diff --git a/cloudflare-e2e-test/src/storage_databases/kv.rs b/cloudflare-e2e-test/src/storage_databases/kv.rs
index 0685c302..d7721f41 100644
--- a/cloudflare-e2e-test/src/storage_databases/kv.rs
+++ b/cloudflare-e2e-test/src/storage_databases/kv.rs
@@ -429,7 +429,6 @@ fn get_random_title() -> String {
             char::from(90),
         ))
         .take(10)
-        .map(char::from)
         .collect();
     title
 }
diff --git a/cloudflare/src/endpoints/ai/execute_model.rs b/cloudflare/src/endpoints/ai/execute_model.rs
index 67869427..3101f872 100644
--- a/cloudflare/src/endpoints/ai/execute_model.rs
+++ b/cloudflare/src/endpoints/ai/execute_model.rs
@@ -31,7 +31,7 @@ impl EndpointSpec for ExecuteModel<'_> {
     }
 
     #[inline]
-    fn body(&self) -> Option<RequestBody> {
+    fn body(&self) -> Option<RequestBody<'_>> {
         let body = serde_json::to_string(&self.params).unwrap();
         Some(RequestBody::Json(body))
     }
@@ -320,12 +320,12 @@ pub enum MessageRole {
     Assistant,
 }
 
-impl ToString for MessageRole {
-    fn to_string(&self) -> String {
+impl std::fmt::Display for MessageRole {
+    fn fmt(&self, formatter: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
-            MessageRole::System => "System".to_string(),
-            MessageRole::User => "User".to_string(),
-            MessageRole::Assistant => "Assistant".to_string(),
+            MessageRole::System => write!(formatter, "System"),
+            MessageRole::User => write!(formatter, "User"),
+            MessageRole::Assistant => write!(formatter, "Assistant"),
         }
     }
 }
diff --git a/cloudflare/src/endpoints/argo_tunnel/create_tunnel.rs b/cloudflare/src/endpoints/argo_tunnel/create_tunnel.rs
index 2187353a..985c811b 100644
--- a/cloudflare/src/endpoints/argo_tunnel/create_tunnel.rs
+++ b/cloudflare/src/endpoints/argo_tunnel/create_tunnel.rs
@@ -30,7 +30,7 @@ impl EndpointSpec for CreateTunnel<'_> {
         format!("accounts/{}/tunnels", self.account_identifier)
     }
     #[inline]
-    fn body(&self) -> Option<RequestBody> {
+    fn body(&self) -> Option<RequestBody<'_>> {
         let body = serde_json::to_string(&self.params).unwrap();
         Some(RequestBody::Json(body))
     }
diff --git a/cloudflare/src/endpoints/argo_tunnel/route_dns.rs b/cloudflare/src/endpoints/argo_tunnel/route_dns.rs
index 46f4a0c3..8d4502c0 100644
--- a/cloudflare/src/endpoints/argo_tunnel/route_dns.rs
+++ b/cloudflare/src/endpoints/argo_tunnel/route_dns.rs
@@ -28,7 +28,7 @@ impl EndpointSpec for RouteTunnel<'_> {
         format!("zones/{}/tunnels/{}/routes", self.zone_tag, self.tunnel_id)
     }
     #[inline]
-    fn body(&self) -> Option<RequestBody> {
+    fn body(&self) -> Option<RequestBody<'_>> {
         let body = serde_json::to_string(&self.params).unwrap();
         Some(RequestBody::Json(body))
     }
diff --git a/cloudflare/src/endpoints/cfd_tunnel/create_tunnel.rs b/cloudflare/src/endpoints/cfd_tunnel/create_tunnel.rs
index ffd74e58..b43c6008 100644
--- a/cloudflare/src/endpoints/cfd_tunnel/create_tunnel.rs
+++ b/cloudflare/src/endpoints/cfd_tunnel/create_tunnel.rs
@@ -30,7 +30,7 @@ impl EndpointSpec for CreateTunnel<'_> {
         format!("accounts/{}/cfd_tunnel", self.account_identifier)
     }
     #[inline]
-    fn body(&self) -> Option<RequestBody> {
+    fn body(&self) -> Option<RequestBody<'_>> {
         let body = serde_json::to_string(&self.params).unwrap();
         Some(RequestBody::Json(body))
     }
diff --git a/cloudflare/src/endpoints/cfd_tunnel/route_dns.rs b/cloudflare/src/endpoints/cfd_tunnel/route_dns.rs
index ae747661..c2d842f6 100644
--- a/cloudflare/src/endpoints/cfd_tunnel/route_dns.rs
+++ b/cloudflare/src/endpoints/cfd_tunnel/route_dns.rs
@@ -30,7 +30,7 @@ impl EndpointSpec for RouteTunnel<'_> {
         format!("zones/{}/tunnels/{}/routes", self.zone_tag, self.tunnel_id)
     }
     #[inline]
-    fn body(&self) -> Option<RequestBody> {
+    fn body(&self) -> Option<RequestBody<'_>> {
         let body = serde_json::to_string(&self.params).unwrap();
         Some(RequestBody::Json(body))
     }
diff --git a/cloudflare/src/endpoints/cfd_tunnel/update_tunnel.rs b/cloudflare/src/endpoints/cfd_tunnel/update_tunnel.rs
index 79e080d4..94e869aa 100644
--- a/cloudflare/src/endpoints/cfd_tunnel/update_tunnel.rs
+++ b/cloudflare/src/endpoints/cfd_tunnel/update_tunnel.rs
@@ -34,7 +34,7 @@ impl EndpointSpec for UpdateTunnel<'_> {
         )
     }
     #[inline]
-    fn body(&self) -> Option<RequestBody> {
+    fn body(&self) -> Option<RequestBody<'_>> {
         let body = serde_json::to_string(&self.params).unwrap();
         Some(RequestBody::Json(body))
     }
diff --git a/cloudflare/src/endpoints/dns/dns.rs b/cloudflare/src/endpoints/dns/dns.rs
index 66afd829..9ee2f086 100644
--- a/cloudflare/src/endpoints/dns/dns.rs
+++ b/cloudflare/src/endpoints/dns/dns.rs
@@ -49,7 +49,7 @@ impl EndpointSpec for CreateDnsRecord<'_> {
         format!("zones/{}/dns_records", self.zone_identifier)
     }
     #[inline]
-    fn body(&self) -> Option<RequestBody> {
+    fn body(&self) -> Option<RequestBody<'_>> {
         let body = serde_json::to_string(&self.params).unwrap();
         Some(RequestBody::Json(body))
     }
@@ -117,7 +117,7 @@ impl EndpointSpec for UpdateDnsRecord<'_> {
         )
     }
     #[inline]
-    fn body(&self) -> Option<RequestBody> {
+    fn body(&self) -> Option<RequestBody<'_>> {
         let body = serde_json::to_string(&self.params).unwrap();
         Some(RequestBody::Json(body))
     }
diff --git a/cloudflare/src/endpoints/load_balancing/create_lb.rs b/cloudflare/src/endpoints/load_balancing/create_lb.rs
index b3dd1c6f..31ed2b53 100644
--- a/cloudflare/src/endpoints/load_balancing/create_lb.rs
+++ b/cloudflare/src/endpoints/load_balancing/create_lb.rs
@@ -67,7 +67,7 @@ impl EndpointSpec for CreateLoadBalancer<'_> {
         format!("zones/{}/load_balancers", self.zone_identifier)
     }
     #[inline]
-    fn body(&self) -> Option<RequestBody> {
+    fn body(&self) -> Option<RequestBody<'_>> {
         let body = serde_json::to_string(&self.params).unwrap();
         Some(RequestBody::Json(body))
     }
diff --git a/cloudflare/src/endpoints/load_balancing/create_pool.rs b/cloudflare/src/endpoints/load_balancing/create_pool.rs
index 9a1aaaa5..9f0bc2c0 100644
--- a/cloudflare/src/endpoints/load_balancing/create_pool.rs
+++ b/cloudflare/src/endpoints/load_balancing/create_pool.rs
@@ -63,7 +63,7 @@ impl EndpointSpec for CreatePool<'_> {
         format!("accounts/{}/load_balancers/pools", self.account_identifier)
     }
     #[inline]
-    fn body(&self) -> Option<RequestBody> {
+    fn body(&self) -> Option<RequestBody<'_>> {
         let body = serde_json::to_string(&self.params).unwrap();
         Some(RequestBody::Json(body))
     }
diff --git a/cloudflare/src/endpoints/workers/create_route.rs b/cloudflare/src/endpoints/workers/create_route.rs
index ead47d74..ac530b05 100644
--- a/cloudflare/src/endpoints/workers/create_route.rs
+++ b/cloudflare/src/endpoints/workers/create_route.rs
@@ -25,7 +25,7 @@ impl EndpointSpec for CreateRoute<'_> {
         format!("zones/{}/workers/routes", self.zone_identifier)
     }
     #[inline]
-    fn body(&self) -> Option<RequestBody> {
+    fn body(&self) -> Option<RequestBody<'_>> {
         let body = serde_json::to_string(&self.params).unwrap();
         Some(RequestBody::Json(body))
     }
diff --git a/cloudflare/src/endpoints/workers/create_secret.rs b/cloudflare/src/endpoints/workers/create_secret.rs
index eb13c45b..ec64c3b8 100644
--- a/cloudflare/src/endpoints/workers/create_secret.rs
+++ b/cloudflare/src/endpoints/workers/create_secret.rs
@@ -31,7 +31,7 @@ impl EndpointSpec for CreateSecret<'_> {
         )
     }
     #[inline]
-    fn body(&self) -> Option<RequestBody> {
+    fn body(&self) -> Option<RequestBody<'_>> {
         let body = serde_json::to_string(&self.params).unwrap();
         Some(RequestBody::Json(body))
     }
diff --git a/cloudflare/src/endpoints/workers/create_tail.rs b/cloudflare/src/endpoints/workers/create_tail.rs
index be6bb79a..dc697397 100644
--- a/cloudflare/src/endpoints/workers/create_tail.rs
+++ b/cloudflare/src/endpoints/workers/create_tail.rs
@@ -35,7 +35,7 @@ impl EndpointSpec for CreateTail<'_> {
         )
     }
     #[inline]
-    fn body(&self) -> Option<RequestBody> {
+    fn body(&self) -> Option<RequestBody<'_>> {
         if self.params.url.is_some() {
             let body = serde_json::to_string(&self.params).unwrap();
             Some(RequestBody::Json(body))
diff --git a/cloudflare/src/endpoints/workerskv/create_namespace.rs b/cloudflare/src/endpoints/workerskv/create_namespace.rs
index 55d29412..7a228ad3 100644
--- a/cloudflare/src/endpoints/workerskv/create_namespace.rs
+++ b/cloudflare/src/endpoints/workerskv/create_namespace.rs
@@ -28,7 +28,7 @@ impl EndpointSpec for CreateNamespace<'_> {
         format!("accounts/{}/storage/kv/namespaces", self.account_identifier)
     }
     #[inline]
-    fn body(&self) -> Option<RequestBody> {
+    fn body(&self) -> Option<RequestBody<'_>> {
         let body = serde_json::to_string(&self.params).unwrap();
         Some(RequestBody::Json(body))
     }
diff --git a/cloudflare/src/endpoints/workerskv/delete_bulk.rs b/cloudflare/src/endpoints/workerskv/delete_bulk.rs
index de425d25..6c80b37d 100644
--- a/cloudflare/src/endpoints/workerskv/delete_bulk.rs
+++ b/cloudflare/src/endpoints/workerskv/delete_bulk.rs
@@ -29,7 +29,7 @@ impl EndpointSpec for DeleteBulk<'_> {
         )
     }
     #[inline]
-    fn body(&self) -> Option<RequestBody> {
+    fn body(&self) -> Option<RequestBody<'_>> {
         if self.bulk_keys.len() > 10_000 {
             panic!("Bulk delete request can only contain up to 10,000 keys.");
         }
diff --git a/cloudflare/src/endpoints/workerskv/rename_namespace.rs b/cloudflare/src/endpoints/workerskv/rename_namespace.rs
index 9e6d4c37..18401016 100644
--- a/cloudflare/src/endpoints/workerskv/rename_namespace.rs
+++ b/cloudflare/src/endpoints/workerskv/rename_namespace.rs
@@ -27,7 +27,7 @@ impl EndpointSpec for RenameNamespace<'_> {
         )
     }
     #[inline]
-    fn body(&self) -> Option<RequestBody> {
+    fn body(&self) -> Option<RequestBody<'_>> {
         let body = serde_json::to_string(&self.params).unwrap();
         Some(RequestBody::Json(body))
     }
diff --git a/cloudflare/src/endpoints/workerskv/write_bulk.rs b/cloudflare/src/endpoints/workerskv/write_bulk.rs
index e0a6ab36..29e57ffc 100644
--- a/cloudflare/src/endpoints/workerskv/write_bulk.rs
+++ b/cloudflare/src/endpoints/workerskv/write_bulk.rs
@@ -38,7 +38,7 @@ impl EndpointSpec for WriteBulk<'_> {
         )
     }
     #[inline]
-    fn body(&self) -> Option<RequestBody> {
+    fn body(&self) -> Option<RequestBody<'_>> {
         if self.bulk_key_value_pairs.len() > 10_000 {
             panic!("Bulk write request must have 10,000 key-value pairs or less.");
         }
diff --git a/cloudflare/src/endpoints/workerskv/write_key.rs b/cloudflare/src/endpoints/workerskv/write_key.rs
index 927002e8..f4532974 100644
--- a/cloudflare/src/endpoints/workerskv/write_key.rs
+++ b/cloudflare/src/endpoints/workerskv/write_key.rs
@@ -53,7 +53,7 @@ impl EndpointSpec for WriteKey<'_> {
         serialize_query(&self.params)
     }
     #[inline]
-    fn body(&self) -> Option<RequestBody> {
+    fn body(&self) -> Option<RequestBody<'_>> {
         match &self.body {
             WriteKeyBody::Value(value) => Some(RequestBody::Raw(value.clone())),
             WriteKeyBody::Metadata(metadata) => Some(RequestBody::MultiPart(metadata)),
diff --git a/cloudflare/src/endpoints/zones/zone.rs b/cloudflare/src/endpoints/zones/zone.rs
index 15726c47..4f5d43eb 100644
--- a/cloudflare/src/endpoints/zones/zone.rs
+++ b/cloudflare/src/endpoints/zones/zone.rs
@@ -68,7 +68,7 @@ impl EndpointSpec for CreateZone<'_> {
     }
 
     #[inline]
-    fn body(&self) -> Option<RequestBody> {
+    fn body(&self) -> Option<RequestBody<'_>> {
         let body = serde_json::to_string(&self.params).unwrap();
         Some(RequestBody::Json(body))
     }
diff --git a/cloudflare/src/framework/endpoint.rs b/cloudflare/src/framework/endpoint.rs
index 1d8f4410..74e0967a 100644
--- a/cloudflare/src/framework/endpoint.rs
+++ b/cloudflare/src/framework/endpoint.rs
@@ -73,7 +73,7 @@ pub mod spec {
         ///
         /// Implementors should inline this.
         #[inline]
-        fn body(&self) -> Option<RequestBody> {
+        fn body(&self) -> Option<RequestBody<'_>> {
             None
         }
 
diff --git a/cloudflare/src/framework/mod.rs b/cloudflare/src/framework/mod.rs
index 6740be2d..c5cbfb5e 100644
--- a/cloudflare/src/framework/mod.rs
+++ b/cloudflare/src/framework/mod.rs
@@ -44,7 +44,7 @@ pub enum Environment {
     Custom(String),
 }
 
-impl<'a> From<&'a Environment> for url::Url {
+impl From<&Environment> for url::Url {
     fn from(environment: &Environment) -> Self {
         match environment {
             Environment::Production => {
diff --git a/cloudflare/src/framework/response/mod.rs b/cloudflare/src/framework/response/mod.rs
index 64c6f010..6c8b9604 100644
--- a/cloudflare/src/framework/response/mod.rs
+++ b/cloudflare/src/framework/response/mod.rs
@@ -4,18 +4,22 @@ pub use api_fail::*;
 use serde::de::DeserializeOwned;
 use serde::{Deserialize, Serialize};
 use serde_json::value::Value as JsonValue;
+use serde_with::{serde_as, DefaultOnNull};
 use std::collections::HashMap;
 use std::error::Error;
 use std::fmt;
 use std::fmt::Debug;
 
+#[serde_as]
 #[derive(Serialize, Deserialize, Debug, Eq, PartialEq)]
 pub struct ApiSuccess<ResultType> {
     pub result: ResultType,
     pub result_info: Option<JsonValue>,
     #[serde(default)]
+    #[serde_as(deserialize_as = "DefaultOnNull")]
     pub messages: Vec<ResponseInfo>,
     #[serde(default)]
+    #[serde_as(deserialize_as = "DefaultOnNull")]
     pub errors: Vec<ResponseInfo>,
 }