diff --git a/crates/brk_server/src/api/transactions/mod.rs b/crates/brk_server/src/api/transactions/mod.rs
index 71684dfd5..b03195f23 100644
--- a/crates/brk_server/src/api/transactions/mod.rs
+++ b/crates/brk_server/src/api/transactions/mod.rs
@@ -5,7 +5,7 @@ use axum::{
     response::Redirect,
     routing::get,
 };
-use brk_types::{Transaction, TxOutspend, TxStatus, TxidParam, TxidVout};
+use brk_types::{Hex, Transaction, TxOutspend, TxStatus, TxidParam, TxidVout};
 
 use crate::{CacheStrategy, extended::TransformResponseExtended};
 
@@ -82,7 +82,7 @@ impl TxRoutes for ApiRouter<AppState> {
                     .description(
                         "Retrieve the raw transaction as a hex-encoded string. Returns the serialized transaction in hexadecimal format.",
                     )
-                    .ok_response::<String>()
+                    .ok_response::<Hex>()
                     .not_modified()
                     .bad_request()
                     .not_found()
diff --git a/crates/brk_types/src/hex.rs b/crates/brk_types/src/hex.rs
new file mode 100644
index 000000000..38fb6ebf1
--- /dev/null
+++ b/crates/brk_types/src/hex.rs
@@ -0,0 +1,7 @@
+use schemars::JsonSchema;
+use serde::Serialize;
+
+/// Hex-encoded string
+#[derive(Debug, Clone, Serialize, JsonSchema)]
+#[serde(transparent)]
+pub struct Hex(String);
diff --git a/crates/brk_types/src/lib.rs b/crates/brk_types/src/lib.rs
index 9dec96ae2..d3dc3cd17 100644
--- a/crates/brk_types/src/lib.rs
+++ b/crates/brk_types/src/lib.rs
@@ -58,6 +58,7 @@ mod hashratesummary;
 mod health;
 mod height;
 mod heightparam;
+mod hex;
 mod index;
 mod indexinfo;
 mod limit;
@@ -211,6 +212,7 @@ pub use hashratesummary::*;
 pub use health::*;
 pub use height::*;
 pub use heightparam::*;
+pub use hex::*;
 pub use index::*;
 pub use indexinfo::*;
 pub use limit::*;