diff --git a/nym-node/src/node/http/router/api/v1/metrics/wireguard.rs b/nym-node/src/node/http/router/api/v1/metrics/wireguard.rs
index 3519ff30dd..1e4668a805 100644
--- a/nym-node/src/node/http/router/api/v1/metrics/wireguard.rs
+++ b/nym-node/src/node/http/router/api/v1/metrics/wireguard.rs
@@ -16,8 +16,8 @@ use nym_node_requests::api::v1::metrics::models::WireguardStats;
     tag = "Metrics",
     responses(
         (status = 200, content(
-            ("application/json" = WireguardStats),
-            ("application/yaml" = WireguardStats)
+            (WireguardStats = "application/json"),
+            (WireguardStats = "application/yaml")
         ))
     ),
     params(OutputParams),
diff --git a/nyx-chain-watcher/src/db/models.rs b/nyx-chain-watcher/src/db/models.rs
index 9a433ee8ec..ce99cedb89 100644
--- a/nyx-chain-watcher/src/db/models.rs
+++ b/nyx-chain-watcher/src/db/models.rs
@@ -1,7 +1,7 @@
 use serde::{Deserialize, Serialize};
 use utoipa::ToSchema;
 
-#[derive(Clone, Deserialize, Debug)]
+#[derive(Clone, Deserialize, Debug, ToSchema)]
 pub(crate) struct CurrencyPrices {
     pub(crate) chf: f32,
     pub(crate) usd: f32,
diff --git a/nyx-chain-watcher/src/models.rs b/nyx-chain-watcher/src/models.rs
index 93a9f9e592..ce1c0886f4 100644
--- a/nyx-chain-watcher/src/models.rs
+++ b/nyx-chain-watcher/src/models.rs
@@ -9,7 +9,18 @@ pub struct WebhookPayload {
     pub message_index: u64,
     pub sender_address: String,
     pub receiver_address: String,
+    #[schema(value_type = openapi_schema::Coin)]
     pub funds: CosmWasmCoin,
     pub height: u128,
     pub memo: Option<String>,
 }
+
+pub mod openapi_schema {
+    use super::*;
+
+    #[derive(ToSchema)]
+    pub struct Coin {
+        pub denom: String,
+        pub amount: String,
+    }
+}