diff --git a/taptrade-cli-demo/coordinator/src/wallet/wallet_utils.rs b/taptrade-cli-demo/coordinator/src/wallet/wallet_utils.rs
index 0993247..b332390 100644
--- a/taptrade-cli-demo/coordinator/src/wallet/wallet_utils.rs
+++ b/taptrade-cli-demo/coordinator/src/wallet/wallet_utils.rs
@@ -1,3 +1,4 @@
+/// This module provides utility functions for working with wallets.
 use super::*;
 #[derive(Serialize, Deserialize, Debug)]
 pub struct PsbtInput {
@@ -13,6 +14,16 @@ pub trait BondTx {
 }
 
 impl BondTx for Transaction {
+	/// Calculates the sum of input values for the transaction.
+	///
+	/// # Arguments
+	///
+	/// * `blockchain` - A reference to the blockchain.
+	/// * `db` - A reference to the database.
+	///
+	/// # Returns
+	///
+	/// The sum of input values as a `Result<u64>`.
 	fn input_sum<D: Database, B: GetTx>(&self, blockchain: &B, db: &D) -> Result<u64> {
 		let mut input_sum = 0;
 
@@ -39,7 +50,15 @@ impl BondTx for Transaction {
 		}
 		Ok(input_sum)
 	}
-
+	/// Calculates the sum of output values for the bond address.
+	///
+	/// # Arguments
+	///
+	/// * `bond_address` - The bond address as a string.
+	///
+	/// # Returns
+	///
+	/// The sum of output values as a `Result<u64>`.
 	fn bond_output_sum(&self, bond_address: &str) -> Result<u64> {
 		let bond_script = Address::from_str(bond_address)?
 			.require_network(Network::Regtest)?
@@ -52,13 +71,24 @@ impl BondTx for Transaction {
 		}
 		Err(anyhow!("No output to bond address in transaction"))
 	}
-
+	/// Calculates the sum of all output values for the transaction.
+	///
+	/// # Returns
+	///
+	/// The sum of all output values as a `u64`.
 	fn all_output_sum(&self) -> u64 {
 		self.output.iter().map(|output| output.value).sum()
 	}
 }
 
 /// converts a csv string of bincode binary serialized, hex encoded bdk psbt inputs to a vector of PsbtInput
+/// # Arguments
+///
+/// * `inputs_csv_hex` - The CSV string of inputs as hex encoded strings.
+///
+/// # Returns
+///
+/// A vector of `PsbtInput` as a `Result<Vec<PsbtInput>>`.
 pub fn csv_hex_to_bdk_input(inputs_csv_hex: &str) -> Result<Vec<PsbtInput>> {
 	let mut inputs: Vec<PsbtInput> = Vec::new();
 	for input_hex in inputs_csv_hex.split(',') {