diff --git a/Package.resolved b/Package.resolved
deleted file mode 100644
index c5f5e15..0000000
--- a/Package.resolved
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-  "pins" : [
-    {
-      "identity" : "swiftlintplugins",
-      "kind" : "remoteSourceControl",
-      "location" : "https://github.com/SimplyDanny/SwiftLintPlugins",
-      "state" : {
-        "revision" : "6c3d6c32a37224179dc290f21e03d1238f3d963b",
-        "version" : "0.56.2"
-      }
-    }
-  ],
-  "version" : 2
-}
diff --git a/Package.swift b/Package.swift
index 1eac926..642b52a 100644
--- a/Package.swift
+++ b/Package.swift
@@ -5,6 +5,7 @@ import PackageDescription
 
 let package = Package(
     name: "VRCKit",
+    defaultLocalization: "en",
     platforms: [
         .macOS(.v12),
         .iOS(.v15),
@@ -12,23 +13,14 @@ let package = Package(
         .watchOS(.v6)
     ],
     products: [
-        // Products define the executables and libraries a package produces, and make them visible to other packages.
         .library(
             name: "VRCKit",
             targets: ["VRCKit"]
         )
     ],
-    dependencies: [
-        // Dependencies declare other packages that this package depends on.
-        // .package(url: /* package url */, from: "1.0.0"),
-        .package(url: "https://github.com/SimplyDanny/SwiftLintPlugins", from: "0.55.1")
-    ],
     targets: [
-        // Targets are the basic building blocks of a package. A target can define a module or a test suite.
-        // Targets can depend on other targets in this package, and on products in packages this package depends on.
         .target(
             name: "VRCKit",
-            dependencies: [],
             path: "Sources"
         ),
         .testTarget(
@@ -37,12 +29,3 @@ let package = Package(
         )
     ]
 )
-
-package.targets.forEach {
-    $0.plugins = [
-        .plugin(name: "SwiftLintBuildToolPlugin", package: "SwiftLintPlugins")
-    ]
-    $0.swiftSettings = [
-        .enableUpcomingFeature("ForwardTrailingClosures") // SE-0286
-    ]
-}
diff --git a/Sources/VRCKit/APIClient.swift b/Sources/VRCKit/APIClient.swift
index 5297dff..c3b4f1e 100644
--- a/Sources/VRCKit/APIClient.swift
+++ b/Sources/VRCKit/APIClient.swift
@@ -6,6 +6,9 @@
 //
 
 import Foundation
+#if canImport(FoundationNetworking)
+import FoundationNetworking
+#endif
 
 public final class APIClient {
     typealias HTTPResponse = (data: Data, response: HTTPURLResponse)
@@ -44,7 +47,7 @@ public final class APIClient {
     ///   - password: The password associated with the username.
     /// - Returns: A Basic Authentication token string.
     /// - Throws: `VRCKitError.unexpectedError` if the username and password cannot be converted to UTF-8 data.
-    func encodeAuthorization(_ username: String, _ password: String) throws -> String {
+    private func encodeAuthorization(_ username: String, _ password: String) throws -> String {
         let authString = "\(username):\(password)"
         guard let payload = authString.data(using: .utf8) else {
             throw VRCKitError.unexpected
@@ -95,12 +98,41 @@ public final class APIClient {
             request.httpBody = body
         }
 
+        #if canImport(FoundationNetworking)
+        return try await requestWithFoundationNetworking(request)
+        #else
+        return try await requestWithFoundation(request)
+        #endif
+    }
+
+    #if canImport(FoundationNetworking)
+    private func requestWithFoundationNetworking(_ request: URLRequest) async throws -> HTTPResponse {
+        var requestError: Error?
+        let httpResponse = await withCheckedContinuation { continuation in
+            URLSession.shared.dataTask(with: request) { data, urlResponse, error in
+                guard let data = data, let reponse = urlResponse as? HTTPURLResponse else {
+                    requestError = error
+                    return
+                }
+                continuation.resume(returning: (data, reponse))
+            }
+            .resume()
+        }
+        if let requestError = requestError {
+            throw requestError
+        }
+        return httpResponse
+    }
+
+    #else
+    private func requestWithFoundation(_ request: URLRequest) async throws -> HTTPResponse {
         let (data, response) = try await URLSession.shared.data(for: request)
         guard let response = response as? HTTPURLResponse else {
             throw VRCKitError.invalidResponse
         }
         return (data, response)
     }
+    #endif
 }
 
 extension APIClient.Method: CustomStringConvertible {
diff --git a/Sources/VRCKit/Errors.swift b/Sources/VRCKit/Errors.swift
index 2214867..66894ec 100644
--- a/Sources/VRCKit/Errors.swift
+++ b/Sources/VRCKit/Errors.swift
@@ -15,6 +15,9 @@ public enum VRCKitError: Error, LocalizedError, Equatable {
     /// Represents an error from the API with details.
     case apiError(_ details: String)
 
+    /// Represents a bad gatewaty error.
+    case badGateway
+
     /// Represents an error indicating that the client has been deallocated.
     case clientDeallocated
 
@@ -37,6 +40,7 @@ public enum VRCKitError: Error, LocalizedError, Equatable {
     public var errorDescription: String? {
         switch self {
         case .apiError: "API Error"
+        case .badGateway: "Bad Gateway"
         case .clientDeallocated: "Client Deallocated"
         case .invalidResponse: "Invalid Response"
         case .invalidRequest: "Invalid Request"
diff --git a/Sources/VRCKit/Models/EditableUserModel.swift b/Sources/VRCKit/Models/EditableUserModel.swift
index ca61e9f..952cdce 100644
--- a/Sources/VRCKit/Models/EditableUserModel.swift
+++ b/Sources/VRCKit/Models/EditableUserModel.swift
@@ -24,8 +24,3 @@ public extension EditableUserInfo {
         tags = detail.tags
     }
 }
-
-public struct UpdatedUser: Codable {
-    public let bio: String?
-    public let statusDescription: String?
-}
diff --git a/Sources/VRCKit/Utils/TrustRank.swift b/Sources/VRCKit/Models/TrustRankModel.swift
similarity index 94%
rename from Sources/VRCKit/Utils/TrustRank.swift
rename to Sources/VRCKit/Models/TrustRankModel.swift
index 88c45e1..50cefd6 100644
--- a/Sources/VRCKit/Utils/TrustRank.swift
+++ b/Sources/VRCKit/Models/TrustRankModel.swift
@@ -1,11 +1,11 @@
 //
-//  TrustRank.swift
+//  TrustRankModel.swift
 //  VRCKit
 //
 //  Created by makinosp on 2024/08/04.
 //
 
-public enum TrustRank {
+public enum TrustRank: Equatable {
     case trusted, known, user, newUser, visitor, unknown
 }
 
diff --git a/Sources/VRCKit/Models/UserModel.swift b/Sources/VRCKit/Models/UserModel.swift
index c2a5f57..f4dc629 100644
--- a/Sources/VRCKit/Models/UserModel.swift
+++ b/Sources/VRCKit/Models/UserModel.swift
@@ -38,26 +38,13 @@ public struct User: ProfileDetailRepresentable {
     public let userLanguage: String?
     public let userLanguageCode: String?
     public let presence: Presence
-}
-
-public extension User {
-    var platform: UserPlatform {
-        presence.platform
-    }
-    var url: URL? {
-        URL(string: [Const.homeBaseUrl, "user", id].joined(separator: "/"))
-    }
-}
 
-public extension User {
-    struct DisplayName: Codable, Hashable {
+    public struct DisplayName: Codable, Hashable {
         public let displayName: String
         public let updatedAt: Date
     }
-}
 
-public extension User {
-    enum State: String, Codable {
+    public enum State: String, Codable {
         /// User is online in VRChat
         case online
         /// User is online, but not in VRChat
@@ -65,10 +52,8 @@ public extension User {
         /// User is offline
         case offline
     }
-}
 
-public extension User {
-    struct Presence: Codable, Hashable {
+    public struct Presence: Codable, Hashable {
         public let groups: [String]
         public let id: String
         public let instance: String
@@ -81,6 +66,15 @@ public extension User {
     }
 }
 
+public extension User {
+    var platform: UserPlatform {
+        presence.platform
+    }
+    var url: URL? {
+        URL(string: [Const.homeBaseUrl, "user", id].joined(separator: "/"))
+    }
+}
+
 extension User.Presence {
     init() {
         groups = []
diff --git a/Sources/VRCKit/Models/UserTagModel.swift b/Sources/VRCKit/Models/UserTagModel.swift
index 85a4b89..60214722 100644
--- a/Sources/VRCKit/Models/UserTagModel.swift
+++ b/Sources/VRCKit/Models/UserTagModel.swift
@@ -49,6 +49,8 @@ extension UserTags: Encodable {
     public func encode(to encoder: any Encoder) throws {
         var container = encoder.unkeyedContainer()
         let tags = languageTags.map(\.rawValue)
-        try container.encode(tags)
+        for tag in tags {
+            try container.encode(tag)
+        }
     }
 }
diff --git a/Sources/VRCKit/Models/WorldModel.swift b/Sources/VRCKit/Models/WorldModel.swift
index eba49f0..bd2fa32 100644
--- a/Sources/VRCKit/Models/WorldModel.swift
+++ b/Sources/VRCKit/Models/WorldModel.swift
@@ -10,7 +10,7 @@ import Foundation
 public struct World: Codable, Identifiable, Hashable {
     public let id: String
     public let name: String
-    public let description: String
+    public let description: String?
     public let featured: Bool
     public let authorId: String
     public let authorName: String
@@ -30,9 +30,7 @@ public struct World: Codable, Identifiable, Hashable {
     public let visits: Int
     public let popularity: Int
     public let heat: Int
-    // MARK: Only world info params
-    // public let publicOccupants: Int
-    // public let privateOccupants: Int
+    public let favoriteGroup: String?
     public let version: Int?
 
     public enum ReleaseStatus: String, Codable {
diff --git a/Sources/VRCKit/PreviewServices/PreviewDataProvider.swift b/Sources/VRCKit/PreviewServices/PreviewDataProvider.swift
index 891c93c..e6b29d5 100644
--- a/Sources/VRCKit/PreviewServices/PreviewDataProvider.swift
+++ b/Sources/VRCKit/PreviewServices/PreviewDataProvider.swift
@@ -227,6 +227,7 @@ public final class PreviewDataProvider {
             visits: 1,
             popularity: 1,
             heat: 1,
+            favoriteGroup: "",
             version: 1
         )
     }
diff --git a/Sources/VRCKit/Protocols/WorldServiceProtocol.swift b/Sources/VRCKit/Protocols/WorldServiceProtocol.swift
index 5ee519c..5b59158 100644
--- a/Sources/VRCKit/Protocols/WorldServiceProtocol.swift
+++ b/Sources/VRCKit/Protocols/WorldServiceProtocol.swift
@@ -5,7 +5,6 @@
 //  Created by kiripoipoi on 2024/09/07.
 //
 
-// WorldServiceProtocol.swift
 public protocol WorldServiceProtocol {
     func fetchWorld(worldId: String) async throws -> World
     func fetchFavoritedWorlds() async throws -> [World]
diff --git a/Sources/VRCKit/Services/AuthenticationService.swift b/Sources/VRCKit/Services/AuthenticationService.swift
index e2c4b6a..398b2db 100644
--- a/Sources/VRCKit/Services/AuthenticationService.swift
+++ b/Sources/VRCKit/Services/AuthenticationService.swift
@@ -37,6 +37,7 @@ public class AuthenticationService: APIService, AuthenticationServiceProtocol {
 
     /// Verify 2FA With TOTP or Email OTP
     public func verify2FA(verifyType: VerifyType, code: String) async throws -> Bool {
+        guard code.count == 6 else { throw VRCKitError.invalidRequest("Code must be 6 digits") }
         let path = "\(authPath)/twofactorauth/\(verifyType.rawValue.lowercased())/verify"
         let requestData = try Serializer.shared.encode(VerifyRequest(code: code))
         let response = try await client.request(
diff --git a/Sources/VRCKit/Services/WorldService.swift b/Sources/VRCKit/Services/WorldService.swift
index 1349c88..9a93c90 100644
--- a/Sources/VRCKit/Services/WorldService.swift
+++ b/Sources/VRCKit/Services/WorldService.swift
@@ -14,8 +14,7 @@ public class WorldService: APIService, WorldServiceProtocol {
     }
 
     public func fetchFavoritedWorlds() async throws -> [World] {
-        let path = "worlds/favorites"
-        let response = try await client.request(path: path, method: .get)
+        let response = try await client.request(path: "\(path)/favorites", method: .get)
         let favoriteWorldWrapper: FavoriteWorldWrapper = try Serializer.shared.decode(response.data)
         return favoriteWorldWrapper.worlds
     }
diff --git a/Sources/VRCKit/Utils/CookieManager.swift b/Sources/VRCKit/Utils/CookieManager.swift
index a089a23..e134886 100644
--- a/Sources/VRCKit/Utils/CookieManager.swift
+++ b/Sources/VRCKit/Utils/CookieManager.swift
@@ -6,6 +6,9 @@
 //
 
 import Foundation
+#if canImport(FoundationNetworking)
+import FoundationNetworking
+#endif
 
 public final class CookieManager {
     private var domainURL: String?
diff --git a/Sources/VRCKit/Utils/OptionalISO8601Date.swift b/Sources/VRCKit/Utils/OptionalISO8601Date.swift
index c99ed6f..ee93369 100644
--- a/Sources/VRCKit/Utils/OptionalISO8601Date.swift
+++ b/Sources/VRCKit/Utils/OptionalISO8601Date.swift
@@ -48,11 +48,13 @@ extension OptionalISO8601Date: Encodable {
     }
 }
 
-extension OptionalISO8601Date: Hashable {
+extension OptionalISO8601Date: Equatable {
     public static func == (lhs: OptionalISO8601Date, rhs: OptionalISO8601Date) -> Bool {
         lhs.date == rhs.date
     }
+}
 
+extension OptionalISO8601Date: Hashable {
     public func hash(into hasher: inout Hasher) {
         hasher.combine(date)
     }
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..28f1929
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,12 @@
+services:
+  build:
+    image: swift:5.10.1
+    command: bash -c "swift build -c release"
+    volumes:
+      - ${PWD}:${PWD}
+    working_dir: ${PWD}
+  lint:
+    image: ghcr.io/realm/swiftlint:latest
+    volumes:
+      - ${PWD}:${PWD}
+    working_dir: ${PWD}