diff --git a/Sources/Transaction.swift b/Sources/Transaction.swift
index d4d36a2..ab4a5eb 100644
--- a/Sources/Transaction.swift
+++ b/Sources/Transaction.swift
@@ -5,13 +5,20 @@ public typealias TransactionId = String
 public typealias Base64EncodedString = String
 
 public extension Transaction {
+
     struct PriceRequest {
         var bytes: Int = 0
         var target: Address?
     }
+
     struct Tag: Codable {
-        let name: String
-        let value: String
+        public let name: String
+        public let value: String
+
+        public init(name: String, value: String) {
+            self.name = name
+            self.value = value
+        }
     }
 }
 
diff --git a/Sources/Wallet.swift b/Sources/Wallet.swift
index 0c3ee95..d7d98a1 100644
--- a/Sources/Wallet.swift
+++ b/Sources/Wallet.swift
@@ -56,6 +56,10 @@ public struct Wallet {
 public struct Address: Equatable, CustomStringConvertible {
     public let address: String
     public var description: String { address }
+
+    public init(address: String) {
+        self.address = address
+    }
 }
 
 extension Address {
@@ -71,8 +75,8 @@ extension Address {
 public typealias Amount = Measurement<ARUnit>
 
 public final class ARUnit: Dimension {
-    static let AR = ARUnit(symbol: "AR", converter: UnitConverterLinear(coefficient: 1e12))
-    static let winston = ARUnit(symbol: "winston", converter: UnitConverterLinear(coefficient: 1.0))
+    public static let AR = ARUnit(symbol: "AR", converter: UnitConverterLinear(coefficient: 1e12))
+    public static let winston = ARUnit(symbol: "winston", converter: UnitConverterLinear(coefficient: 1.0))
 
     override public class func baseUnit() -> Self {
         return winston as! Self