diff --git a/crates/perry-api-manifest/src/entries.rs b/crates/perry-api-manifest/src/entries.rs
index f3d558a9d..3d43c8c47 100644
--- a/crates/perry-api-manifest/src/entries.rs
+++ b/crates/perry-api-manifest/src/entries.rs
@@ -2087,6 +2087,11 @@ pub static API_MANIFEST: &[ApiEntry] = &[
     method("perry/system", "isDarkMode", false, None),
     method("perry/system", "getDeviceIdiom", false, None),
     method("perry/system", "getDeviceModel", false, None),
+    // Bug-report-flow utility: stable OS-version string per
+    // platform (e.g. `"15.2"`, `"macOS 14.5"`, `"Android 14"`).
+    // Common need for crash reports and telemetry; pairs with
+    // getDeviceModel / getAppVersion.
+    method("perry/system", "getOSVersion", false, None),
     method("perry/system", "getLocale", false, None),
     method("perry/system", "getAppVersion", false, None),
     method("perry/system", "getAppBuildNumber", false, None),
diff --git a/crates/perry-dispatch/src/lib.rs b/crates/perry-dispatch/src/lib.rs
index 3109b54f3..a85be1e92 100644
--- a/crates/perry-dispatch/src/lib.rs
+++ b/crates/perry-dispatch/src/lib.rs
@@ -2204,6 +2204,16 @@ pub static PERRY_SYSTEM_TABLE: &[MethodRow] = &[
         args: &[],
         ret: ReturnKind::F64,
     },
+    // Bug-report-flow utility: stable OS-version string per
+    // platform. Returns a NaN-boxed JS string the user can splice
+    // into crash reports / telemetry. Same dispatch shape as
+    // getDeviceModel.
+    MethodRow {
+        method: "getOSVersion",
+        runtime: "perry_system_get_os_version",
+        args: &[],
+        ret: ReturnKind::F64,
+    },
     MethodRow {
         method: "audioSetOutputFilename",
         runtime: "perry_system_audio_set_output_filename",
diff --git a/crates/perry-ui-android/src/lib.rs b/crates/perry-ui-android/src/lib.rs
index 60da71f8e..cfbdeb138 100644
--- a/crates/perry-ui-android/src/lib.rs
+++ b/crates/perry-ui-android/src/lib.rs
@@ -2169,6 +2169,20 @@ pub extern "C" fn perry_system_audio_get_waveform(count: f64) -> f64 {
 pub extern "C" fn perry_system_get_device_model() -> i64 {
     audio::get_device_model()
 }
+/// Bug-report-flow utility: stable OS-version string. Android stub —
+/// native impl will read `Build.VERSION.RELEASE` via JNI.
+#[no_mangle]
+pub extern "C" fn perry_system_get_os_version() -> i64 {
+    perry_runtime::stub_diag::perry_stub_warn(
+        "perry_system_get_os_version",
+        "Android getOSVersion (Build.VERSION.RELEASE) not yet implemented",
+        None,
+    );
+    extern "C" {
+        fn js_string_from_bytes(ptr: *const u8, len: i32) -> i64;
+    }
+    unsafe { js_string_from_bytes(std::ptr::null(), 0) }
+}
 #[no_mangle]
 pub extern "C" fn perry_system_audio_set_output_filename(filename_ptr: i64) {
     fn str_from_header(ptr: *const u8) -> &'static str {
diff --git a/crates/perry-ui-gtk4/src/lib.rs b/crates/perry-ui-gtk4/src/lib.rs
index 88aa94f99..57fc80a82 100644
--- a/crates/perry-ui-gtk4/src/lib.rs
+++ b/crates/perry-ui-gtk4/src/lib.rs
@@ -1949,6 +1949,21 @@ pub extern "C" fn perry_system_audio_get_waveform(count: f64) -> f64 {
 pub extern "C" fn perry_system_get_device_model() -> i64 {
     audio::get_device_model()
 }
+/// Bug-report-flow utility: stable OS-version string. GTK4/Linux
+/// stub — native impl would read `/etc/os-release` or
+/// `uname -r`.
+#[no_mangle]
+pub extern "C" fn perry_system_get_os_version() -> i64 {
+    perry_runtime::stub_diag::perry_stub_warn(
+        "perry_system_get_os_version",
+        "Linux getOSVersion (/etc/os-release) not yet implemented",
+        None,
+    );
+    extern "C" {
+        fn js_string_from_bytes(ptr: *const u8, len: i32) -> i64;
+    }
+    unsafe { js_string_from_bytes(std::ptr::null(), 0) }
+}
 #[no_mangle]
 pub extern "C" fn perry_system_audio_set_output_filename(filename_ptr: i64) {
     fn str_from_header(ptr: *const u8) -> &'static str {
diff --git a/crates/perry-ui-ios/src/lib.rs b/crates/perry-ui-ios/src/lib.rs
index 30644fd91..5e90ccecd 100644
--- a/crates/perry-ui-ios/src/lib.rs
+++ b/crates/perry-ui-ios/src/lib.rs
@@ -1541,6 +1541,20 @@ pub extern "C" fn perry_system_audio_get_waveform(count: f64) -> f64 {
 pub extern "C" fn perry_system_get_device_model() -> i64 {
     audio::get_device_model()
 }
+/// Bug-report-flow utility: stable OS-version string. MVP stub on
+/// iOS; native impl will use `[[UIDevice currentDevice] systemVersion]`.
+#[no_mangle]
+pub extern "C" fn perry_system_get_os_version() -> i64 {
+    perry_runtime::stub_diag::perry_stub_warn(
+        "perry_system_get_os_version",
+        "iOS getOSVersion not yet implemented (UIDevice.systemVersion follow-up)",
+        Some("#918"),
+    );
+    extern "C" {
+        fn js_string_from_bytes(ptr: *const u8, len: i32) -> i64;
+    }
+    unsafe { js_string_from_bytes(std::ptr::null(), 0) }
+}
 #[no_mangle]
 pub extern "C" fn perry_system_audio_set_output_filename(filename_ptr: i64) {
     fn str_from_header(ptr: *const u8) -> &'static str {
diff --git a/crates/perry-ui-macos/src/lib.rs b/crates/perry-ui-macos/src/lib.rs
index 9330238f9..2d5772e32 100644
--- a/crates/perry-ui-macos/src/lib.rs
+++ b/crates/perry-ui-macos/src/lib.rs
@@ -2157,6 +2157,39 @@ pub extern "C" fn perry_system_get_device_model() -> i64 {
     audio::get_device_model()
 }
 
+/// Bug-report-flow utility: stable OS-version string. Uses
+/// `[[NSProcessInfo processInfo] operatingSystemVersionString]`
+/// which returns a human-readable form like `"Version 14.5
+/// (Build 23F79)"` — preserved as-is so triage can grep the build
+/// number too. Returned as a Perry-managed string.
+#[no_mangle]
+pub extern "C" fn perry_system_get_os_version() -> i64 {
+    extern "C" {
+        fn js_string_from_bytes(ptr: *const u8, len: i32) -> i64;
+    }
+    unsafe {
+        let cls = objc2::runtime::AnyClass::get(c"NSProcessInfo").unwrap();
+        let info: *mut objc2::runtime::AnyObject = objc2::msg_send![cls, processInfo];
+        if info.is_null() {
+            return js_string_from_bytes(std::ptr::null(), 0);
+        }
+        let s: *mut objc2::runtime::AnyObject =
+            objc2::msg_send![info, operatingSystemVersionString];
+        if s.is_null() {
+            return js_string_from_bytes(std::ptr::null(), 0);
+        }
+        let utf8_ptr: *const u8 = objc2::msg_send![s, UTF8String];
+        if utf8_ptr.is_null() {
+            return js_string_from_bytes(std::ptr::null(), 0);
+        }
+        let utf8_len: usize = objc2::msg_send![s, lengthOfBytesUsingEncoding: 4u64];
+        if utf8_len == 0 {
+            return js_string_from_bytes(std::ptr::null(), 0);
+        }
+        js_string_from_bytes(utf8_ptr, utf8_len as i32)
+    }
+}
+
 /// Set output filename for audio recording.
 #[no_mangle]
 pub extern "C" fn perry_system_audio_set_output_filename(filename_ptr: i64) {
diff --git a/crates/perry-ui-test/src/lib.rs b/crates/perry-ui-test/src/lib.rs
index c66e8465c..d1519165d 100644
--- a/crates/perry-ui-test/src/lib.rs
+++ b/crates/perry-ui-test/src/lib.rs
@@ -1463,6 +1463,20 @@ pub const FEATURES: &[Feature] = &[
         web: S,
         web_name: None,
     },
+    // Bug-report-flow utility: stable OS-version string. macOS has
+    // the real impl via NSProcessInfo; every other platform is a
+    // first-call-warning stub awaiting its native implementation.
+    Feature {
+        name: "perry_system_get_os_version",
+        category: SystemApi,
+        macos: S,
+        ios: S,
+        android: S,
+        gtk4: S,
+        windows: S,
+        web: S,
+        web_name: None,
+    },
     Feature {
         name: "perry_system_preferences_set",
         category: SystemApi,
diff --git a/crates/perry-ui-tvos/src/lib.rs b/crates/perry-ui-tvos/src/lib.rs
index 212c6bf69..98be0c151 100644
--- a/crates/perry-ui-tvos/src/lib.rs
+++ b/crates/perry-ui-tvos/src/lib.rs
@@ -1327,6 +1327,21 @@ pub extern "C" fn perry_system_audio_get_waveform(count: f64) -> f64 {
 pub extern "C" fn perry_system_get_device_model() -> i64 {
     audio::get_device_model()
 }
+/// Bug-report-flow utility: stable OS-version string. tvOS stub —
+/// native impl can mirror iOS's `[[UIDevice currentDevice] systemVersion]`
+/// (UIDevice is available on tvOS).
+#[no_mangle]
+pub extern "C" fn perry_system_get_os_version() -> i64 {
+    perry_runtime::stub_diag::perry_stub_warn(
+        "perry_system_get_os_version",
+        "tvOS getOSVersion not yet implemented",
+        None,
+    );
+    extern "C" {
+        fn js_string_from_bytes(ptr: *const u8, len: i32) -> i64;
+    }
+    unsafe { js_string_from_bytes(std::ptr::null(), 0) }
+}
 #[no_mangle]
 pub extern "C" fn perry_system_audio_set_output_filename(filename_ptr: i64) {
     fn str_from_header(ptr: *const u8) -> &'static str {
diff --git a/crates/perry-ui-visionos/src/lib.rs b/crates/perry-ui-visionos/src/lib.rs
index 9d8fbc7e3..bdb8511f8 100644
--- a/crates/perry-ui-visionos/src/lib.rs
+++ b/crates/perry-ui-visionos/src/lib.rs
@@ -1448,6 +1448,19 @@ pub extern "C" fn perry_system_audio_get_waveform(count: f64) -> f64 {
 pub extern "C" fn perry_system_get_device_model() -> i64 {
     audio::get_device_model()
 }
+/// Bug-report-flow utility: stable OS-version string. visionOS stub.
+#[no_mangle]
+pub extern "C" fn perry_system_get_os_version() -> i64 {
+    perry_runtime::stub_diag::perry_stub_warn(
+        "perry_system_get_os_version",
+        "visionOS getOSVersion not yet implemented",
+        None,
+    );
+    extern "C" {
+        fn js_string_from_bytes(ptr: *const u8, len: i32) -> i64;
+    }
+    unsafe { js_string_from_bytes(std::ptr::null(), 0) }
+}
 #[no_mangle]
 pub extern "C" fn perry_system_audio_set_output_filename(filename_ptr: i64) {
     fn str_from_header(ptr: *const u8) -> &'static str {
diff --git a/crates/perry-ui-watchos/src/lib.rs b/crates/perry-ui-watchos/src/lib.rs
index 67edbb6b8..5bf320244 100644
--- a/crates/perry-ui-watchos/src/lib.rs
+++ b/crates/perry-ui-watchos/src/lib.rs
@@ -1200,6 +1200,19 @@ pub extern "C" fn perry_system_audio_get_waveform(_count: f64) -> f64 {
 pub extern "C" fn perry_system_get_device_model() -> i64 {
     0
 }
+/// Bug-report-flow utility: stable OS-version string. watchOS stub.
+#[no_mangle]
+pub extern "C" fn perry_system_get_os_version() -> i64 {
+    perry_runtime::stub_diag::perry_stub_warn(
+        "perry_system_get_os_version",
+        "watchOS getOSVersion not yet implemented",
+        None,
+    );
+    extern "C" {
+        fn js_string_from_bytes(ptr: *const u8, len: i32) -> i64;
+    }
+    unsafe { js_string_from_bytes(std::ptr::null(), 0) }
+}
 #[no_mangle]
 pub extern "C" fn perry_system_audio_set_output_filename(filename_ptr: i64) {
     let filename = str_from_header(filename_ptr as *const u8);
diff --git a/crates/perry-ui-windows/src/lib.rs b/crates/perry-ui-windows/src/lib.rs
index cd4d76382..21887f737 100644
--- a/crates/perry-ui-windows/src/lib.rs
+++ b/crates/perry-ui-windows/src/lib.rs
@@ -1994,6 +1994,20 @@ pub extern "C" fn perry_system_audio_get_waveform(count: f64) -> f64 {
 pub extern "C" fn perry_system_get_device_model() -> i64 {
     audio::get_device_model()
 }
+/// Bug-report-flow utility: stable OS-version string. Windows stub —
+/// native impl will use `GetVersionEx` / `RtlGetVersion`.
+#[no_mangle]
+pub extern "C" fn perry_system_get_os_version() -> i64 {
+    perry_runtime::stub_diag::perry_stub_warn(
+        "perry_system_get_os_version",
+        "Windows getOSVersion (RtlGetVersion) not yet implemented",
+        None,
+    );
+    extern "C" {
+        fn js_string_from_bytes(ptr: *const u8, len: i32) -> i64;
+    }
+    unsafe { js_string_from_bytes(std::ptr::null(), 0) }
+}
 #[no_mangle]
 pub extern "C" fn perry_system_audio_set_output_filename(filename_ptr: i64) {
     fn str_from_header(ptr: *const u8) -> &'static str {
diff --git a/docs/api/perry.d.ts b/docs/api/perry.d.ts
index d6f8e8e40..75ed849d2 100644
--- a/docs/api/perry.d.ts
+++ b/docs/api/perry.d.ts
@@ -1,6 +1,6 @@
 // Auto-generated from Perry's API manifest (#465). Do not edit by hand.
 // Source: perry-api-manifest::API_MANIFEST
-// Coverage: 900 entries across 71 modules
+// Coverage: 901 entries across 71 modules
 
 declare module "argon2" {
   /** stdlib */
@@ -736,6 +736,8 @@ declare module "perry/system" {
   /** stdlib */
   export function getLocale(...args: any[]): any;
   /** stdlib */
+  export function getOSVersion(...args: any[]): any;
+  /** stdlib */
   export function imagePickerPick(...args: any[]): any;
   /** stdlib */
   export function isDarkMode(...args: any[]): any;
diff --git a/docs/src/api/reference.md b/docs/src/api/reference.md
index 6dbc5f150..3f089f414 100644
--- a/docs/src/api/reference.md
+++ b/docs/src/api/reference.md
@@ -2,7 +2,7 @@
 
 This page is auto-generated from Perry's compile-time API manifest (`perry-api-manifest::API_MANIFEST`). It is the source of truth for what `perry compile` accepts; references to symbols not listed here produce `R005 UnimplementedApi` (issue #463). Stubs (#464) are flagged ⚠ — they link cleanly but no-op at runtime on the chosen target.
 
-Total: 900 entries across 71 modules.
+Total: 901 entries across 71 modules.
 
 ## Modules
 
@@ -922,6 +922,7 @@ Total: 900 entries across 71 modules.
 - `getDeviceIdiom` — module
 - `getDeviceModel` — module
 - `getLocale` — module
+- `getOSVersion` — module
 - `imagePickerPick` — module
 - `isDarkMode` — module
 - `keychainDelete` — module