diff --git a/client-sdk/src/client/fee_payment.rs b/client-sdk/src/client/fee_payment.rs
index 03048b7b..a7147f64 100644
--- a/client-sdk/src/client/fee_payment.rs
+++ b/client-sdk/src/client/fee_payment.rs
@@ -203,6 +203,15 @@ pub async fn generate_withdrawal_transfers(
     })
 }
 
+pub async fn get_used_memos(
+    store_vault_server: &dyn StoreVaultClientInterface,
+    view_pair: ViewPair,
+) -> Result<Vec<PaymentMemo>, SyncError> {
+    let used_memos =
+        get_all_payment_memos(store_vault_server, view_pair.view, USED_OR_INVALID_MEMO).await?;
+    Ok(used_memos)
+}
+
 /// get unused payment memos
 pub async fn get_unused_payments(
     store_vault_server: &dyn StoreVaultClientInterface,
diff --git a/validity-prover/src/app/observer_rpc.rs b/validity-prover/src/app/observer_rpc.rs
index 289c7e84..af04952c 100644
--- a/validity-prover/src/app/observer_rpc.rs
+++ b/validity-prover/src/app/observer_rpc.rs
@@ -469,7 +469,7 @@ impl SyncEvent for RPCObserver {
     }
 }
 
-// This function is used to generate an error for trigging RPC error for testing purposes.
+// This function is used to generate an error for triggering RPC error for testing purposes.
 pub fn generate_error_for_test() -> Result<(), ObserverError> {
     let error_timestamps = match std::env::var("ERROR_TIMESTAMPS") {
         Ok(val) => val,
diff --git a/wasm/src/fee_payment.rs b/wasm/src/fee_payment.rs
index e97e223a..fbad1888 100644
--- a/wasm/src/fee_payment.rs
+++ b/wasm/src/fee_payment.rs
@@ -5,8 +5,11 @@ use crate::{
     client::{get_client, Config},
     init_logger,
     js_types::{
-        client::JsTransferRequest, fee::JsWithdrawalTransfers, payment_memo::JsPaymentMemoEntry,
+        client::JsTransferRequest,
+        fee::JsWithdrawalTransfers,
+        payment_memo::{JsPaymentMemo, JsPaymentMemoEntry},
     },
+    utils::str_to_view_pair,
 };
 
 // Quote the fee for withdrawal and claim fee (if with_claim_fee is true), and generate the corresponding transfers
@@ -58,3 +61,20 @@ pub fn generate_fee_payment_memo(
         .collect();
     Ok(js_payment_memos)
 }
+
+#[wasm_bindgen]
+pub async fn get_used_memos(
+    config: &Config,
+    view_pair: &str,
+) -> Result<Vec<JsPaymentMemo>, JsError> {
+    init_logger();
+    let client = get_client(config);
+    let view_pair = str_to_view_pair(view_pair)?;
+    let payment_memos = intmax2_client_sdk::client::fee_payment::get_used_memos(
+        client.store_vault_server.as_ref(),
+        view_pair,
+    )
+    .await?;
+    let js_payment_memos = payment_memos.into_iter().map(JsPaymentMemo::from).collect();
+    Ok(js_payment_memos)
+}
diff --git a/wasm/src/js_types/payment_memo.rs b/wasm/src/js_types/payment_memo.rs
index 57a9f6d3..c9e49100 100644
--- a/wasm/src/js_types/payment_memo.rs
+++ b/wasm/src/js_types/payment_memo.rs
@@ -1,7 +1,9 @@
-use intmax2_client_sdk::client::types::PaymentMemoEntry;
+use intmax2_client_sdk::client::{misc::payment_memo::PaymentMemo, types::PaymentMemoEntry};
 use serde::{Deserialize, Serialize};
 use wasm_bindgen::{prelude::wasm_bindgen, JsError};
 
+use crate::js_types::{common::JsMetaData, data::JsTransferData};
+
 #[derive(Debug, Clone, Serialize, Deserialize)]
 #[wasm_bindgen(getter_with_clone)]
 pub struct JsPaymentMemoEntry {
@@ -31,3 +33,21 @@ impl TryFrom<JsPaymentMemoEntry> for PaymentMemoEntry {
         })
     }
 }
+
+#[derive(Debug, Clone)]
+#[wasm_bindgen(getter_with_clone)]
+pub struct JsPaymentMemo {
+    pub meta: JsMetaData,
+    pub transfer_data: JsTransferData,
+    pub memo: String,
+}
+
+impl From<PaymentMemo> for JsPaymentMemo {
+    fn from(payment_memo: PaymentMemo) -> Self {
+        Self {
+            meta: JsMetaData::from(payment_memo.meta),
+            transfer_data: JsTransferData::from(payment_memo.transfer_data),
+            memo: payment_memo.memo,
+        }
+    }
+}