diff --git a/src/wasm-lib/Cargo.lock b/src/wasm-lib/Cargo.lock
index 34b3d2836..360dc5708 100644
--- a/src/wasm-lib/Cargo.lock
+++ b/src/wasm-lib/Cargo.lock
@@ -1417,6 +1417,7 @@ dependencies = [
  "futures",
  "git_rev",
  "gltf-json",
+ "http 0.2.12",
  "iai",
  "image",
  "insta",
@@ -1481,9 +1482,9 @@ dependencies = [
 
 [[package]]
 name = "kittycad"
-version = "0.3.14"
+version = "0.3.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce5e9c51976882cdf6777557fd8c3ee68b00bb53e9307fc1721acb397f2ece9a"
+checksum = "1a9621df809fa105ae28b01586c52ce46561e166702babb50e5bcc5097a8ce62"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -1869,7 +1870,7 @@ dependencies = [
  "bincode",
  "either",
  "fnv",
- "itertools 0.10.5",
+ "itertools 0.12.1",
  "lazy_static",
  "nom",
  "quick-xml",
diff --git a/src/wasm-lib/Cargo.toml b/src/wasm-lib/Cargo.toml
index cd68fcee4..fa7e13048 100644
--- a/src/wasm-lib/Cargo.toml
+++ b/src/wasm-lib/Cargo.toml
@@ -70,7 +70,8 @@ members = [
 ]
 
 [workspace.dependencies]
-kittycad = { version = "0.3.14", default-features = false, features = ["js", "requests"] }
+http = "0.2.12"
+kittycad = { version = "0.3.16", default-features = false, features = ["js", "requests"] }
 kittycad-modeling-session = "0.1.4"
 
 [[test]]
diff --git a/src/wasm-lib/kcl/Cargo.toml b/src/wasm-lib/kcl/Cargo.toml
index 7d5857bf0..8939b732d 100644
--- a/src/wasm-lib/kcl/Cargo.toml
+++ b/src/wasm-lib/kcl/Cargo.toml
@@ -25,6 +25,7 @@ form_urlencoded = "1.2.1"
 futures = { version = "0.3.30" }
 git_rev = "0.1.0"
 gltf-json = "1.4.1"
+http = { workspace = true }
 image = { version = "0.25.1", default-features = false, features = ["png"] }
 kittycad = { workspace = true, features = ["clap"] }
 lazy_static = "1.5.0"
diff --git a/src/wasm-lib/kcl/src/executor.rs b/src/wasm-lib/kcl/src/executor.rs
index e7f7c81f5..1759c9191 100644
--- a/src/wasm-lib/kcl/src/executor.rs
+++ b/src/wasm-lib/kcl/src/executor.rs
@@ -1663,9 +1663,13 @@ impl From<crate::settings::types::ModelingSettings> for ExecutorSettings {
 
 impl ExecutorContext {
     /// Create a new default executor context.
+    /// Also returns the response HTTP headers from the server.
     #[cfg(not(target_arch = "wasm32"))]
-    pub async fn new(client: &kittycad::Client, settings: ExecutorSettings) -> Result<Self> {
-        let ws = client
+    pub async fn new_with_headers(
+        client: &kittycad::Client,
+        settings: ExecutorSettings,
+    ) -> Result<(Self, http::HeaderMap)> {
+        let (ws, headers) = client
             .modeling()
             .commands_ws(
                 None,
@@ -1697,13 +1701,21 @@ impl ExecutorContext {
             )
             .await?;
 
-        Ok(Self {
+        let slf = Self {
             engine,
             fs: Arc::new(FileManager::new()),
             stdlib: Arc::new(StdLib::new()),
             settings,
             is_mock: false,
-        })
+        };
+        Ok((slf, headers))
+    }
+
+    #[cfg(not(target_arch = "wasm32"))]
+    /// Create a new default executor context.
+    pub async fn new(client: &kittycad::Client, settings: ExecutorSettings) -> Result<Self> {
+        let (slf, _headers) = Self::new_with_headers(client, settings).await?;
+        Ok(slf)
     }
 
     /// For executing unit tests.
diff --git a/src/wasm-lib/kcl/src/std/shell.rs b/src/wasm-lib/kcl/src/std/shell.rs
index f43e32ff3..64e8fbe2b 100644
--- a/src/wasm-lib/kcl/src/std/shell.rs
+++ b/src/wasm-lib/kcl/src/std/shell.rs
@@ -119,6 +119,7 @@ async fn inner_shell(
     args.batch_modeling_cmd(
         uuid::Uuid::new_v4(),
         ModelingCmd::Solid3DShellFace {
+            hollow: false,
             face_ids,
             object_id: extrude_group.id,
             shell_thickness: data.thickness,