diff --git a/primitives/src/campaign.rs b/primitives/src/campaign.rs
index b2f2fdcc5..eb1298e86 100644
--- a/primitives/src/campaign.rs
+++ b/primitives/src/campaign.rs
@@ -40,7 +40,7 @@ mod campaign_id {
             write!(f, "CampaignId({})", self)
         }
     }
-    
+
     impl CampaignId {
         /// Generates randomly a `CampaignId` using `Uuid::new_v4().to_simple()`
         pub fn new() -> Self {
diff --git a/sentry/src/routes/channel.rs b/sentry/src/routes/channel.rs
index 0a86aa38f..c66a7ffc5 100644
--- a/sentry/src/routes/channel.rs
+++ b/sentry/src/routes/channel.rs
@@ -307,22 +307,47 @@ pub async fn add_spender_leaf<C: Locked + 'static>(
     let channel = req
         .extensions()
         .get::<ChainOf<Channel>>()
-        .ok_or(ResponseError::NotFound)?
-        .context;
+        .ok_or(ResponseError::NotFound)?;
 
     update_accounting(
         app.pool.clone(),
-        channel.id(),
+        channel.context.id(),
         spender,
         Side::Spender,
         UnifiedNum::from_u64(0),
     )
     .await?;
 
-    // TODO: Replace with SpenderResponse
-    Ok(success_response(serde_json::to_string(&SuccessResponse {
-        success: true,
-    })?))
+    let latest_spendable =
+        fetch_spendable(app.pool.clone(), &spender, &channel.context.id()).await?;
+
+    let latest_spendable = match latest_spendable {
+        Some(spendable) => spendable,
+        None => {
+            create_or_update_spendable_document(&app.adapter, app.pool.clone(), &channel, spender)
+                .await?
+        }
+    };
+
+    let new_state =
+        match get_corresponding_new_state(&app.pool, &app.logger, &channel.context).await? {
+            Some(new_state) => new_state,
+            None => return spender_response_without_leaf(latest_spendable.deposit.total),
+        };
+
+    let total_spent = new_state
+        .balances
+        .spenders
+        .get(&spender)
+        .map(|spent| spent.to_owned());
+
+    let res = SpenderResponse {
+        spender: Spender {
+            total_deposited: latest_spendable.deposit.total,
+            total_spent,
+        },
+    };
+    Ok(success_response(serde_json::to_string(&res)?))
 }
 
 async fn get_corresponding_new_state(
@@ -902,12 +927,21 @@ mod test {
     #[tokio::test]
     async fn adds_and_retrieves_spender_leaf() {
         let app = setup_dummy_app().await;
+
         let channel_context = app
             .config
             .find_chain_of(DUMMY_CAMPAIGN.channel.token)
             .expect("Dummy channel Token should be present in config!")
             .with(DUMMY_CAMPAIGN.channel);
 
+        let deposit = AdapterDeposit {
+            total: BigNum::from_str("100000000000000000000").expect("should convert"), // 100 DAI
+            still_on_create2: BigNum::from_str("1000000000000000000").expect("should convert"), // 1 DAI
+        };
+        app.adapter
+            .client
+            .add_deposit_call(channel_context.context.id(), *CREATOR, deposit.clone());
+
         insert_channel(&app.pool, channel_context.context)
             .await
             .expect("should insert channel");