diff --git a/codex-rs/otel/src/config.rs b/codex-rs/otel/src/config.rs
index 28365905de..a228c6581c 100644
--- a/codex-rs/otel/src/config.rs
+++ b/codex-rs/otel/src/config.rs
@@ -69,6 +69,8 @@ pub struct OtelSettings {
 #[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
 pub struct StatsigMetricsSettings {
     pub environment: String,
+    #[serde(default)]
+    pub respect_system_proxy: bool,
 }
 
 #[derive(Clone, Debug)]
@@ -109,7 +111,9 @@ pub enum OtelExporter {
 #[cfg(test)]
 mod tests {
     use super::OtelExporter;
+    use super::StatsigMetricsSettings;
     use super::resolve_exporter;
+    use pretty_assertions::assert_eq;
 
     #[test]
     fn statsig_default_metrics_exporter_is_disabled_in_debug_builds() {
@@ -119,4 +123,29 @@ mod tests {
         ));
     }
 
+    #[test]
+    fn statsig_settings_default_missing_proxy_policy_for_older_payloads() {
+        let settings: StatsigMetricsSettings =
+            serde_json::from_str(r#"{"environment":"prod"}"#).expect("legacy settings");
+
+        assert_eq!(
+            settings,
+            StatsigMetricsSettings {
+                environment: "prod".to_string(),
+                respect_system_proxy: false,
+            }
+        );
+    }
+
+    #[test]
+    fn statsig_settings_preserve_system_proxy_policy() {
+        let settings = StatsigMetricsSettings {
+            environment: "prod".to_string(),
+            respect_system_proxy: true,
+        };
+        let json = serde_json::to_string(&settings).expect("serialize settings");
+        let restored = serde_json::from_str(&json).expect("deserialize settings");
+
+        assert_eq!(settings, restored);
+    }
 }
diff --git a/codex-rs/otel/src/provider.rs b/codex-rs/otel/src/provider.rs
index 420546ba08..6ff0f6fecb 100644
--- a/codex-rs/otel/src/provider.rs
+++ b/codex-rs/otel/src/provider.rs
@@ -7,6 +7,7 @@ use crate::metrics::MetricsConfig;
 use crate::targets::is_log_export_target;
 use crate::targets::is_trace_safe_target;
 use codex_http_client::HttpClientFactory;
+use codex_http_client::OutboundProxyPolicy;
 use gethostname::gethostname;
 use opentelemetry::Context;
 use opentelemetry::KeyValue;
@@ -278,6 +279,8 @@ impl OtelProvider {
             if matches!(settings.metrics_exporter, OtelExporter::Statsig) {
                 crate::metrics::install_global_statsig_settings(StatsigMetricsSettings {
                     environment: settings.environment.clone(),
+                    respect_system_proxy: settings.http_client_factory.outbound_proxy_policy()
+                        == OutboundProxyPolicy::RespectSystemProxy,
                 });
             }
         }
@@ -614,7 +617,6 @@ mod shutdown_tests;
 #[cfg(test)]
 mod tests {
     use super::*;
-    use codex_http_client::OutboundProxyPolicy;
     use crate::metrics::API_CALL_COUNT_METRIC;
     use crate::metrics::API_CALL_DURATION_METRIC;
     use crate::metrics::MetricsExporter;
diff --git a/codex-rs/windows-sandbox-rs/src/bin/setup_main/win.rs b/codex-rs/windows-sandbox-rs/src/bin/setup_main/win.rs
index dc43abd922..d1c518a9ee 100644
--- a/codex-rs/windows-sandbox-rs/src/bin/setup_main/win.rs
+++ b/codex-rs/windows-sandbox-rs/src/bin/setup_main/win.rs
@@ -1098,6 +1098,25 @@ mod tests {
             payload.otel,
             Some(StatsigMetricsSettings {
                 environment: "prod".to_string(),
+                respect_system_proxy: false,
+            })
+        );
+    }
+
+    #[test]
+    fn payload_preserves_otel_system_proxy_policy() {
+        let mut payload = payload_json();
+        payload["otel"] = json!({
+            "environment": "prod",
+            "respect_system_proxy": true,
+        });
+        let payload: Payload = serde_json::from_value(payload).expect("payload");
+
+        assert_eq!(
+            payload.otel,
+            Some(StatsigMetricsSettings {
+                environment: "prod".to_string(),
+                respect_system_proxy: true,
             })
         );
     }
diff --git a/codex-rs/windows-sandbox-rs/src/wfp_setup.rs b/codex-rs/windows-sandbox-rs/src/wfp_setup.rs
index 3edc8e9bc9..78ceae1345 100644
--- a/codex-rs/windows-sandbox-rs/src/wfp_setup.rs
+++ b/codex-rs/windows-sandbox-rs/src/wfp_setup.rs
@@ -56,7 +56,11 @@ fn build_wfp_metrics_provider(
         exporter: OtelExporter::None,
         trace_exporter: OtelExporter::None,
         metrics_exporter: OtelExporter::Statsig,
-        http_client_factory: HttpClientFactory::new(OutboundProxyPolicy::ReqwestDefault),
+        http_client_factory: HttpClientFactory::new(if otel.respect_system_proxy {
+            OutboundProxyPolicy::RespectSystemProxy
+        } else {
+            OutboundProxyPolicy::ReqwestDefault
+        }),
         runtime_metrics: false,
         span_attributes: BTreeMap::new(),
         tracestate: BTreeMap::new(),