+//
+
+import Foundation
+
+struct EmptyResponse: Decodable, Sendable {} 
diff --git a/Projects/Modules/Networks/Sources/Base/ErrorResponse.swift b/Projects/Modules/Networks/Sources/Base/ErrorResponse.swift
new file mode 100644
index 0000000..f154a75
--- /dev/null
+++ b/Projects/Modules/Networks/Sources/Base/ErrorResponse.swift
@@ -0,0 +1,20 @@
+//
+//  ErrorResponse.swift
+//  Networks
+//
+//  Created by kimnahun on 1/19/26.
+//  Copyright © 2026 NDGL-iOS. All rights reserved.
+//
+
+import Foundation
+                                                                                                                      
+public struct ErrorResponse: Decodable, Sendable {
+    public let code: String?
+    public let message: String?
+    public let errors: [ErrorDetail]?
+
+    public struct ErrorDetail: Decodable, Sendable {
+        public let field: String?
+        public let message: String?
+    }
+}   
diff --git a/Projects/Modules/Networks/Sources/Base/NBaseEmpty.swift b/Projects/Modules/Networks/Sources/Base/NBaseEmpty.swift
deleted file mode 100644
index c0b8f52..0000000
--- a/Projects/Modules/Networks/Sources/Base/NBaseEmpty.swift
+++ /dev/null
@@ -1,8 +0,0 @@
-//
-//  NBaseEmpty.swift
-//  27th-App-Team-1-iOSManifests
-//
-//  Created by 최안용 on 1/13/26.
-//
-
-import Foundation
diff --git a/Projects/Modules/Networks/Sources/Base/NetworkError.swift b/Projects/Modules/Networks/Sources/Base/NetworkError.swift
new file mode 100644
index 0000000..f1c1bb3
--- /dev/null
+++ b/Projects/Modules/Networks/Sources/Base/NetworkError.swift
@@ -0,0 +1,26 @@
+//
+//  NetworkError.swift
+//  Networks
+//
+//  Created by kimnahun on 1/19/26.
+//  Copyright © 2026 NDGL-iOS. All rights reserved.
+//
+
+import Foundation
+
+public enum NetworkError: Error, Sendable {
+    case connectionFailed
+    case decodingFailed
+    case unknown(String)
+
+    public var message: String {
+        switch self {
+        case .connectionFailed:
+            return "네트워크 연결을 확인해주세요"
+        case .decodingFailed:
+            return "데이터 처리 중 오류가 발생했습니다"
+        case .unknown(let description):
+            return "알 수 없는 오류: \(description)"
+        }
+    }
+}  
diff --git a/Projects/Modules/Networks/Sources/Base/NetworkResult.swift b/Projects/Modules/Networks/Sources/Base/NetworkResult.swift
new file mode 100644
index 0000000..f2c5593
--- /dev/null
+++ b/Projects/Modules/Networks/Sources/Base/NetworkResult.swift
@@ -0,0 +1,16 @@
+//
+//  NetworkResult.swift
+//  Networks
+//
+//  Created by kimnahun on 1/19/26.
+//  Copyright © 2026 NDGL-iOS. All rights reserved.
+//
+
+import Foundation
+
+@frozen
+public enum NetworkResult<T: Sendable, E: Error & Sendable>: Sendable {
+    case success(T)
+    case failure(E)
+    case networkFailure(NetworkError)
+}
diff --git a/Projects/Modules/Networks/Sources/DTO/Auth/SignupDTO.swift b/Projects/Modules/Networks/Sources/DTO/Auth/SignupDTO.swift
new file mode 100644
index 0000000..1389403
--- /dev/null
+++ b/Projects/Modules/Networks/Sources/DTO/Auth/SignupDTO.swift
@@ -0,0 +1,37 @@
+//
+//  Signin.swift
+//  Networks
+//
+//  Created by kimnahun on 1/19/26.
+//  Copyright © 2026 NDGL-iOS. All rights reserved.
+//
+
+import Foundation
+                                                                                                   
+public struct SignupRequest: Encodable, Sendable {
+    public let fcmToken: String
+    public let deviceModel: String?
+    public let deviceOs: String?
+    public let deviceOsVersion: String?
+    public let appVersion: String?
+
+    public init(
+        fcmToken: String,
+        deviceModel: String? = nil,
+        deviceOs: String? = nil,
+        deviceOsVersion: String? = nil,
+        appVersion: String? = nil
+    ) {
+        self.fcmToken = fcmToken
+        self.deviceModel = deviceModel
+        self.deviceOs = deviceOs
+        self.deviceOsVersion = deviceOsVersion
+        self.appVersion = appVersion
+    }
+}
+
+public struct SignupResponse: Decodable, Sendable {
+    public let uuid: String
+    public let accessToken: String
+    public let nickname: String
+}
diff --git a/Projects/Modules/Networks/Sources/Entity/EntityEmpty.swift b/Projects/Modules/Networks/Sources/Entity/EntityEmpty.swift
deleted file mode 100644
index be4230d..0000000
--- a/Projects/Modules/Networks/Sources/Entity/EntityEmpty.swift
+++ /dev/null
@@ -1,8 +0,0 @@
-//
-//  EntityEmpty.swift
-//  27th-App-Team-1-iOSManifests
-//
-//  Created by 최안용 on 1/13/26.
-//
-
-import Foundation
diff --git a/Projects/Modules/Networks/Sources/ErrorMapping/SignupError+Mapping.swift b/Projects/Modules/Networks/Sources/ErrorMapping/SignupError+Mapping.swift
new file mode 100644
index 0000000..2bd5200
--- /dev/null
+++ b/Projects/Modules/Networks/Sources/ErrorMapping/SignupError+Mapping.swift
@@ -0,0 +1,46 @@
+//
+//  SignupError+Mapping.swift
+//  Networks
+//
+//  Created by kimnahun on 1/21/26.
+//  Copyright © 2026 NDGL-iOS. All rights reserved.
+//
+
+import Domain
+import Foundation
+
+extension SignupError {
+    public init(code: String, message: String, errors: [ErrorResponse.ErrorDetail]) {
+        let fieldMessage = errors.first?.message ?? message
+
+        let field: SignupField = {
+            guard let fieldString = errors.first?.field else {
+                return .unknown("unknown")
+            }
+            switch fieldString {
+            case "fcmToken": return .fcmToken
+            case "email":    return .email
+            default:         return .unknown(fieldString)
+            }
+        }()
+
+        switch code {
+        case "COMM-01-005":
+            self = .validationFailed(field: field, message: fieldMessage)
+        case "COMM-08-001":
+            self = .serverError(message: message)
+        default:
+            self = .unknown(code: code, message: message)
+        }
+    }
+}
+
+extension SignupField {
+    public init(rawValue: String) {
+        switch rawValue {
+        case "fcmToken": self = .fcmToken
+        case "email":    self = .email
+        default:         self = .unknown(rawValue)
+        }
+    }
+}
diff --git a/Projects/Modules/Networks/Sources/Extensions/MoyaProvider+Async.swift b/Projects/Modules/Networks/Sources/Extensions/MoyaProvider+Async.swift
new file mode 100644
index 0000000..5599e7a
--- /dev/null
+++ b/Projects/Modules/Networks/Sources/Extensions/MoyaProvider+Async.swift
@@ -0,0 +1,118 @@
+//
+//  MoyaProvider+Async.swift
+//  Networks
+//
+//  Created by kimnahun on 1/19/26.
+//  Copyright © 2026 NDGL-iOS. All rights reserved.
+//
+
+import Foundation
+import Moya
+
+extension MoyaProvider {
+    private static var successCode: String { "2000" }
+
+    func request<T: Decodable & Sendable, E: Error & Sendable>(
+        _ target: Target,
+        errorMapper: @escaping @Sendable (String, String, [ErrorResponse.ErrorDetail]) -> E
+    ) async -> NetworkResult<T, E> {
+        NetworkLogger.logRequest(target)
+
+        return await withCheckedContinuation { continuation in
+            self.request(target) { result in
+                switch result {
+                case .success(let response):
+                    NetworkLogger.logResponse(response)
+
+                    do {
+                        let baseResponse = try JSONDecoder().decode(
+                            BaseResponse<T>.self,
+                            from: response.data
+                        )
+
+                        if baseResponse.code == Self.successCode {
+                            guard let data = baseResponse.data else {
+                                continuation.resume(returning: .networkFailure(.decodingFailed))
+                                return
+                            }
+                            continuation.resume(returning: .success(data))
+                        } else {
+                            let errorResponse = try JSONDecoder().decode(
+                                ErrorResponse.self,
+                                from: response.data
+                            )
+                            let apiError = errorMapper(
+                                errorResponse.code ?? "",
+                                errorResponse.message ?? "",
+                                errorResponse.errors ?? []
+                            )
+                            continuation.resume(returning: .failure(apiError))
+                        }
+                    } catch {
+                        continuation.resume(returning: .networkFailure(.decodingFailed))
+                    }
+
+                case .failure(let moyaError):
+                    NetworkLogger.logError(moyaError)
+                    let networkError = Self.mapMoyaError(moyaError)
+                    continuation.resume(returning: .networkFailure(networkError))
+                }
+            }
+        }
+    }
+
+    func requestPlain<E: Error & Sendable>(
+        _ target: Target,
+        errorMapper: @escaping @Sendable (String, String, [ErrorResponse.ErrorDetail]) -> E
+    ) async -> NetworkResult<Void, E> {
+        NetworkLogger.logRequest(target)
+
+        return await withCheckedContinuation { continuation in
+            self.request(target) { result in
+                switch result {
+                case .success(let response):
+                    NetworkLogger.logResponse(response)
+
+                    do {
+                        let baseResponse = try JSONDecoder().decode(
+                            BaseResponse<EmptyResponse>.self,
+                            from: response.data
+                        )
+
+                        if baseResponse.code == Self.successCode {
+                            continuation.resume(returning: .success(()))
+                        } else {
+                            let errorResponse = try JSONDecoder().decode(
+                                ErrorResponse.self,
+                                from: response.data
+                            )
+                            let apiError = errorMapper(
+                                errorResponse.code ?? "",
+                                errorResponse.message ?? "",
+                                errorResponse.errors ?? []
+                            )
+                            continuation.resume(returning: .failure(apiError))
+                        }
+                    } catch {
+                        continuation.resume(returning: .networkFailure(.decodingFailed))
+                    }
+
+                case .failure(let moyaError):
+                    NetworkLogger.logError(moyaError)
+                    let networkError = Self.mapMoyaError(moyaError)
+                    continuation.resume(returning: .networkFailure(networkError))
+                }
+            }
+        }
+    }
+
+    private static func mapMoyaError(_ error: MoyaError) -> NetworkError {
+        switch error {
+        case .underlying(let nsError as NSError, _)
+            where nsError.domain == NSURLErrorDomain:
+            return .connectionFailed
+        default:
+            return .unknown(error.localizedDescription)
+        }
+    }
+}
diff --git a/Projects/Modules/Networks/Sources/Foundation/NetworkConfiguration.swift b/Projects/Modules/Networks/Sources/Foundation/NetworkConfiguration.swift
new file mode 100644
index 0000000..5b7d197
--- /dev/null
+++ b/Projects/Modules/Networks/Sources/Foundation/NetworkConfiguration.swift
@@ -0,0 +1,24 @@
+//
+//  NetworkConfiguration.swift
+//  Networks
+//
+//  Created by kimnahun on 1/19/26.
+//  Copyright © 2026 NDGL-iOS. All rights reserved.
+//
+
+import Foundation
+
+public enum NetworkConfiguration {
+    public static var baseURL: URL {
+        // 테스트 환경에서는 Bundle.main이 Xcode 도구를 가리키므로 테스트 번들에서 찾음
+        let bundle = Bundle.allBundles.first { $0.bundlePath.hasSuffix(".xctest") } ?? Bundle.main
+
+        guard let urlString = bundle.infoDictionary?["BASE_URL"] as? String,
+              let url = URL(string: urlString) else {
+            fatalError("BASE_URL not found in Info.plist")
+        }
+        return url
+    }
+}
+
+
diff --git a/Projects/Modules/Networks/Sources/Logger/NetworkLogger.swift b/Projects/Modules/Networks/Sources/Logger/NetworkLogger.swift
new file mode 100644
index 0000000..4789893
--- /dev/null
+++ b/Projects/Modules/Networks/Sources/Logger/NetworkLogger.swift
@@ -0,0 +1,75 @@
+//
+//  NetworkLogger.swift
+//  Networks
+//
+//  Created by kimnahun on 1/21/26.
+//  Copyright © 2026 NDGL-iOS. All rights reserved.
+//
+
+import Foundation
+import Moya
+
+enum NetworkLogger {
+
+    static func logRequest(_ target: TargetType) {
+        #if DEBUG
+        print("──────────────────────────────────────")
+        print("[REQUEST] \(target.method.rawValue) \(target.baseURL)\(target.path)")
+        if let body = requestBody(from: target.task) {
+            print("[BODY] \(body)")
+        }
+        print("──────────────────────────────────────")
+        #endif
+    }
+
+    static func logResponse(_ response: Response) {
+        #if DEBUG
+        let statusCode = response.statusCode
+        let url = response.request?.url?.absoluteString ?? ""
+
+        print("──────────────────────────────────────")
+        print("[RESPONSE] \(statusCode) \(url)")
+        if let json = try? JSONSerialization.jsonObject(with: response.data),
+           let prettyData = try? JSONSerialization.data(withJSONObject: json, options: .prettyPrinted),
+           let prettyString = String(data: prettyData, encoding: .utf8) {
+            print("[DATA]\n\(prettyString)")
+        }
+        print("──────────────────────────────────────")
+        #endif
+    }
+
+    static func logError(_ error: MoyaError) {
+        #if DEBUG
+        print("──────────────────────────────────────")
+        print("[ERROR] \(error.localizedDescription)")
+        print("──────────────────────────────────────")
+        #endif
+    }
+
+    private static func requestBody(from task: Moya.Task) -> String? {
+        switch task {
+        case .requestParameters(let parameters, _):
+            return parameters.description
+        case .requestJSONEncodable(let encodable):
+            if let data = try? JSONEncoder().encode(AnyEncodable(encodable)),
+               let string = String(data: data, encoding: .utf8) {
+                return string
+            }
+            return nil
+        default:
+            return nil
+        }
+    }
+}
+
+private struct AnyEncodable: Encodable {
+    private let encode: (Encoder) throws -> Void
+
+    init<T: Encodable>(_ value: T) {
+        encode = value.encode
+    }
+
+    func encode(to encoder: Encoder) throws {
+        try encode(encoder)
+    }
+}
diff --git a/Projects/Modules/Networks/Sources/Service/AuthService.swift b/Projects/Modules/Networks/Sources/Service/AuthService.swift
new file mode 100644
index 0000000..3dc7084
--- /dev/null
+++ b/Projects/Modules/Networks/Sources/Service/AuthService.swift
@@ -0,0 +1,27 @@
+//
+//  AuthService.swift
+//  Networks
+//
+//  Created by kimnahun on 1/19/26.
+//  Copyright © 2026 NDGL-iOS. All rights reserved.
+//
+
+import Domain
+import Foundation
+import Moya
+
+public protocol AuthServiceProtocol: Sendable {
+    func signup(request: SignupRequest) async -> NetworkResult<SignupResponse, SignupError>
+}
+
+public final class AuthService: AuthServiceProtocol, @unchecked Sendable {
+    private let provider: MoyaProvider<AuthAPI>
+
+    public init(provider: MoyaProvider<AuthAPI> = MoyaProvider<AuthAPI>()) {
+        self.provider = provider
+    }
+
+    public func signup(request: SignupRequest) async -> NetworkResult<SignupResponse, SignupError> {
+        await provider.request(.signup(request: request), errorMapper: SignupError.init)
+    }
+}
diff --git a/Projects/Modules/Networks/Sources/Service/ServiceEmpty.swift b/Projects/Modules/Networks/Sources/Service/ServiceEmpty.swift
deleted file mode 100644
index a45ef69..0000000
--- a/Projects/Modules/Networks/Sources/Service/ServiceEmpty.swift
+++ /dev/null
@@ -1,8 +0,0 @@
-//
-//  ServiceEmpty.swift
-//  27th-App-Team-1-iOSManifests
-//
-//  Created by 최안용 on 1/13/26.
-//
-
-import Foundation
diff --git a/Projects/Modules/Networks/Sources/TargetType/AuthAPI.swift b/Projects/Modules/Networks/Sources/TargetType/AuthAPI.swift
new file mode 100644
index 0000000..6589767
--- /dev/null
+++ b/Projects/Modules/Networks/Sources/TargetType/AuthAPI.swift
@@ -0,0 +1,47 @@
+//
+//  AuthAPI.swift
+//  Networks
+//
+//  Created by kimnahun on 1/19/26.
+//  Copyright © 2026 NDGL-iOS. All rights reserved.
+//
+
+import Alamofire
+import Foundation
+import Moya
+                                                                                                                      
+public enum AuthAPI {
+    case signup(request: SignupRequest)
+}
+
+extension AuthAPI: TargetType {
+    public var baseURL: URL {
+        return NetworkConfiguration.baseURL
+    }
+
+    public var path: String {
+        switch self {
+        case .signup:
+            return "/api/v1/auth/users"
+        }
+    }
+
+    public var method: Moya.Method {
+        switch self {
+        case .signup:
+            return .post
+        }
+    }
+
+    public var task: Moya.Task {
+        switch self {
+        case .signup(let request):
+            return .requestJSONEncodable(request)
+        }
+    }
+
+    public var headers: [String: String]? {
+        return ["Content-Type": "application/json"]
+    }
+
+}
diff --git a/Projects/Modules/Networks/Tests/AuthServiceTests.swift b/Projects/Modules/Networks/Tests/AuthServiceTests.swift
new file mode 100644
index 0000000..894a540
--- /dev/null
+++ b/Projects/Modules/Networks/Tests/AuthServiceTests.swift
@@ -0,0 +1,77 @@
+//
+//  AuthServiceTests.swift
+//  NetworksTests
+//
+//  Created by kimnahun on 1/19/26.
+//  Copyright © 2026 NDGL-iOS. All rights reserved.
+//
+
+import XCTest
+@testable import Networks
+
+final class AuthServiceTests: XCTestCase {
+
+    var sut: AuthService!
+
+    override func setUp() {
+        super.setUp()
+        sut = AuthService()
+    }
+
+    override func tearDown() {
+        sut = nil
+        super.tearDown()
+    }
+
+    // MARK: - Signup 실제 API 테스트
+    func test_signup_실제API호출() async throws {
+        // Given
+        print("========== 테스트 시작 ==========")
+        let request = SignupRequest(
+            fcmToken: "test-fcm-token-12345",
+            deviceModel: "iPhone",
+            deviceOs: "iOS",
+            deviceOsVersion: "17.0",
+            appVersion: "1.0.0"
+        )
+        print("Request 생성 완료")
+
+        // When
+        print("API 호출 시작...")
+        let result = await sut.signup(request: request)
+        print("API 호출 완료")
+
+        // Then
+        switch result {
+        case .success(let response):
+            print("========== 성공 ==========")
+            print("UUID: \(response.uuid)")
+            print("AccessToken: \(response.accessToken)")
+            print("Nickname: \(response.nickname)")
+            print("==============================")
+            XCTAssertFalse(response.uuid.isEmpty, "UUID가 비어있음")
+            XCTAssertFalse(response.accessToken.isEmpty, "AccessToken이 비어있음")
+
+        case .failure(let error):
+            print("========== API 에러 ==========")
+            print("Type: \(error.type)")
+            print("Message: \(error.message)")
+            if let field = error.field {
+                print("Field: \(field)")
+            }
+            if let fieldMessage = error.fieldMessage {
+                print("FieldMessage: \(fieldMessage)")
+            }
+            print("=================================")
+            XCTAssertFalse(error.message.isEmpty, "에러 메시지가 비어있음")
+
+        case .networkFailure(let error):
+            print("==========네트워크 에러 ==========")
+            print("Error: \(error.message)")
+            print("=====================================")
+            XCTFail("네트워크 연결 실패: \(error.message)")
+        }
+
+        print("========== 테스트 종료 ==========")
+    }
+}