diff --git a/sims/main.py b/sims/main.py
index 2e6f43a..4268daa 100644
--- a/sims/main.py
+++ b/sims/main.py
@@ -35,6 +35,7 @@ from .modules.vinyl import VinylButton
 from .services.org import OrgService
 from .config import CALENDAR, NOTIFICATIONS, ORG, POWER, SCREENREC, STYLIX, VINYL
 from .services.fenster import get_i3_connection
+from .services.capture import get_capture_service
 from .services.notification_history import NotificationHistoryService
 from .services.screenrec import ScreenrecService
 
@@ -43,6 +44,9 @@ from fabric.notifications import Notifications
 
 tray = SystemTray(name="system-tray", spacing=4)
 get_i3_connection()
+# Subscribe before the main loop runs so fenster's replayed capture state
+# (sent right after SUBSCRIBE) is not missed.
+get_capture_service()
 
 dummy = Window(visible=False)
 finder = FuzzyWindowFinder()
@@ -239,7 +243,7 @@ def spawn_bars():
             display=output_name,
             tray=tray if i == 0 else None,
             monitor=i,
-            screenrec_service=screenrec_service if i == 0 else None,
+            screenrec_service=screenrec_service,
             control_center=control_center if i == 0 else None,
             org_service=org_service,
             org_dropdown=org_dropdown if i == 0 else None,
diff --git a/sims/modules/bar.py b/sims/modules/bar.py
index c2362da..f666a29 100644
--- a/sims/modules/bar.py
+++ b/sims/modules/bar.py
@@ -10,7 +10,7 @@ from sims.modules.control_center import ControlCenter
 from sims.modules.notmuch import NotmuchWidget
 from sims.modules.buddy import Buddy
 from sims.modules.org import OrgDropdown, OrgWidget
-from sims.modules.screenrec import ScreenrecWidget
+from sims.modules.capture import CaptureWidget
 from sims.modules.microphone import MicrophoneWidget
 from fabric.widgets.wayland import WaylandWindow as Window
 from fabric.system_tray.widgets import SystemTray
@@ -103,9 +103,7 @@ class StatusBar(Window):
             notmuch_service = self.notmuch.service if self.notmuch is not None else None
             self.buddy = Buddy(notmuch_service=notmuch_service)
 
-        self.screenrec = None
-        if screenrec_service is not None:
-            self.screenrec = ScreenrecWidget(screenrec_service)
+        self.capture = CaptureWidget(screenrec_service=screenrec_service)
 
         self.org = None
         if org_service is not None:
@@ -135,8 +133,7 @@ class StatusBar(Window):
         if self.notmuch:
             end_container_children.append(self.notmuch)
 
-        if self.screenrec:
-            end_container_children.append(self.screenrec)
+        end_container_children.append(self.capture)
 
         end_container_children.append(self.date_time)
 
diff --git a/sims/modules/capture.py b/sims/modules/capture.py
new file mode 100644
index 0000000..8e8d100
--- /dev/null
+++ b/sims/modules/capture.py
@@ -0,0 +1,92 @@
+"""Screen-share indicator.
+
+Minimal by default: a single red dot, visible only while fenster reports an
+active screen capture (portal screen shares, wl-screenrec, ...). Hovering
+slides out a short summary of what is being captured; the tooltip lists every
+captured output/window. Clicking stops a running sims screen recording.
+"""
+from fabric.widgets.box import Box
+from fabric.widgets.button import Button
+from fabric.widgets.label import Label
+from fabric.widgets.revealer import Revealer
+
+from sims.services.capture import CaptureService, get_capture_service
+from sims.services.screenrec import ScreenrecService
+
+SUMMARY_MAX_CHARS = 40
+
+
+def _window_label(window: dict) -> str:
+    return window.get("app_id") or window.get("title") or f"window {window.get('id')}"
+
+
+def _sessions_suffix(entry: dict) -> str:
+    sessions = entry.get("sessions", 1)
+    return f" ({sessions}×)" if isinstance(sessions, int) and sessions > 1 else ""
+
+
+class CaptureWidget(Button):
+    def __init__(
+        self,
+        service: CaptureService | None = None,
+        screenrec_service: ScreenrecService | None = None,
+        **kwargs,
+    ):
+        self._service = service or get_capture_service()
+        self._screenrec = screenrec_service
+
+        self._dot = Label(name="capture-dot", label="●")
+        self._summary = Label(name="capture-summary", label="")
+        self._revealer = Revealer(
+            child=self._summary,
+            transition_type="slide-left",
+            transition_duration=200,
+        )
+
+        super().__init__(
+            name="capture-widget",
+            child=Box(orientation="h", children=[self._revealer, self._dot]),
+            on_clicked=self._on_clicked,
+            visible=False,
+            **kwargs,
+        )
+        self.set_no_show_all(True)
+
+        self.connect("enter-notify-event", lambda *_: self._revealer.reveal())
+        self.connect("leave-notify-event", lambda *_: self._revealer.unreveal())
+
+        self._service.connect("capture-changed", self._update)
+        if self._screenrec is not None:
+            self._screenrec.connect("recording-changed", self._update)
+        self._update()
+
+    def _on_clicked(self, *_):
+        if self._screenrec is not None and self._screenrec.recording:
+            self._screenrec.stop()
+
+    def _update(self, *_):
+        outputs = self._service.outputs
+        windows = self._service.windows
+
+        if not (outputs or windows):
+            self._revealer.unreveal()
+            self.set_visible(False)
+            return
+
+        names = [o.get("name", "?") for o in outputs] + [_window_label(w) for w in windows]
+        summary = "Sharing " + ", ".join(names)
+        if len(summary) > SUMMARY_MAX_CHARS:
+            summary = summary[: SUMMARY_MAX_CHARS - 1] + "…"
+        self._summary.set_label(summary)
+
+        lines = [f"Monitor {o.get('name', '?')}{_sessions_suffix(o)}" for o in outputs]
+        for w in windows:
+            title = w.get("title")
+            label = _window_label(w)
+            detail = f"{label} — {title}" if title and title != label else label
+            lines.append(f"Window {detail}{_sessions_suffix(w)}")
+        if self._screenrec is not None and self._screenrec.recording:
+            lines.append("Click to stop recording")
+        self.set_tooltip_text("\n".join(lines))
+
+        self.set_visible(True)
diff --git a/sims/modules/screenrec.py b/sims/modules/screenrec.py
deleted file mode 100644
index 24eedea..0000000
--- a/sims/modules/screenrec.py
+++ /dev/null
@@ -1,59 +0,0 @@
-import time
-
-from fabric.utils import invoke_repeater
-from fabric.widgets.box import Box
-from fabric.widgets.button import Button
-from fabric.widgets.label import Label
-from gi.repository import GLib
-
-from sims.services.screenrec import ScreenrecService
-
-
-class ScreenrecWidget(Button):
-    def __init__(self, service: ScreenrecService, **kwargs):
-        self._service = service
-        self._timer_id: int | None = None
-
-        self._dot = Label(name="screenrec-dot", label="●")
-        self._elapsed = Label(name="screenrec-elapsed", label="00:00")
-
-        super().__init__(
-            name="screenrec-widget",
-            child=Box(
-                orientation="h",
-                spacing=6,
-                children=[self._dot, self._elapsed],
-            ),
-            on_clicked=lambda *_: self._service.stop(),
-            visible=False,
-            **kwargs,
-        )
-        self.set_no_show_all(True)
-
-        self._service.connect("recording-changed", self._on_recording_changed)
-        if self._service.recording:
-            self._on_recording_changed(self._service, True)
-
-    def _on_recording_changed(self, _service, recording: bool):
-        if recording:
-            self._update_elapsed()
-            self.set_visible(True)
-            if self._timer_id is None:
-                self._timer_id = invoke_repeater(1000, self._update_elapsed)
-        else:
-            self.set_visible(False)
-            if self._timer_id is not None:
-                try:
-                    GLib.source_remove(self._timer_id)
-                except Exception:
-                    pass
-                self._timer_id = None
-
-    def _update_elapsed(self) -> bool:
-        started = self._service.started_at
-        if started is None:
-            self._elapsed.set_text("00:00")
-            return True
-        secs = int(time.monotonic() - started)
-        self._elapsed.set_text(f"{secs // 60:02d}:{secs % 60:02d}")
-        return True
diff --git a/sims/services/capture.py b/sims/services/capture.py
new file mode 100644
index 0000000..d2eca93
--- /dev/null
+++ b/sims/services/capture.py
@@ -0,0 +1,68 @@
+"""Screen-capture IPC subscriber.
+
+Listens to fenster's `:capture` event, which is backed by riverfx's
+`capture_sessions` events (river-window-management-v1 v5+). Fenster sends the
+full aggregate on every change and replays it on subscribe:
+
+    {
+      "change": "active" | "inactive",
+      "outputs": [{"name": "DP-1", "sessions": 1}],
+      "windows": [{"id": 42, "app_id": "firefox", "title": "...", "sessions": 1}]
+    }
+
+Create the singleton before the GLib main loop starts so the replayed initial
+state is not missed.
+"""
+from fabric.core.service import Service, Signal
+from loguru import logger
+
+from sims.services.fenster import get_i3_connection
+
+_service: "CaptureService | None" = None
+
+
+class CaptureService(Service):
+    @Signal
+    def capture_changed(self) -> None:
+        """Emitted when the set of captured outputs/windows changes."""
+
+    def __init__(self, **kwargs):
+        super().__init__(**kwargs)
+        self._outputs: list[dict] = []
+        self._windows: list[dict] = []
+        i3 = get_i3_connection()
+        i3.connect("event::capture::active", self._on_event)
+        i3.connect("event::capture::inactive", self._on_event)
+
+    @property
+    def active(self) -> bool:
+        return bool(self._outputs or self._windows)
+
+    @property
+    def outputs(self) -> list[dict]:
+        """Captured outputs: [{"name": str, "sessions": int}]."""
+        return list(self._outputs)
+
+    @property
+    def windows(self) -> list[dict]:
+        """Captured windows: [{"id", "app_id", "title", "sessions"}]."""
+        return list(self._windows)
+
+    def _on_event(self, _i3, event):
+        outputs = event.data.get("outputs")
+        windows = event.data.get("windows")
+        if not isinstance(outputs, list) or not isinstance(windows, list):
+            logger.warning(f"[Capture] unexpected event payload: {event.data!r}")
+            return
+        if outputs == self._outputs and windows == self._windows:
+            return
+        self._outputs = outputs
+        self._windows = windows
+        self.capture_changed()
+
+
+def get_capture_service() -> CaptureService:
+    global _service
+    if _service is None:
+        _service = CaptureService()
+    return _service
diff --git a/sims/services/i3.py b/sims/services/i3.py
index 69e4c66..fa31dbc 100644
--- a/sims/services/i3.py
+++ b/sims/services/i3.py
@@ -71,6 +71,7 @@ class I3MessageType(IntEnum):
     INPUT_EVENT = 0x80000015
     # fenster extensions (event id 100+)
     SMART_CORNERS_EVENT = 0x80000064
+    CAPTURE_EVENT = 0x80000065
 
 
 @dataclass(frozen=True)
diff --git a/sims/styles/bar.css b/sims/styles/bar.css
index d7601b4..352edfd 100644
--- a/sims/styles/bar.css
+++ b/sims/styles/bar.css
@@ -127,7 +127,7 @@
     color: var(--blue);
 }
 
-#screenrec-widget {
+#capture-widget {
     background: transparent;
     border: none;
     padding: 0 6px;
@@ -135,14 +135,14 @@
     box-shadow: none;
 }
 
-#screenrec-dot {
-    color: #ff4444;
+#capture-dot {
+    color: var(--red);
     font-size: 14px;
 }
 
-#screenrec-elapsed {
+#capture-summary {
     font-size: 12px;
-    font-family: monospace;
+    margin-right: 6px;
 }
 
 tooltip {