diff --git a/README.md b/README.md
index f947353..4538f88 100644
--- a/README.md
+++ b/README.md
@@ -209,7 +209,7 @@ When they fail, some of these functions return only a key-value `err_msg`.
 
 **`generate_key_image`**
 
-* Args: `sec_viewKey_string: String`, `sec_spendKey_string: String`, `pub_spendKey_string: String`, `tx_pub_key: String`, `out_index: UInt64String`
+* Args: `sec_viewKey_string: String`, `sec_spendKey_string: String`, `pub_spendKey_string: String`, `tx_pub_key: String`, `out_index: UInt32String`
 
 * Returns: `err_msg: String` *OR* `retVal: String`
 	
@@ -217,6 +217,12 @@ When they fail, some of these functions return only a key-value `err_msg`.
 
 * Args: `pub: String`, `sec: String`
 
+* Returns: `err_msg: String` *OR* `retVal: String`
+	
+**`derivation_to_scalar`**
+
+* Args: `derivation: String`, `output_index: UInt32String`
+
 * Returns: `err_msg: String` *OR* `retVal: String`
 
 **`derive_public_key`**
@@ -231,7 +237,7 @@ When they fail, some of these functions return only a key-value `err_msg`.
 
 * Returns: `err_msg: String` *OR* `retVal: String`
 
-**`decodeRct`**
+**`decodeRct`, `decodeRctSimple`**
 
 * Args: `i: UInt32String`, `sk: String`, `rv: DecodeRCT_RV` where
 
@@ -263,6 +269,18 @@ Useful for displaying an estimated fee – To obtain exact fees, see "Creating a
 * Returns: `retVal: UInt64String`
 
 
+**`estimate_rct_tx_size`**
+
+* Args: 
+	* `n_inputs: UInt32String`
+	* `mixin: UInt32String`
+	* `n_outputs: UInt32String`
+	* `extra_size: UInt32String`
+	* `bulletproof: BoolString`
+
+* Returns: `retVal: UInt32String`
+
+
 #### Creating and Sending Transactions
 
 As mentioned, implementing the Send procedure without making use of one of our existing libraries or examples involves two bridge calls surrounded by server API calls, and mandatory reconstruction logic, and is simplified by various opportunities to pass values directly between the steps.