diff --git a/openapi/openapi.json b/openapi/openapi.json
index 3e87f02..2d80d1e 100644
--- a/openapi/openapi.json
+++ b/openapi/openapi.json
@@ -261,7 +261,8 @@
           "amount",
           "tokenOut",
           "quoteType",
-          "protocol"
+          "protocol",
+          "feeBps"
         ],
         "properties": {
           "amount": {
@@ -270,6 +271,17 @@
               "250000000"
             ]
           },
+          "feeBps": {
+            "type": "integer",
+            "format": "int32",
+            "description": "Fee in basis points to be charged by the Market Maker",
+            "examples": [
+              "1",
+              "20"
+            ],
+            "maximum": 10000,
+            "minimum": 0
+          },
           "protocol": {
             "$ref": "#/components/schemas/Protocol"
           },
@@ -499,4 +511,4 @@
       "description": "Webhook API for RFQ providers"
     }
   ]
-}
\ No newline at end of file
+}
diff --git a/order-engine-sdk/src/fill.rs b/order-engine-sdk/src/fill.rs
index 73ef42d..da95537 100644
--- a/order-engine-sdk/src/fill.rs
+++ b/order-engine-sdk/src/fill.rs
@@ -97,7 +97,7 @@ pub fn validate_fill_sanitized_message(
 
             ensure!(data.len() >= 8, "Not enough data in fill instruction");
             // Must slice off anchor's discriminator first
-            let (discriminator, ix_data) = data.split_at(8);
+            let (discriminator, mut ix_data) = data.split_at(8);
             ensure!(
                 discriminator == order_engine::client::args::Fill::DISCRIMINATOR,
                 "Not a fill discriminator"
@@ -116,7 +116,7 @@ pub fn validate_fill_sanitized_message(
             ensure!(input_mint == &order.input_mint, "Invalid input mint");
             ensure!(output_mint == &order.output_mint, "Invalid output mint");
 
-            let fill_ix = order_engine::client::args::Fill::try_from_slice(ix_data)
+            let fill_ix = order_engine::client::args::Fill::deserialize(&mut ix_data)
                 .map_err(|e| anyhow!("Invalid fill ix data {e}"))?;
 
             // Check the input and output amount
@@ -250,13 +250,13 @@ pub fn validate_similar_fill_sanitized_message(
                 "Duplicated fill instruction"
             );
             ensure!(data.len() >= 8, "Not enough data in fill instruction");
-            let (discriminator, ix_data) = data.split_at(8);
+            let (discriminator, mut ix_data) = data.split_at(8);
             ensure!(
                 discriminator == order_engine::client::args::Fill::DISCRIMINATOR,
                 "Not a fill discriminator"
             );
 
-            let fill_ix = order_engine::client::args::Fill::try_from_slice(ix_data)
+            let fill_ix = order_engine::client::args::Fill::deserialize(&mut ix_data)
                 .map_err(|e| anyhow!("Invalid fill ix data {e}"))?;
             // We check if the taker has enough balance to fill the order first
             let taker = accounts.first().context("Invalid fill ix data")?.pubkey;
diff --git a/programs/order-engine/tests/test_fill.rs b/programs/order-engine/tests/test_fill.rs
index 719a5a9..9d742df 100644
--- a/programs/order-engine/tests/test_fill.rs
+++ b/programs/order-engine/tests/test_fill.rs
@@ -223,13 +223,17 @@ impl TestEnvironment {
             temporary_wsol_token_account,
             ..
         } = self;
-        let data = order_engine::instruction::Fill {
+        let mut data = order_engine::instruction::Fill {
             input_amount: *input_amount,
             output_amount: *output_amount,
             expire_at: i64::MAX,
         }
         .data();
 
+        // TODO: unused data to track fee_bps
+        let fee_bps: u16 = 0;
+        data.extend(fee_bps.to_le_bytes());
+
         let mut instruction = Instruction {
             program_id: order_engine::ID,
             accounts: order_engine::accounts::Fill {
diff --git a/webhook-api/src/enums.rs b/webhook-api/src/enums.rs
index a5f3e39..76e631b 100644
--- a/webhook-api/src/enums.rs
+++ b/webhook-api/src/enums.rs
@@ -2,14 +2,18 @@ use serde::{Deserialize, Serialize};
 use strum::{Display, EnumString};
 use utoipa::ToSchema;
 
-#[derive(Debug, Copy, Clone, Serialize, Deserialize, PartialEq, Eq, ToSchema, EnumString)]
+#[derive(
+    Debug, Copy, Clone, Serialize, Deserialize, PartialEq, Eq, ToSchema, EnumString, Display,
+)]
 #[serde(rename_all = "camelCase")]
 pub enum QuoteType {
     ExactIn,
     ExactOut,
 }
 
-#[derive(Debug, Copy, Clone, Serialize, Deserialize, PartialEq, Eq, ToSchema, EnumString)]
+#[derive(
+    Debug, Copy, Clone, Serialize, Deserialize, PartialEq, Eq, ToSchema, EnumString, Display,
+)]
 #[serde(rename_all = "camelCase")]
 pub enum Protocol {
     V1,
diff --git a/webhook-api/src/requests.rs b/webhook-api/src/requests.rs
index c899149..5df1ac8 100644
--- a/webhook-api/src/requests.rs
+++ b/webhook-api/src/requests.rs
@@ -32,6 +32,9 @@ pub struct QuoteRequest {
     #[schema(examples("10000"))]
     #[serde(skip_serializing_if = "Option::is_none")]
     pub suggested_prioritization_fees: Option<u64>,
+    /// Fee in basis points to be charged by the Market Maker
+    #[schema(examples("1", "20"), maximum = 10_000)]
+    pub fee_bps: u16,
 }
 
 /// Order to be fulfilled by the Market Maker