diff --git a/apps/macos/Sources/Clawdis/ControlChannel.swift b/apps/macos/Sources/Clawdis/ControlChannel.swift
index 8d4aa0ac1..e60ad8669 100644
--- a/apps/macos/Sources/Clawdis/ControlChannel.swift
+++ b/apps/macos/Sources/Clawdis/ControlChannel.swift
@@ -253,7 +253,13 @@ final class ControlChannel: ObservableObject {
         return try? JSONDecoder().decode(ControlHeartbeatEvent.self, from: data)
     }
 
-    private func request(method: String, params: [String: Any]? = nil, timeout: TimeInterval? = nil) async throws -> Data {
+    func sendSystemEvent(_ text: String) async throws {
+        let trimmed = text.trimmingCharacters(in: .whitespacesAndNewlines)
+        guard !trimmed.isEmpty else { return }
+        _ = try await self.request(method: "system-event", params: ["text": trimmed], timeout: 5)
+    }
+
+    func request(method: String, params: [String: Any]? = nil, timeout: TimeInterval? = nil) async throws -> Data {
         try await self.ensureConnected()
         let id = UUID().uuidString
         var frame: [String: Any] = ["type": "request", "id": id, "method": method]
diff --git a/apps/macos/Sources/Clawdis/InstancesSettings.swift b/apps/macos/Sources/Clawdis/InstancesSettings.swift
new file mode 100644
index 000000000..569206fbb
--- /dev/null
+++ b/apps/macos/Sources/Clawdis/InstancesSettings.swift
@@ -0,0 +1,80 @@
+import SwiftUI
+
+struct InstancesSettings: View {
+    @StateObject private var store = InstancesStore.shared
+
+    var body: some View {
+        VStack(alignment: .leading, spacing: 12) {
+            header
+            if let err = store.lastError {
+                Text("Error: \(err)")
+                    .foregroundStyle(.red)
+            }
+            if store.instances.isEmpty {
+                Text("No instances reported yet.")
+                    .foregroundStyle(.secondary)
+            } else {
+                List(store.instances) { inst in
+                    instanceRow(inst)
+                }
+                .listStyle(.inset)
+            }
+            Spacer()
+        }
+        .onAppear { store.start() }
+        .onDisappear { store.stop() }
+    }
+
+    private var header: some View {
+        HStack {
+            VStack(alignment: .leading, spacing: 4) {
+                Text("Connected Instances")
+                    .font(.headline)
+                Text("Latest presence beacons from Clawdis nodes. Updated periodically.")
+                    .font(.footnote)
+                    .foregroundStyle(.secondary)
+            }
+            Spacer()
+            if store.isLoading {
+                ProgressView()
+            } else {
+                Button("Refresh") { Task { await store.refresh() } }
+            }
+        }
+    }
+
+    @ViewBuilder
+    private func instanceRow(_ inst: InstanceInfo) -> some View {
+        VStack(alignment: .leading, spacing: 4) {
+            HStack(spacing: 8) {
+                Text(inst.host ?? "unknown host").font(.subheadline.bold())
+                if let ip = inst.ip { Text("(") + Text(ip).monospaced() + Text(")") }
+            }
+            HStack(spacing: 8) {
+                if let version = inst.version {
+                    label(icon: "shippingbox", text: version)
+                }
+                label(icon: "clock", text: inst.lastInputDescription)
+                if let mode = inst.mode { label(icon: "network", text: mode) }
+                if let reason = inst.reason, !reason.isEmpty {
+                    label(icon: "info.circle", text: reason)
+                }
+            }
+            Text(inst.text)
+                .font(.footnote)
+                .foregroundStyle(.secondary)
+            Text(inst.ageDescription)
+                .font(.caption)
+                .foregroundStyle(.secondary)
+        }
+        .padding(.vertical, 6)
+    }
+
+    private func label(icon: String, text: String) -> some View {
+        HStack(spacing: 4) {
+            Image(systemName: icon).foregroundStyle(.secondary).font(.caption)
+            Text(text)
+        }
+        .font(.footnote)
+    }
+}
diff --git a/apps/macos/Sources/Clawdis/InstancesStore.swift b/apps/macos/Sources/Clawdis/InstancesStore.swift
new file mode 100644
index 000000000..22832a80f
--- /dev/null
+++ b/apps/macos/Sources/Clawdis/InstancesStore.swift
@@ -0,0 +1,82 @@
+import Foundation
+import OSLog
+
+struct InstanceInfo: Identifiable, Codable {
+    let id: String
+    let host: String?
+    let ip: String?
+    let version: String?
+    let lastInputSeconds: Int?
+    let mode: String?
+    let reason: String?
+    let text: String
+    let ts: Double
+
+    var ageDescription: String {
+        let date = Date(timeIntervalSince1970: ts / 1000)
+        return age(from: date)
+    }
+
+    var lastInputDescription: String {
+        guard let secs = lastInputSeconds else { return "unknown" }
+        return "\(secs)s ago"
+    }
+}
+
+@MainActor
+final class InstancesStore: ObservableObject {
+    static let shared = InstancesStore()
+
+    @Published var instances: [InstanceInfo] = []
+    @Published var lastError: String?
+    @Published var isLoading = false
+
+    private let logger = Logger(subsystem: "com.steipete.clawdis", category: "instances")
+    private var task: Task<Void, Never>?
+    private let interval: TimeInterval = 30
+
+    func start() {
+        guard self.task == nil else { return }
+        self.task = Task.detached { [weak self] in
+            guard let self else { return }
+            await self.refresh()
+            while !Task.isCancelled {
+                try? await Task.sleep(nanoseconds: UInt64(self.interval * 1_000_000_000))
+                await self.refresh()
+            }
+        }
+    }
+
+    func stop() {
+        self.task?.cancel()
+        self.task = nil
+    }
+
+    func refresh() async {
+        if self.isLoading { return }
+        self.isLoading = true
+        defer { self.isLoading = false }
+        do {
+            let data = try await ControlChannel.shared.request(method: "system-presence")
+            let decoded = try JSONDecoder().decode([InstanceInfo].self, from: data)
+            let withIDs = decoded.map { entry -> InstanceInfo in
+                let key = entry.host ?? entry.ip ?? entry.text
+                return InstanceInfo(
+                    id: key,
+                    host: entry.host,
+                    ip: entry.ip,
+                    version: entry.version,
+                    lastInputSeconds: entry.lastInputSeconds,
+                    mode: entry.mode,
+                    reason: entry.reason,
+                    text: entry.text,
+                    ts: entry.ts)
+            }
+            self.instances = withIDs
+            self.lastError = nil
+        } catch {
+            self.logger.error("instances fetch failed: \(error.localizedDescription, privacy: .public)")
+            self.lastError = error.localizedDescription
+        }
+    }
+}
diff --git a/apps/macos/Sources/Clawdis/MenuBar.swift b/apps/macos/Sources/Clawdis/MenuBar.swift
index 366d45eed..5d536e7ff 100644
--- a/apps/macos/Sources/Clawdis/MenuBar.swift
+++ b/apps/macos/Sources/Clawdis/MenuBar.swift
@@ -95,6 +95,7 @@ final class AppDelegate: NSObject, NSApplicationDelegate, NSXPCListenerDelegate
             try? await ControlChannel.shared.configure(mode: controlMode)
             try? await AgentRPC.shared.start()
             _ = await AgentRPC.shared.setHeartbeatsEnabled(AppStateStore.shared.heartbeatsEnabled)
+            PresenceReporter.shared.start()
         }
         Task { await HealthStore.shared.refresh(onDemand: true) }
         self.startListener()
@@ -109,6 +110,7 @@ final class AppDelegate: NSObject, NSApplicationDelegate, NSXPCListenerDelegate
 
     func applicationWillTerminate(_ notification: Notification) {
         RelayProcessManager.shared.stop()
+        PresenceReporter.shared.stop()
     }
 
     @MainActor
diff --git a/apps/macos/Sources/Clawdis/PresenceReporter.swift b/apps/macos/Sources/Clawdis/PresenceReporter.swift
new file mode 100644
index 000000000..b0041f74c
--- /dev/null
+++ b/apps/macos/Sources/Clawdis/PresenceReporter.swift
@@ -0,0 +1,95 @@
+import Cocoa
+import Darwin
+import Foundation
+import OSLog
+
+@MainActor
+final class PresenceReporter {
+    static let shared = PresenceReporter()
+
+    private let logger = Logger(subsystem: "com.steipete.clawdis", category: "presence")
+    private var task: Task<Void, Never>?
+    private let interval: TimeInterval = 180 // a few minutes
+
+    func start() {
+        guard self.task == nil else { return }
+        self.task = Task.detached { [weak self] in
+            guard let self else { return }
+            await self.push(reason: "launch")
+            while !Task.isCancelled {
+                try? await Task.sleep(nanoseconds: UInt64(self.interval * 1_000_000_000))
+                await self.push(reason: "periodic")
+            }
+        }
+    }
+
+    func stop() {
+        self.task?.cancel()
+        self.task = nil
+    }
+
+    @Sendable
+    private func push(reason: String) async {
+        let mode = await MainActor.run { AppStateStore.shared.connectionMode.rawValue }
+        let text = Self.composePresenceSummary(mode: mode, reason: reason)
+        do {
+            try await ControlChannel.shared.sendSystemEvent(text)
+        } catch {
+            self.logger.error("presence send failed: \(error.localizedDescription, privacy: .public)")
+        }
+    }
+
+    private static func composePresenceSummary(mode: String, reason: String) -> String {
+        let host = Host.current().localizedName ?? "unknown-host"
+        let ip = Self.primaryIPv4Address() ?? "ip-unknown"
+        let version = Self.appVersionString()
+        let lastInput = Self.lastInputSeconds()
+        let lastLabel = lastInput.map { "last input \($0)s ago" } ?? "last input unknown"
+        return "Node: \(host) (\(ip)) · app \(version) · \(lastLabel) · mode \(mode) · reason \(reason)"
+    }
+
+    private static func appVersionString() -> String {
+        let version = Bundle.main.object(forInfoDictionaryKey: "CFBundleShortVersionString") as? String ?? "dev"
+        if let build = Bundle.main.object(forInfoDictionaryKey: "CFBundleVersion") as? String {
+            return "\(version) (\(build))"
+        }
+        return version
+    }
+
+    private static func lastInputSeconds() -> Int? {
+        let anyEvent = CGEventType(rawValue: UInt32.max) ?? .null
+        let seconds = CGEventSource.secondsSinceLastEventType(.combinedSessionState, eventType: anyEvent)
+        if seconds.isNaN || seconds.isInfinite || seconds < 0 { return nil }
+        return Int(seconds.rounded())
+    }
+
+    private static func primaryIPv4Address() -> String? {
+        var addrList: UnsafeMutablePointer<ifaddrs>? = nil
+        guard getifaddrs(&addrList) == 0, let first = addrList else { return nil }
+        defer { freeifaddrs(addrList) }
+
+        var fallback: String?
+        var en0: String?
+
+        for ptr in sequence(first: first, next: { $0.pointee.ifa_next }) {
+            let flags = Int32(ptr.pointee.ifa_flags)
+            let isUp = (flags & IFF_UP) != 0
+            let isLoopback = (flags & IFF_LOOPBACK) != 0
+            let name = String(cString: ptr.pointee.ifa_name)
+            let family = ptr.pointee.ifa_addr.pointee.sa_family
+            if !isUp || isLoopback || family != UInt8(AF_INET) { continue }
+
+            var addr = ptr.pointee.ifa_addr.pointee
+            var buffer = [CChar](repeating: 0, count: Int(NI_MAXHOST))
+            let result = getnameinfo(&addr, socklen_t(ptr.pointee.ifa_addr.pointee.sa_len), &buffer, socklen_t(buffer.count), nil, 0, NI_NUMERICHOST)
+            guard result == 0 else { continue }
+            let len = buffer.prefix { $0 != 0 }
+            let ip = String(decoding: len.map { UInt8(bitPattern: $0) }, as: UTF8.self)
+
+            if name == "en0" { en0 = ip; break }
+            if fallback == nil { fallback = ip }
+        }
+
+        return en0 ?? fallback
+    }
+}
diff --git a/apps/macos/Sources/Clawdis/SettingsRootView.swift b/apps/macos/Sources/Clawdis/SettingsRootView.swift
index ad527bbfe..6a0f0fed7 100644
--- a/apps/macos/Sources/Clawdis/SettingsRootView.swift
+++ b/apps/macos/Sources/Clawdis/SettingsRootView.swift
@@ -21,6 +21,10 @@ struct SettingsRootView: View {
                 .tabItem { Label("Config", systemImage: "slider.horizontal.3") }
                 .tag(SettingsTab.config)
 
+            InstancesSettings()
+                .tabItem { Label("Instances", systemImage: "network") }
+                .tag(SettingsTab.instances)
+
             PermissionsSettings(
                 status: self.permissionMonitor.status,
                 refresh: self.refreshPerms,
@@ -104,15 +108,16 @@ struct SettingsRootView: View {
 }
 
 enum SettingsTab: CaseIterable {
-    case general, tools, sessions, config, voiceWake, permissions, debug, about
-    static let windowWidth: CGFloat = 520
-    static let windowHeight: CGFloat = 624
+    case general, tools, sessions, config, instances, voiceWake, permissions, debug, about
+    static let windowWidth: CGFloat = 598 // +15%
+    static let windowHeight: CGFloat = 718 // +15%
     var title: String {
         switch self {
         case .general: "General"
         case .tools: "Tools"
         case .sessions: "Sessions"
         case .config: "Config"
+        case .instances: "Instances"
         case .voiceWake: "Voice Wake"
         case .permissions: "Permissions"
         case .debug: "Debug"