diff --git a/.circleci/config.yml b/.circleci/config.yml
index 884cbb3261..28199edeb0 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -124,6 +124,7 @@ commands:
             pip install uv
             cd samples/glean-sym-test
             make run
+            make run-noop
 
   install-rustup:
     steps:
diff --git a/glean-core/glean-sym/Cargo.toml b/glean-core/glean-sym/Cargo.toml
index 612edafeb1..e713a800ef 100644
--- a/glean-core/glean-sym/Cargo.toml
+++ b/glean-core/glean-sym/Cargo.toml
@@ -17,3 +17,7 @@ uniffi = "0.31.0"
 xshell = "0.2.7"
 glean-sym-parser = { path = "../../tools/glean-sym-parser" }
 glean-core = { path = "../" }
+
+[features]
+# No-op all metric type calls
+noop = []
diff --git a/glean-core/glean-sym/src/lib.rs b/glean-core/glean-sym/src/lib.rs
index c41439e210..6c784bb153 100644
--- a/glean-core/glean-sym/src/lib.rs
+++ b/glean-core/glean-sym/src/lib.rs
@@ -2,6 +2,7 @@
 // License, v. 2.0. If a copy of the MPL was not distributed with this
 // file, You can obtain one at https://mozilla.org/MPL/2.0/.
 
+#[cfg(not(feature = "noop"))]
 use std::sync::LazyLock;
 
 #[doc(hidden)]
@@ -26,9 +27,11 @@ pub mod __export {
     pub use once_cell::sync::Lazy;
 }
 
+#[cfg(not(feature = "noop"))]
 const FFI_CONTRACT_VERSION: u32 = include!("contract_version.txt");
 
 // Based on https://searchfox.org/firefox-main/rev/6193f8fd1172486e3ce941b8de251b9d1a4dfa0b/toolkit/crashreporter/client/app/src/net/libcurl.rs#84
+#[cfg(not(feature = "noop"))]
 macro_rules! library_binding {
     ( $localname:ident members[$($members:tt)*] load[$($load:tt)*] fn $name:ident $args:tt $( -> $ret:ty )? ; $($rest:tt)* ) => {
         library_binding! {
@@ -106,10 +109,12 @@ macro_rules! library_binding {
 
 pub mod metrics;
 pub mod types;
+#[cfg(not(feature = "noop"))]
 mod util;
 
 pub use types::PingType;
 
+#[cfg(not(feature = "noop"))]
 static GLEAN: LazyLock<metrics::GleanSym> = LazyLock::new(|| metrics::GleanSym::load().unwrap());
 
 // This boilerplate is usually generated by `uniffi::setup_scaffolding!()`
@@ -124,12 +129,14 @@ pub struct UniFfiTag;
 /// The namespace glean-sym FFI items are placed in.
 /// Required by UniFFI to match up items.
 #[allow(clippy::large_const_arrays)] // this is moved into the `static` below, we can't make it a static itself.
+#[cfg(not(feature = "noop"))]
 const UNIFFI_META_CONST_NAMESPACE_GLEAN_SYM: ::uniffi::MetadataBuffer =
     ::uniffi::MetadataBuffer::from_code(::uniffi::metadata::codes::NAMESPACE)
         .concat_str("glean_sym")
         .concat_str("glean_sym");
 #[doc(hidden)]
 #[unsafe(no_mangle)]
+#[cfg(not(feature = "noop"))]
 pub static UNIFFI_META_NAMESPACE_GLEAN_SYM: [::std::primitive::u8;
     UNIFFI_META_CONST_NAMESPACE_GLEAN_SYM.size] =
     UNIFFI_META_CONST_NAMESPACE_GLEAN_SYM.into_array();
diff --git a/glean-core/glean-sym/src/metrics.rs b/glean-core/glean-sym/src/metrics.rs
index 946de45432..124784ce28 100644
--- a/glean-core/glean-sym/src/metrics.rs
+++ b/glean-core/glean-sym/src/metrics.rs
@@ -13,19 +13,23 @@
 #![cfg_attr(rustfmt, rustfmt_skip)]
 
 use crate::types::*;
+#[cfg(not(feature = "noop"))]
 use crate::util::*;
 
 #[derive(uniffi::Record)]
+#[cfg_attr(feature = "noop", derive(Default))]
 pub(crate) struct PingType {
     handle: u64,
 }
 impl PingType {
     unsafe fn clone_handle(&self) -> u64 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let mut call_status = uniffi::RustCallStatus::default();
             (crate::GLEAN
                 .uniffi_glean_core_fn_clone_pingtype)(self.handle, &mut call_status)
         }
+        #[cfg(feature = "noop")] { 0 }
     }
 }
 impl PingType {
@@ -41,6 +45,7 @@ impl PingType {
         follows_collection_enabled: bool,
         uploader_capabilities: Vec<String>,
     ) -> Self {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let name = uniffi::FfiConverter::<crate::UniFfiTag>::lower(name);
             let include_client_id = uniffi::FfiConverter::<
@@ -95,8 +100,10 @@ impl PingType {
             name.destroy();
             Self { handle }
         }
+        #[cfg(feature = "noop")] Self { handle: 0 }
     }
     pub fn submit(&self, reason: Option<String>) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let reason = uniffi::FfiConverter::<crate::UniFfiTag>::lower(reason);
@@ -110,8 +117,10 @@ impl PingType {
             reason.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn set_enabled(&self, enabled: bool) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let enabled = uniffi::FfiConverter::<crate::UniFfiTag>::lower(enabled);
@@ -125,23 +134,28 @@ impl PingType {
             enabled.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
 }
 #[derive(uniffi::Record)]
+#[cfg_attr(feature = "noop", derive(Default))]
 pub struct CounterMetric {
     handle: u64,
 }
 impl CounterMetric {
     unsafe fn clone_handle(&self) -> u64 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let mut call_status = uniffi::RustCallStatus::default();
             (crate::GLEAN
                 .uniffi_glean_core_fn_clone_countermetric)(self.handle, &mut call_status)
         }
+        #[cfg(feature = "noop")] { 0 }
     }
 }
 impl CounterMetric {
     pub fn new(meta: CommonMetricData) -> Self {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let meta = uniffi::FfiConverter::<crate::UniFfiTag>::lower(meta);
             let mut call_status = uniffi::RustCallStatus::default();
@@ -153,8 +167,10 @@ impl CounterMetric {
             meta.destroy();
             Self { handle }
         }
+        #[cfg(feature = "noop")] Self { handle: 0 }
     }
     pub fn add(&self, amount: i32) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let amount = uniffi::FfiConverter::<crate::UniFfiTag>::lower(amount);
@@ -168,8 +184,10 @@ impl CounterMetric {
             amount.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_value(&self, ping_name: Option<String>) -> Option<i32> {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let ping_name = uniffi::FfiConverter::<crate::UniFfiTag>::lower(ping_name);
@@ -183,8 +201,10 @@ impl CounterMetric {
             ping_name.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let error = uniffi::FfiConverter::<crate::UniFfiTag>::lower(error);
@@ -198,14 +218,17 @@ impl CounterMetric {
             error.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
 }
 #[derive(uniffi::Record)]
+#[cfg_attr(feature = "noop", derive(Default))]
 pub struct TimespanMetric {
     handle: u64,
 }
 impl TimespanMetric {
     unsafe fn clone_handle(&self) -> u64 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let mut call_status = uniffi::RustCallStatus::default();
             (crate::GLEAN
@@ -214,10 +237,12 @@ impl TimespanMetric {
                 &mut call_status,
             )
         }
+        #[cfg(feature = "noop")] { 0 }
     }
 }
 impl TimespanMetric {
     pub fn new(meta: CommonMetricData, time_unit: TimeUnit) -> Self {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let meta = uniffi::FfiConverter::<crate::UniFfiTag>::lower(meta);
             let time_unit = uniffi::FfiConverter::<crate::UniFfiTag>::lower(time_unit);
@@ -232,8 +257,10 @@ impl TimespanMetric {
             meta.destroy();
             Self { handle }
         }
+        #[cfg(feature = "noop")] Self { handle: 0 }
     }
     pub fn start(&self) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let mut call_status = uniffi::RustCallStatus::default();
@@ -244,8 +271,10 @@ impl TimespanMetric {
             );
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn stop(&self) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let mut call_status = uniffi::RustCallStatus::default();
@@ -256,8 +285,10 @@ impl TimespanMetric {
             );
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn cancel(&self) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let mut call_status = uniffi::RustCallStatus::default();
@@ -268,8 +299,10 @@ impl TimespanMetric {
             );
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn set_raw_nanos(&self, elapsed: i64) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let elapsed = uniffi::FfiConverter::<crate::UniFfiTag>::lower(elapsed);
@@ -283,8 +316,10 @@ impl TimespanMetric {
             elapsed.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_value(&self, ping_name: Option<String>) -> Option<i64> {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let ping_name = uniffi::FfiConverter::<crate::UniFfiTag>::lower(ping_name);
@@ -298,8 +333,10 @@ impl TimespanMetric {
             ping_name.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let error = uniffi::FfiConverter::<crate::UniFfiTag>::lower(error);
@@ -313,23 +350,28 @@ impl TimespanMetric {
             error.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
 }
 #[derive(uniffi::Record)]
+#[cfg_attr(feature = "noop", derive(Default))]
 pub struct BooleanMetric {
     handle: u64,
 }
 impl BooleanMetric {
     unsafe fn clone_handle(&self) -> u64 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let mut call_status = uniffi::RustCallStatus::default();
             (crate::GLEAN
                 .uniffi_glean_core_fn_clone_booleanmetric)(self.handle, &mut call_status)
         }
+        #[cfg(feature = "noop")] { 0 }
     }
 }
 impl BooleanMetric {
     pub fn new(meta: CommonMetricData) -> Self {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let meta = uniffi::FfiConverter::<crate::UniFfiTag>::lower(meta);
             let mut call_status = uniffi::RustCallStatus::default();
@@ -341,8 +383,10 @@ impl BooleanMetric {
             meta.destroy();
             Self { handle }
         }
+        #[cfg(feature = "noop")] Self { handle: 0 }
     }
     pub fn set(&self, value: bool) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let value = uniffi::FfiConverter::<crate::UniFfiTag>::lower(value);
@@ -356,8 +400,10 @@ impl BooleanMetric {
             value.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_value(&self, ping_name: Option<String>) -> Option<bool> {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let ping_name = uniffi::FfiConverter::<crate::UniFfiTag>::lower(ping_name);
@@ -371,8 +417,10 @@ impl BooleanMetric {
             ping_name.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let error = uniffi::FfiConverter::<crate::UniFfiTag>::lower(error);
@@ -386,23 +434,28 @@ impl BooleanMetric {
             error.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
 }
 #[derive(uniffi::Record)]
+#[cfg_attr(feature = "noop", derive(Default))]
 pub struct StringMetric {
     handle: u64,
 }
 impl StringMetric {
     unsafe fn clone_handle(&self) -> u64 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let mut call_status = uniffi::RustCallStatus::default();
             (crate::GLEAN
                 .uniffi_glean_core_fn_clone_stringmetric)(self.handle, &mut call_status)
         }
+        #[cfg(feature = "noop")] { 0 }
     }
 }
 impl StringMetric {
     pub fn new(meta: CommonMetricData) -> Self {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let meta = uniffi::FfiConverter::<crate::UniFfiTag>::lower(meta);
             let mut call_status = uniffi::RustCallStatus::default();
@@ -414,8 +467,10 @@ impl StringMetric {
             meta.destroy();
             Self { handle }
         }
+        #[cfg(feature = "noop")] Self { handle: 0 }
     }
     pub fn set(&self, value: String) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let value = uniffi::FfiConverter::<crate::UniFfiTag>::lower(value);
@@ -429,8 +484,10 @@ impl StringMetric {
             value.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_value(&self, ping_name: Option<String>) -> Option<String> {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let ping_name = uniffi::FfiConverter::<crate::UniFfiTag>::lower(ping_name);
@@ -444,8 +501,10 @@ impl StringMetric {
             ping_name.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let error = uniffi::FfiConverter::<crate::UniFfiTag>::lower(error);
@@ -459,14 +518,17 @@ impl StringMetric {
             error.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
 }
 #[derive(uniffi::Record)]
+#[cfg_attr(feature = "noop", derive(Default))]
 pub struct StringListMetric {
     handle: u64,
 }
 impl StringListMetric {
     unsafe fn clone_handle(&self) -> u64 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let mut call_status = uniffi::RustCallStatus::default();
             (crate::GLEAN
@@ -475,10 +537,12 @@ impl StringListMetric {
                 &mut call_status,
             )
         }
+        #[cfg(feature = "noop")] { 0 }
     }
 }
 impl StringListMetric {
     pub fn new(meta: CommonMetricData) -> Self {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let meta = uniffi::FfiConverter::<crate::UniFfiTag>::lower(meta);
             let mut call_status = uniffi::RustCallStatus::default();
@@ -490,8 +554,10 @@ impl StringListMetric {
             meta.destroy();
             Self { handle }
         }
+        #[cfg(feature = "noop")] Self { handle: 0 }
     }
     pub fn add(&self, value: String) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let value = uniffi::FfiConverter::<crate::UniFfiTag>::lower(value);
@@ -505,8 +571,10 @@ impl StringListMetric {
             value.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn set(&self, value: Vec<String>) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let value = uniffi::FfiConverter::<crate::UniFfiTag>::lower(value);
@@ -520,8 +588,10 @@ impl StringListMetric {
             value.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_value(&self, ping_name: Option<String>) -> Option<Vec<String>> {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let ping_name = uniffi::FfiConverter::<crate::UniFfiTag>::lower(ping_name);
@@ -535,8 +605,10 @@ impl StringListMetric {
             ping_name.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let error = uniffi::FfiConverter::<crate::UniFfiTag>::lower(error);
@@ -550,23 +622,28 @@ impl StringListMetric {
             error.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
 }
 #[derive(uniffi::Record)]
+#[cfg_attr(feature = "noop", derive(Default))]
 pub struct UrlMetric {
     handle: u64,
 }
 impl UrlMetric {
     unsafe fn clone_handle(&self) -> u64 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let mut call_status = uniffi::RustCallStatus::default();
             (crate::GLEAN
                 .uniffi_glean_core_fn_clone_urlmetric)(self.handle, &mut call_status)
         }
+        #[cfg(feature = "noop")] { 0 }
     }
 }
 impl UrlMetric {
     pub fn new(meta: CommonMetricData) -> Self {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let meta = uniffi::FfiConverter::<crate::UniFfiTag>::lower(meta);
             let mut call_status = uniffi::RustCallStatus::default();
@@ -578,8 +655,10 @@ impl UrlMetric {
             meta.destroy();
             Self { handle }
         }
+        #[cfg(feature = "noop")] Self { handle: 0 }
     }
     pub fn set(&self, value: String) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let value = uniffi::FfiConverter::<crate::UniFfiTag>::lower(value);
@@ -593,8 +672,10 @@ impl UrlMetric {
             value.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_value(&self, ping_name: Option<String>) -> Option<String> {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let ping_name = uniffi::FfiConverter::<crate::UniFfiTag>::lower(ping_name);
@@ -608,8 +689,10 @@ impl UrlMetric {
             ping_name.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let error = uniffi::FfiConverter::<crate::UniFfiTag>::lower(error);
@@ -623,23 +706,28 @@ impl UrlMetric {
             error.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
 }
 #[derive(uniffi::Record)]
+#[cfg_attr(feature = "noop", derive(Default))]
 pub struct UuidMetric {
     handle: u64,
 }
 impl UuidMetric {
     unsafe fn clone_handle(&self) -> u64 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let mut call_status = uniffi::RustCallStatus::default();
             (crate::GLEAN
                 .uniffi_glean_core_fn_clone_uuidmetric)(self.handle, &mut call_status)
         }
+        #[cfg(feature = "noop")] { 0 }
     }
 }
 impl UuidMetric {
     pub fn new(meta: CommonMetricData) -> Self {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let meta = uniffi::FfiConverter::<crate::UniFfiTag>::lower(meta);
             let mut call_status = uniffi::RustCallStatus::default();
@@ -651,8 +739,10 @@ impl UuidMetric {
             meta.destroy();
             Self { handle }
         }
+        #[cfg(feature = "noop")] Self { handle: 0 }
     }
     pub fn set(&self, value: String) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let value = uniffi::FfiConverter::<crate::UniFfiTag>::lower(value);
@@ -666,8 +756,10 @@ impl UuidMetric {
             value.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn generate_and_set(&self) -> String {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let mut call_status = uniffi::RustCallStatus::default();
@@ -678,8 +770,10 @@ impl UuidMetric {
             );
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_value(&self, ping_name: Option<String>) -> Option<String> {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let ping_name = uniffi::FfiConverter::<crate::UniFfiTag>::lower(ping_name);
@@ -693,8 +787,10 @@ impl UuidMetric {
             ping_name.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let error = uniffi::FfiConverter::<crate::UniFfiTag>::lower(error);
@@ -708,14 +804,17 @@ impl UuidMetric {
             error.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
 }
 #[derive(uniffi::Record)]
+#[cfg_attr(feature = "noop", derive(Default))]
 pub struct QuantityMetric {
     handle: u64,
 }
 impl QuantityMetric {
     unsafe fn clone_handle(&self) -> u64 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let mut call_status = uniffi::RustCallStatus::default();
             (crate::GLEAN
@@ -724,10 +823,12 @@ impl QuantityMetric {
                 &mut call_status,
             )
         }
+        #[cfg(feature = "noop")] { 0 }
     }
 }
 impl QuantityMetric {
     pub fn new(meta: CommonMetricData) -> Self {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let meta = uniffi::FfiConverter::<crate::UniFfiTag>::lower(meta);
             let mut call_status = uniffi::RustCallStatus::default();
@@ -739,8 +840,10 @@ impl QuantityMetric {
             meta.destroy();
             Self { handle }
         }
+        #[cfg(feature = "noop")] Self { handle: 0 }
     }
     pub fn set(&self, value: i64) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let value = uniffi::FfiConverter::<crate::UniFfiTag>::lower(value);
@@ -754,8 +857,10 @@ impl QuantityMetric {
             value.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_value(&self, ping_name: Option<String>) -> Option<i64> {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let ping_name = uniffi::FfiConverter::<crate::UniFfiTag>::lower(ping_name);
@@ -769,8 +874,10 @@ impl QuantityMetric {
             ping_name.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let error = uniffi::FfiConverter::<crate::UniFfiTag>::lower(error);
@@ -784,14 +891,17 @@ impl QuantityMetric {
             error.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
 }
 #[derive(uniffi::Record)]
+#[cfg_attr(feature = "noop", derive(Default))]
 pub struct TimingDistributionMetric {
     handle: u64,
 }
 impl TimingDistributionMetric {
     unsafe fn clone_handle(&self) -> u64 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let mut call_status = uniffi::RustCallStatus::default();
             (crate::GLEAN
@@ -800,10 +910,12 @@ impl TimingDistributionMetric {
                 &mut call_status,
             )
         }
+        #[cfg(feature = "noop")] { 0 }
     }
 }
 impl TimingDistributionMetric {
     pub fn new(meta: CommonMetricData, time_unit: TimeUnit) -> Self {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let meta = uniffi::FfiConverter::<crate::UniFfiTag>::lower(meta);
             let time_unit = uniffi::FfiConverter::<crate::UniFfiTag>::lower(time_unit);
@@ -818,8 +930,10 @@ impl TimingDistributionMetric {
             meta.destroy();
             Self { handle }
         }
+        #[cfg(feature = "noop")] Self { handle: 0 }
     }
     pub fn start(&self) -> TimerId {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let mut call_status = uniffi::RustCallStatus::default();
@@ -830,8 +944,10 @@ impl TimingDistributionMetric {
             );
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn stop_and_accumulate(&self, timer_id: TimerId) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let timer_id = uniffi::FfiConverter::<crate::UniFfiTag>::lower(timer_id);
@@ -845,8 +961,10 @@ impl TimingDistributionMetric {
             timer_id.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn cancel(&self, timer_id: TimerId) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let timer_id = uniffi::FfiConverter::<crate::UniFfiTag>::lower(timer_id);
@@ -860,8 +978,10 @@ impl TimingDistributionMetric {
             timer_id.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn accumulate_samples(&self, samples: Vec<i64>) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let samples = uniffi::FfiConverter::<crate::UniFfiTag>::lower(samples);
@@ -875,8 +995,10 @@ impl TimingDistributionMetric {
             samples.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn accumulate_single_sample(&self, sample: i64) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let sample = uniffi::FfiConverter::<crate::UniFfiTag>::lower(sample);
@@ -890,8 +1012,10 @@ impl TimingDistributionMetric {
             sample.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_value(&self, ping_name: Option<String>) -> Option<DistributionData> {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let ping_name = uniffi::FfiConverter::<crate::UniFfiTag>::lower(ping_name);
@@ -905,8 +1029,10 @@ impl TimingDistributionMetric {
             ping_name.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let error = uniffi::FfiConverter::<crate::UniFfiTag>::lower(error);
@@ -920,14 +1046,17 @@ impl TimingDistributionMetric {
             error.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
 }
 #[derive(uniffi::Record)]
+#[cfg_attr(feature = "noop", derive(Default))]
 pub struct MemoryDistributionMetric {
     handle: u64,
 }
 impl MemoryDistributionMetric {
     unsafe fn clone_handle(&self) -> u64 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let mut call_status = uniffi::RustCallStatus::default();
             (crate::GLEAN
@@ -936,10 +1065,12 @@ impl MemoryDistributionMetric {
                 &mut call_status,
             )
         }
+        #[cfg(feature = "noop")] { 0 }
     }
 }
 impl MemoryDistributionMetric {
     pub fn new(meta: CommonMetricData, memory_unit: MemoryUnit) -> Self {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let meta = uniffi::FfiConverter::<crate::UniFfiTag>::lower(meta);
             let memory_unit = uniffi::FfiConverter::<
@@ -956,8 +1087,10 @@ impl MemoryDistributionMetric {
             meta.destroy();
             Self { handle }
         }
+        #[cfg(feature = "noop")] Self { handle: 0 }
     }
     pub fn accumulate(&self, sample: i64) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let sample = uniffi::FfiConverter::<crate::UniFfiTag>::lower(sample);
@@ -971,8 +1104,10 @@ impl MemoryDistributionMetric {
             sample.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn accumulate_samples(&self, samples: Vec<i64>) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let samples = uniffi::FfiConverter::<crate::UniFfiTag>::lower(samples);
@@ -986,8 +1121,10 @@ impl MemoryDistributionMetric {
             samples.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_value(&self, ping_name: Option<String>) -> Option<DistributionData> {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let ping_name = uniffi::FfiConverter::<crate::UniFfiTag>::lower(ping_name);
@@ -1001,8 +1138,10 @@ impl MemoryDistributionMetric {
             ping_name.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let error = uniffi::FfiConverter::<crate::UniFfiTag>::lower(error);
@@ -1016,14 +1155,17 @@ impl MemoryDistributionMetric {
             error.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
 }
 #[derive(uniffi::Record)]
+#[cfg_attr(feature = "noop", derive(Default))]
 pub struct CustomDistributionMetric {
     handle: u64,
 }
 impl CustomDistributionMetric {
     unsafe fn clone_handle(&self) -> u64 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let mut call_status = uniffi::RustCallStatus::default();
             (crate::GLEAN
@@ -1032,6 +1174,7 @@ impl CustomDistributionMetric {
                 &mut call_status,
             )
         }
+        #[cfg(feature = "noop")] { 0 }
     }
 }
 impl CustomDistributionMetric {
@@ -1042,6 +1185,7 @@ impl CustomDistributionMetric {
         bucket_count: i64,
         histogram_type: HistogramType,
     ) -> Self {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let meta = uniffi::FfiConverter::<crate::UniFfiTag>::lower(meta);
             let range_min = uniffi::FfiConverter::<crate::UniFfiTag>::lower(range_min);
@@ -1069,8 +1213,10 @@ impl CustomDistributionMetric {
             meta.destroy();
             Self { handle }
         }
+        #[cfg(feature = "noop")] Self { handle: 0 }
     }
     pub fn accumulate_samples(&self, samples: Vec<i64>) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let samples = uniffi::FfiConverter::<crate::UniFfiTag>::lower(samples);
@@ -1084,8 +1230,10 @@ impl CustomDistributionMetric {
             samples.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn accumulate_single_sample(&self, sample: i64) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let sample = uniffi::FfiConverter::<crate::UniFfiTag>::lower(sample);
@@ -1099,8 +1247,10 @@ impl CustomDistributionMetric {
             sample.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_value(&self, ping_name: Option<String>) -> Option<DistributionData> {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let ping_name = uniffi::FfiConverter::<crate::UniFfiTag>::lower(ping_name);
@@ -1114,8 +1264,10 @@ impl CustomDistributionMetric {
             ping_name.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let error = uniffi::FfiConverter::<crate::UniFfiTag>::lower(error);
@@ -1129,14 +1281,17 @@ impl CustomDistributionMetric {
             error.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
 }
 #[derive(uniffi::Record)]
+#[cfg_attr(feature = "noop", derive(Default))]
 pub struct DatetimeMetric {
     handle: u64,
 }
 impl DatetimeMetric {
     unsafe fn clone_handle(&self) -> u64 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let mut call_status = uniffi::RustCallStatus::default();
             (crate::GLEAN
@@ -1145,10 +1300,12 @@ impl DatetimeMetric {
                 &mut call_status,
             )
         }
+        #[cfg(feature = "noop")] { 0 }
     }
 }
 impl DatetimeMetric {
     pub fn new(meta: CommonMetricData, time_unit: TimeUnit) -> Self {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let meta = uniffi::FfiConverter::<crate::UniFfiTag>::lower(meta);
             let time_unit = uniffi::FfiConverter::<crate::UniFfiTag>::lower(time_unit);
@@ -1163,8 +1320,10 @@ impl DatetimeMetric {
             meta.destroy();
             Self { handle }
         }
+        #[cfg(feature = "noop")] Self { handle: 0 }
     }
     pub fn set(&self, value: Option<Datetime>) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let value = uniffi::FfiConverter::<crate::UniFfiTag>::lower(value);
@@ -1178,8 +1337,10 @@ impl DatetimeMetric {
             value.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_value(&self, ping_name: Option<String>) -> Option<Datetime> {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let ping_name = uniffi::FfiConverter::<crate::UniFfiTag>::lower(ping_name);
@@ -1193,8 +1354,10 @@ impl DatetimeMetric {
             ping_name.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_value_as_string(&self, ping_name: Option<String>) -> Option<String> {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let ping_name = uniffi::FfiConverter::<crate::UniFfiTag>::lower(ping_name);
@@ -1208,8 +1371,10 @@ impl DatetimeMetric {
             ping_name.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let error = uniffi::FfiConverter::<crate::UniFfiTag>::lower(error);
@@ -1223,23 +1388,28 @@ impl DatetimeMetric {
             error.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
 }
 #[derive(uniffi::Record)]
+#[cfg_attr(feature = "noop", derive(Default))]
 pub(crate) struct EventMetric {
     handle: u64,
 }
 impl EventMetric {
     unsafe fn clone_handle(&self) -> u64 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let mut call_status = uniffi::RustCallStatus::default();
             (crate::GLEAN
                 .uniffi_glean_core_fn_clone_eventmetric)(self.handle, &mut call_status)
         }
+        #[cfg(feature = "noop")] { 0 }
     }
 }
 impl EventMetric {
     pub fn new(meta: CommonMetricData, allowed_extra_keys: Vec<String>) -> Self {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let meta = uniffi::FfiConverter::<crate::UniFfiTag>::lower(meta);
             let allowed_extra_keys = uniffi::FfiConverter::<
@@ -1256,8 +1426,10 @@ impl EventMetric {
             meta.destroy();
             Self { handle }
         }
+        #[cfg(feature = "noop")] Self { handle: 0 }
     }
     pub fn record(&self, extra: ::std::collections::HashMap<String, String>) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let extra = uniffi::FfiConverter::<crate::UniFfiTag>::lower(extra);
@@ -1271,11 +1443,13 @@ impl EventMetric {
             extra.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_value(
         &self,
         ping_name: Option<String>,
     ) -> Option<Vec<RecordedEvent>> {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let ping_name = uniffi::FfiConverter::<crate::UniFfiTag>::lower(ping_name);
@@ -1289,8 +1463,10 @@ impl EventMetric {
             ping_name.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let error = uniffi::FfiConverter::<crate::UniFfiTag>::lower(error);
@@ -1304,23 +1480,28 @@ impl EventMetric {
             error.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
 }
 #[derive(uniffi::Record)]
+#[cfg_attr(feature = "noop", derive(Default))]
 pub struct RateMetric {
     handle: u64,
 }
 impl RateMetric {
     unsafe fn clone_handle(&self) -> u64 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let mut call_status = uniffi::RustCallStatus::default();
             (crate::GLEAN
                 .uniffi_glean_core_fn_clone_ratemetric)(self.handle, &mut call_status)
         }
+        #[cfg(feature = "noop")] { 0 }
     }
 }
 impl RateMetric {
     pub fn new(meta: CommonMetricData) -> Self {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let meta = uniffi::FfiConverter::<crate::UniFfiTag>::lower(meta);
             let mut call_status = uniffi::RustCallStatus::default();
@@ -1332,8 +1513,10 @@ impl RateMetric {
             meta.destroy();
             Self { handle }
         }
+        #[cfg(feature = "noop")] Self { handle: 0 }
     }
     pub fn add_to_numerator(&self, amount: i32) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let amount = uniffi::FfiConverter::<crate::UniFfiTag>::lower(amount);
@@ -1347,8 +1530,10 @@ impl RateMetric {
             amount.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn add_to_denominator(&self, amount: i32) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let amount = uniffi::FfiConverter::<crate::UniFfiTag>::lower(amount);
@@ -1362,8 +1547,10 @@ impl RateMetric {
             amount.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_value(&self, ping_name: Option<String>) -> Option<Rate> {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let ping_name = uniffi::FfiConverter::<crate::UniFfiTag>::lower(ping_name);
@@ -1377,8 +1564,10 @@ impl RateMetric {
             ping_name.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let error = uniffi::FfiConverter::<crate::UniFfiTag>::lower(error);
@@ -1392,14 +1581,17 @@ impl RateMetric {
             error.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
 }
 #[derive(uniffi::Record)]
+#[cfg_attr(feature = "noop", derive(Default))]
 pub struct DenominatorMetric {
     handle: u64,
 }
 impl DenominatorMetric {
     unsafe fn clone_handle(&self) -> u64 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let mut call_status = uniffi::RustCallStatus::default();
             (crate::GLEAN
@@ -1408,10 +1600,12 @@ impl DenominatorMetric {
                 &mut call_status,
             )
         }
+        #[cfg(feature = "noop")] { 0 }
     }
 }
 impl DenominatorMetric {
     pub fn new(meta: CommonMetricData, numerators: Vec<CommonMetricData>) -> Self {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let meta = uniffi::FfiConverter::<crate::UniFfiTag>::lower(meta);
             let numerators = uniffi::FfiConverter::<crate::UniFfiTag>::lower(numerators);
@@ -1426,8 +1620,10 @@ impl DenominatorMetric {
             meta.destroy();
             Self { handle }
         }
+        #[cfg(feature = "noop")] Self { handle: 0 }
     }
     pub fn add(&self, amount: i32) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let amount = uniffi::FfiConverter::<crate::UniFfiTag>::lower(amount);
@@ -1441,8 +1637,10 @@ impl DenominatorMetric {
             amount.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_value(&self, ping_name: Option<String>) -> Option<i32> {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let ping_name = uniffi::FfiConverter::<crate::UniFfiTag>::lower(ping_name);
@@ -1456,8 +1654,10 @@ impl DenominatorMetric {
             ping_name.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let error = uniffi::FfiConverter::<crate::UniFfiTag>::lower(error);
@@ -1471,14 +1671,17 @@ impl DenominatorMetric {
             error.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
 }
 #[derive(uniffi::Record)]
+#[cfg_attr(feature = "noop", derive(Default))]
 pub struct NumeratorMetric {
     handle: u64,
 }
 impl NumeratorMetric {
     unsafe fn clone_handle(&self) -> u64 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let mut call_status = uniffi::RustCallStatus::default();
             (crate::GLEAN
@@ -1487,10 +1690,12 @@ impl NumeratorMetric {
                 &mut call_status,
             )
         }
+        #[cfg(feature = "noop")] { 0 }
     }
 }
 impl NumeratorMetric {
     pub fn new(meta: CommonMetricData) -> Self {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let meta = uniffi::FfiConverter::<crate::UniFfiTag>::lower(meta);
             let mut call_status = uniffi::RustCallStatus::default();
@@ -1502,8 +1707,10 @@ impl NumeratorMetric {
             meta.destroy();
             Self { handle }
         }
+        #[cfg(feature = "noop")] Self { handle: 0 }
     }
     pub fn add_to_numerator(&self, amount: i32) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let amount = uniffi::FfiConverter::<crate::UniFfiTag>::lower(amount);
@@ -1517,8 +1724,10 @@ impl NumeratorMetric {
             amount.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_value(&self, ping_name: Option<String>) -> Option<Rate> {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let ping_name = uniffi::FfiConverter::<crate::UniFfiTag>::lower(ping_name);
@@ -1532,8 +1741,10 @@ impl NumeratorMetric {
             ping_name.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let error = uniffi::FfiConverter::<crate::UniFfiTag>::lower(error);
@@ -1547,23 +1758,28 @@ impl NumeratorMetric {
             error.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
 }
 #[derive(uniffi::Record)]
+#[cfg_attr(feature = "noop", derive(Default))]
 pub struct TextMetric {
     handle: u64,
 }
 impl TextMetric {
     unsafe fn clone_handle(&self) -> u64 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let mut call_status = uniffi::RustCallStatus::default();
             (crate::GLEAN
                 .uniffi_glean_core_fn_clone_textmetric)(self.handle, &mut call_status)
         }
+        #[cfg(feature = "noop")] { 0 }
     }
 }
 impl TextMetric {
     pub fn new(meta: CommonMetricData) -> Self {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let meta = uniffi::FfiConverter::<crate::UniFfiTag>::lower(meta);
             let mut call_status = uniffi::RustCallStatus::default();
@@ -1575,8 +1791,10 @@ impl TextMetric {
             meta.destroy();
             Self { handle }
         }
+        #[cfg(feature = "noop")] Self { handle: 0 }
     }
     pub fn set(&self, value: String) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let value = uniffi::FfiConverter::<crate::UniFfiTag>::lower(value);
@@ -1590,8 +1808,10 @@ impl TextMetric {
             value.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_value(&self, ping_name: Option<String>) -> Option<String> {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let ping_name = uniffi::FfiConverter::<crate::UniFfiTag>::lower(ping_name);
@@ -1605,8 +1825,10 @@ impl TextMetric {
             ping_name.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let error = uniffi::FfiConverter::<crate::UniFfiTag>::lower(error);
@@ -1620,23 +1842,28 @@ impl TextMetric {
             error.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
 }
 #[derive(uniffi::Record)]
+#[cfg_attr(feature = "noop", derive(Default))]
 pub struct ObjectMetric {
     handle: u64,
 }
 impl ObjectMetric {
     unsafe fn clone_handle(&self) -> u64 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let mut call_status = uniffi::RustCallStatus::default();
             (crate::GLEAN
                 .uniffi_glean_core_fn_clone_objectmetric)(self.handle, &mut call_status)
         }
+        #[cfg(feature = "noop")] { 0 }
     }
 }
 impl ObjectMetric {
     pub fn new(meta: CommonMetricData) -> Self {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let meta = uniffi::FfiConverter::<crate::UniFfiTag>::lower(meta);
             let mut call_status = uniffi::RustCallStatus::default();
@@ -1648,8 +1875,10 @@ impl ObjectMetric {
             meta.destroy();
             Self { handle }
         }
+        #[cfg(feature = "noop")] Self { handle: 0 }
     }
     pub fn set_string(&self, object: String) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let object = uniffi::FfiConverter::<crate::UniFfiTag>::lower(object);
@@ -1663,8 +1892,10 @@ impl ObjectMetric {
             object.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_value(&self, ping_name: Option<String>) -> Option<JsonValue> {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let ping_name = uniffi::FfiConverter::<crate::UniFfiTag>::lower(ping_name);
@@ -1678,8 +1909,10 @@ impl ObjectMetric {
             ping_name.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let error = uniffi::FfiConverter::<crate::UniFfiTag>::lower(error);
@@ -1693,8 +1926,10 @@ impl ObjectMetric {
             error.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn record_schema_error(&self) -> () {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let mut call_status = uniffi::RustCallStatus::default();
@@ -1705,14 +1940,17 @@ impl ObjectMetric {
             );
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
 }
 #[derive(uniffi::Record)]
+#[cfg_attr(feature = "noop", derive(Default))]
 pub struct DualLabeledCounterMetric {
     handle: u64,
 }
 impl DualLabeledCounterMetric {
     unsafe fn clone_handle(&self) -> u64 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let mut call_status = uniffi::RustCallStatus::default();
             (crate::GLEAN
@@ -1721,6 +1959,7 @@ impl DualLabeledCounterMetric {
                 &mut call_status,
             )
         }
+        #[cfg(feature = "noop")] { 0 }
     }
 }
 impl DualLabeledCounterMetric {
@@ -1729,6 +1968,7 @@ impl DualLabeledCounterMetric {
         keys: Option<Vec<CowString>>,
         categories: Option<Vec<CowString>>,
     ) -> Self {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let meta = uniffi::FfiConverter::<crate::UniFfiTag>::lower(meta);
             let keys = uniffi::FfiConverter::<crate::UniFfiTag>::lower(keys);
@@ -1746,8 +1986,10 @@ impl DualLabeledCounterMetric {
             meta.destroy();
             Self { handle }
         }
+        #[cfg(feature = "noop")] Self { handle: 0 }
     }
     pub fn get(&self, key: String, category: String) -> CounterMetric {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let key = uniffi::FfiConverter::<crate::UniFfiTag>::lower(key);
@@ -1764,6 +2006,7 @@ impl DualLabeledCounterMetric {
             key.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_value(
         &self,
@@ -1771,6 +2014,7 @@ impl DualLabeledCounterMetric {
     ) -> Option<
         ::std::collections::HashMap<String, ::std::collections::HashMap<String, i32>>,
     > {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let ping_name = uniffi::FfiConverter::<crate::UniFfiTag>::lower(ping_name);
@@ -1784,8 +2028,10 @@ impl DualLabeledCounterMetric {
             ping_name.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
     pub fn test_get_num_recorded_errors(&self, error: ErrorType) -> i32 {
+        #[cfg(not(feature = "noop"))]
         unsafe {
             let this = self.clone_handle();
             let error = uniffi::FfiConverter::<crate::UniFfiTag>::lower(error);
@@ -1799,8 +2045,10 @@ impl DualLabeledCounterMetric {
             error.destroy();
             crate::util::LocalTryLift::try_lift(res).unwrap()
         }
+        #[cfg(feature = "noop")] Default::default()
     }
 }
+#[cfg(not(feature = "noop"))]
 library_binding! {
     fn ffi_glean_core_rustbuffer_from_bytes(bytes : ::uniffi::ForeignBytes, call_status :
     & mut ::uniffi::RustCallStatus) -> ::uniffi::RustBuffer; fn
diff --git a/glean-core/glean-sym/src/types.rs b/glean-core/glean-sym/src/types.rs
index 2a57471777..2d1ff1a9eb 100644
--- a/glean-core/glean-sym/src/types.rs
+++ b/glean-core/glean-sym/src/types.rs
@@ -85,6 +85,7 @@ pub struct DistributionData {
 }
 
 #[derive(uniffi::Record)]
+#[cfg_attr(feature = "noop", derive(Default))]
 pub struct TimerId {
     id: u64,
 }
@@ -207,10 +208,15 @@ impl<K: ExtraKeys> EventMetric<K> {
     }
 }
 
+#[cfg(feature = "noop")]
+pub struct PingType;
+
+#[cfg(not(feature = "noop"))]
 pub struct PingType {
     inner: crate::metrics::PingType,
 }
 
+#[cfg(not(feature = "noop"))]
 impl PingType {
     /// Creates a new ping type.
     ///
@@ -264,3 +270,41 @@ impl PingType {
         self.inner.set_enabled(enabled)
     }
 }
+
+#[cfg(feature = "noop")]
+impl PingType {
+    /// Creates a new ping type.
+    ///
+    /// # Arguments
+    ///
+    /// * `name` - The name of the ping.
+    /// * `include_client_id` - Whether to include the client ID in the assembled ping when.
+    /// * `send_if_empty` - Whether the ping should be sent empty or not.
+    /// * `precise_timestamps` - Whether the ping should use precise timestamps for the start and end time.
+    /// * `include_info_sections` - Whether the ping should include the client/ping_info sections.
+    /// * `enabled` - Whether or not this ping is enabled. Note: Data that would be sent on a disabled
+    ///   ping will still be collected and is discarded instead of being submitted.
+    /// * `schedules_pings` - A list of pings which are triggered for submission when this ping is
+    ///   submitted.
+    /// * `reason_codes` - The valid reason codes for this ping.
+    /// * `uploader_capabilities` - The capabilities required during this ping's upload.
+    #[allow(clippy::too_many_arguments)]
+    pub fn new<A: Into<String>>(
+        _name: A,
+        _include_client_id: bool,
+        _send_if_empty: bool,
+        _precise_timestamps: bool,
+        _include_info_sections: bool,
+        _enabled: bool,
+        _schedules_pings: Vec<String>,
+        _reason_codes: Vec<String>,
+        _follows_collection_enabled: bool,
+        _uploader_capabilities: Vec<String>,
+    ) -> Self {
+        Self
+    }
+
+    pub fn submit(&self, _reason: Option<&str>) {}
+
+    pub fn set_enabled(&self, _enabled: bool) {}
+}
diff --git a/samples/glean-sym-test/Makefile b/samples/glean-sym-test/Makefile
index 7a7083f2f4..9c471b097e 100644
--- a/samples/glean-sym-test/Makefile
+++ b/samples/glean-sym-test/Makefile
@@ -16,3 +16,8 @@ help:
 run:  ## Run the sample app
 	cargo build --locked
 	env $(LIB_PATH_NAME)=target/debug RUST_LOG=uv=error,debug uv run pytest --capture=no app.py
+
+.PHONY: run-noop
+run-noop:  ## Run the sample app, but with glean-sym in noop mode
+	cargo build --locked --features noop
+	env GLEAN_NOOP=1 $(LIB_PATH_NAME)=target/debug RUST_LOG=uv=error,debug uv run pytest --capture=no app.py
diff --git a/samples/glean-sym-test/app.py b/samples/glean-sym-test/app.py
index c4d06ba38f..47b2d2d7e9 100644
--- a/samples/glean-sym-test/app.py
+++ b/samples/glean-sym-test/app.py
@@ -19,22 +19,28 @@ def check_ping_data(ping_type, sent_ping, amount):
     end_first_object = data.find("}")
     payload = json.loads(data[end_first_object + 1 :])
     counter = payload["metrics"]["counter"]
-    events = payload["events"]
 
     if ping_type == "prototype":
         assert 1 == counter["test.metrics.sample_counter"]
 
-    assert amount == counter["dylib.counting"]
+    if "GLEAN_NOOP" in os.environ:
+        assert "dylib.counting" not in counter
+    else:
+        assert amount == counter["dylib.counting"]
 
-    assert 2 == len(events)
+    if "GLEAN_NOOP" in os.environ:
+        assert "events" not in payload
+    else:
+        events = payload["events"]
+        assert 2 == len(events)
 
-    no_extra = events[0]
-    assert "event" == no_extra["name"]
+        no_extra = events[0]
+        assert "event" == no_extra["name"]
 
-    with_extra = events[1]
-    assert "event_with_extras" == with_extra["name"]
-    extras = with_extra["extra"]
-    assert "true", extras["is_set"]
+        with_extra = events[1]
+        assert "event_with_extras" == with_extra["name"]
+        extras = with_extra["extra"]
+        assert "true", extras["is_set"]
 
 def test_run():
     xul = cdll.LoadLibrary(library_name("xul"))
@@ -59,13 +65,18 @@ def test_run():
         # * Both pings contain some data
         path = os.path.join(data_path, "sent_pings")
         for root, dirs, files in os.walk(path):
-            assert len(files) == 2
+            if "GLEAN_NOOP" in os.environ:
+                assert len(files) == 1
+            else:
+                assert len(files) == 2
+
             files = sorted(files)
 
             assert "prototype-" in files[0]
             sent_ping = os.path.join(path, files[0])
             check_ping_data("prototype", sent_ping, amount)
 
-            assert "services-info-" in files[1]
-            sent_ping = os.path.join(path, files[1])
-            check_ping_data("services-info", sent_ping, amount)
+            if "GLEAN_NOOP" not in os.environ:
+                assert "services-info-" in files[1]
+                sent_ping = os.path.join(path, files[1])
+                check_ping_data("services-info", sent_ping, amount)
diff --git a/samples/glean-sym-test/services/Cargo.toml b/samples/glean-sym-test/services/Cargo.toml
index 7817e5589e..45fac21382 100644
--- a/samples/glean-sym-test/services/Cargo.toml
+++ b/samples/glean-sym-test/services/Cargo.toml
@@ -18,3 +18,7 @@ glean-build = { path = "../../../glean-core/build" }
 name = "services"
 path = "lib.rs"
 crate-type = ["cdylib"]
+
+[features]
+# Activate glean-noop and avoid test methods
+noop = ["glean-sym/noop"]
diff --git a/samples/glean-sym-test/services/lib.rs b/samples/glean-sym-test/services/lib.rs
index c8c14f66cb..997b044408 100644
--- a/samples/glean-sym-test/services/lib.rs
+++ b/samples/glean-sym-test/services/lib.rs
@@ -28,10 +28,14 @@ unsafe extern "C" fn record(amount: i32) {
     log::info!("Metric recorded.");
 
     glean_metrics::dylib::data.set(String::from("value"));
-    // `StringMetric#test_get_value` returns a string, which is passed through a `RustBuffer`,
-    // which needs to be copied and freed correctly.
-    let stored = glean_metrics::dylib::data.test_get_value(None).unwrap();
-    assert_eq!("value", stored);
+
+    #[cfg(not(feature = "noop"))]
+    {
+        // `StringMetric#test_get_value` returns a string, which is passed through a `RustBuffer`,
+        // which needs to be copied and freed correctly.
+        let stored = glean_metrics::dylib::data.test_get_value(None).unwrap();
+        assert_eq!("value", stored);
+    }
 
     glean_metrics::dylib::event.record(None);
     let extra = glean_metrics::dylib::EventWithExtrasExtra { is_set: Some(true) };
diff --git a/tools/glean-sym-parser/src/lib.rs b/tools/glean-sym-parser/src/lib.rs
index f40c90b503..99a3bf107f 100755
--- a/tools/glean-sym-parser/src/lib.rs
+++ b/tools/glean-sym-parser/src/lib.rs
@@ -29,6 +29,7 @@ const PREAMBLE: &str = r#"// DO NOT MODIFY!
 #![cfg_attr(rustfmt, rustfmt_skip)]
 
 use crate::types::*;
+#[cfg(not(feature = "noop"))]
 use crate::util::*;
 "#;
 
@@ -97,16 +98,20 @@ pub fn generate(content: &str) -> String {
         };
         tokens.push(quote! {
             #[derive(uniffi::Record)]
+            #[cfg_attr(feature = "noop", derive(Default))]
             #visibility struct #ident {
                 handle: u64
             }
 
             impl #ident {
                 unsafe fn clone_handle(&self) -> u64 {
+                    #[cfg(not(feature = "noop"))]
                     unsafe {
                         let mut call_status = uniffi::RustCallStatus::default();
                         (crate::GLEAN.#extern_fn_ident)(self.handle, &mut call_status)
                     }
+                    #[cfg(feature = "noop")]
+                    { 0 }
                 }
             }
         });
@@ -125,6 +130,7 @@ pub fn generate(content: &str) -> String {
                     let (arg_names, fn_args, extern_fn_args, destroys) = all_args.consume();
                     fns.push(quote! {
                         pub fn new(#(#fn_args,)*) -> Self {
+                            #[cfg(not(feature = "noop"))]
                             unsafe {
                                 #(
                                     let #arg_names = uniffi::FfiConverter::<crate::UniFfiTag>::lower(#arg_names);
@@ -136,6 +142,8 @@ pub fn generate(content: &str) -> String {
                                 )*
                                 Self { handle }
                             }
+                            #[cfg(feature = "noop")]
+                            Self { handle: 0 }
                         }
                     });
                     bindings.push(quote! {
@@ -157,6 +165,7 @@ pub fn generate(content: &str) -> String {
 
                     fns.push(quote! {
                         pub fn #fn_ident(&self, #(#fn_args),*) #ret_type {
+                            #[cfg(not(feature = "noop"))]
                             unsafe {
                                 let this = self.clone_handle();
                                 #(
@@ -169,6 +178,8 @@ pub fn generate(content: &str) -> String {
                                 )*
                                 crate::util::LocalTryLift::try_lift(res).unwrap()
                             }
+                            #[cfg(feature = "noop")]
+                            Default::default()
                         }
                     });
                     bindings.push(quote! {
@@ -187,6 +198,7 @@ pub fn generate(content: &str) -> String {
     }
 
     tokens.push(quote! {
+        #[cfg(not(feature = "noop"))]
         library_binding! {
             fn ffi_glean_core_rustbuffer_from_bytes(bytes: ::uniffi::ForeignBytes, call_status: &mut ::uniffi::RustCallStatus) -> ::uniffi::RustBuffer;
             fn ffi_glean_core_uniffi_contract_version() -> u32;