diff --git a/lib/messages/commands/getdata.js b/lib/messages/commands/getdata.js
index d23c82e..4035e6e 100644
--- a/lib/messages/commands/getdata.js
+++ b/lib/messages/commands/getdata.js
@@ -11,6 +11,11 @@ var _ = bitcore.deps._;
 
 var magicNumber = bitcore.Networks.defaultNetwork.networkMagic.readUInt32LE(0);
 
+/**
+ * @param {Object|Array} - options - If options is an array will use as "inventory"
+ * @param {Array} options.inventory - An array of inventory items
+ * @constructor
+ */
 function GetdataMessage(options) {
   if (!(this instanceof GetdataMessage)) {
     return new GetdataMessage(options);
diff --git a/lib/messages/commands/inv.js b/lib/messages/commands/inv.js
index 9c359b4..9f5065c 100644
--- a/lib/messages/commands/inv.js
+++ b/lib/messages/commands/inv.js
@@ -11,6 +11,11 @@ var _ = bitcore.deps._;
 
 var magicNumber = bitcore.Networks.defaultNetwork.networkMagic.readUInt32LE(0);
 
+/**
+ * @param {Object|Array} - options - If options is an array will use as "inventory"
+ * @param {Array} options.inventory - An array of inventory items
+ * @constructor
+ */
 function InvMessage(options) {
   if (!(this instanceof InvMessage)) {
     return new InvMessage(options);
@@ -33,14 +38,26 @@ function InvMessage(options) {
 }
 inherits(InvMessage, Message);
 
+/**
+ * @param {Buffer|String} hash - The hash of the transaction inventory item
+ * @returns {InvMessage}
+ */
 InvMessage.forTransaction = function(hash) {
   return new InvMessage([Inventory.forTransaction(hash)]);
 };
 
+/**
+ * @param {Buffer|String} hash - The hash of the block inventory item
+ * @returns {InvMessage}
+ */
 InvMessage.forBlock = function(hash) {
   return new InvMessage([Inventory.forBlock(hash)]);
 };
 
+/**
+ * @param {Buffer|String} hash - The hash of the filtered block inventory item
+ * @returns {InvMessage}
+ */
 InvMessage.forFilteredBlock = function(hash) {
   return new InvMessage([Inventory.forFilteredBlock(hash)]);
 };
diff --git a/lib/messages/commands/notfound.js b/lib/messages/commands/notfound.js
index 61caa47..8e124a2 100644
--- a/lib/messages/commands/notfound.js
+++ b/lib/messages/commands/notfound.js
@@ -11,6 +11,11 @@ var _ = bitcore.deps._;
 
 var magicNumber = bitcore.Networks.defaultNetwork.networkMagic.readUInt32LE(0);
 
+/**
+ * @param {Object|Array} - options - If options is an array will use as "inventory"
+ * @param {Array} options.inventory - An array of inventory items
+ * @constructor
+ */
 function NotfoundMessage(options) {
   if (!(this instanceof NotfoundMessage)) {
     return new NotfoundMessage(options);
@@ -33,14 +38,26 @@ function NotfoundMessage(options) {
 }
 inherits(NotfoundMessage, Message);
 
+/**
+ * @param {Buffer|String} hash - The hash of the transaction inventory item
+ * @returns {InvMessage}
+ */
 NotfoundMessage.forTransaction = function(hash) {
   return new NotfoundMessage([Inventory.forTransaction(hash)]);
 };
 
+/**
+ * @param {Buffer|String} hash - The hash of the block inventory item
+ * @returns {InvMessage}
+ */
 NotfoundMessage.forBlock = function(hash) {
   return new NotfoundMessage([Inventory.forBlock(hash)]);
 };
 
+/**
+ * @param {Buffer|String} hash - The hash of the filtered block inventory item
+ * @returns {InvMessage}
+ */
 NotfoundMessage.forFilteredBlock = function(hash) {
   return new NotfoundMessage([Inventory.forFilteredBlock(hash)]);
 };