diff --git a/crates/sp_client/Cargo.toml b/crates/sp_client/Cargo.toml
index 6a6eee5..249e291 100644
--- a/crates/sp_client/Cargo.toml
+++ b/crates/sp_client/Cargo.toml
@@ -17,6 +17,7 @@ getrandom = { version="0.2.12", features = ["js"] }
 wasm-logger = "0.2.0"
 rand = "0.8.5"
 log = "0.4.6"
+tsify = { git = "https://github.com/Sosthene00/tsify", branch = "next" }
 
 [dev-dependencies]
 wasm-bindgen-test = "0.3"
diff --git a/crates/sp_client/src/api.rs b/crates/sp_client/src/api.rs
index b1f6ad3..0628a60 100644
--- a/crates/sp_client/src/api.rs
+++ b/crates/sp_client/src/api.rs
@@ -1,17 +1,21 @@
 use rand::Rng;
 
+use serde::{Deserialize, Serialize};
 use sp_backend::silentpayments::sending::SilentPaymentAddress;
 use wasm_bindgen::prelude::*;
+use tsify::Tsify;
 
 use sp_backend::spclient::SpendKey;
 use sp_backend::spclient::{derive_keys_from_seed, SpClient, OutputList};
 
 const IS_TESTNET: bool = true;
 
-#[wasm_bindgen]
-pub struct GenerateSpWalletReturn {
-    sp_client_json: String,
-    sp_outputs_json: String,
+#[derive(Tsify, Serialize, Deserialize)]
+#[tsify(into_wasm_abi)]
+#[allow(non_camel_case_types)]
+pub struct generate_sp_wallet_return {
+    pub sp_client_json: String,
+    pub sp_outputs_json: String,
 }
 
 #[wasm_bindgen]
@@ -19,19 +23,13 @@ pub fn setup() {
     wasm_logger::init(wasm_logger::Config::default());
 }
 
-fn new_key() -> Vec<u8> {
+#[wasm_bindgen]
+pub fn generate_sp_wallet(label: Option<String>, birthday: u32, is_testnet: bool) -> Option<generate_sp_wallet_return> {
     let mut seed = [0u8; 64];
     rand::thread_rng().fill(&mut seed);
-    seed.to_vec()
-}
-
-#[wasm_bindgen]
-pub fn generate_sp_wallet(birthday: u32, is_testnet: bool) -> Option<GenerateSpWalletReturn> {
-    let mut seed = [0u8; 64];
-    seed.copy_from_slice(&new_key());
     let (scan_sk, spend_sk) = derive_keys_from_seed(&seed, is_testnet).ok()?;
     let sp_client = SpClient::new(
-        "".to_owned(),
+        label.unwrap_or("default".into()),
         scan_sk,
         SpendKey::Secret(spend_sk),
         None,
@@ -43,21 +41,19 @@ pub fn generate_sp_wallet(birthday: u32, is_testnet: bool) -> Option<GenerateSpW
         "Created client for sp with address: {}",
         our_address.to_string()
     );
-    // zero out the seed
-    for mut b in seed.into_iter() {
-        b = 0;
-        assert!(b == 0); // this guarantee that the compiler won't optimize it away
-    }
+
     let sp_client_json = serde_json::to_string(&sp_client).ok()?;
     
     // Generate an empty outputs
     let sp_outputs = OutputList::new(our_address.get_scan_key(), our_address.get_spend_key(), birthday);
     let sp_outputs_json = serde_json::to_string(&sp_outputs).ok()?;
 
-    Some(GenerateSpWalletReturn {
+    let res = generate_sp_wallet_return {
         sp_client_json,
-        sp_outputs_json,
-    })
+        sp_outputs_json
+    };
+
+    Some(res)
 }
 
 #[wasm_bindgen]