diff --git a/packages/ui/src/components/instance/instance-shell2.tsx b/packages/ui/src/components/instance/instance-shell2.tsx
index bf10cc54..60fc717a 100644
--- a/packages/ui/src/components/instance/instance-shell2.tsx
+++ b/packages/ui/src/components/instance/instance-shell2.tsx
@@ -41,7 +41,7 @@ import SessionSidebar from "./shell/SessionSidebar"
 import { useSessionSidebarRequests } from "./shell/useSessionSidebarRequests"
 import RightPanel from "./shell/right-panel/RightPanel"
 import { useDrawerChrome } from "./shell/useDrawerChrome"
-import { getSessionStatus } from "../../stores/session-status"
+import { getRetrySeconds, getSessionRetry, getSessionStatus } from "../../stores/session-status"
 import { Maximize2, ShieldAlert } from "lucide-solid"
 
 import type { LayoutMode } from "./shell/types"
@@ -97,6 +97,7 @@ const InstanceShell2: Component<InstanceShellProps> = (props) => {
   const [selectedBackgroundProcess, setSelectedBackgroundProcess] = createSignal<BackgroundProcess | null>(null)
   const [showBackgroundOutput, setShowBackgroundOutput] = createSignal(false)
   const [permissionModalOpen, setPermissionModalOpen] = createSignal(false)
+  const [now, setNow] = createSignal(Date.now())
 
   // Worktree selector manages its own dialogs.
   const [showSessionSearch, setShowSessionSearch] = createSignal(false)
@@ -230,6 +231,12 @@ const InstanceShell2: Component<InstanceShellProps> = (props) => {
     window.localStorage.setItem(RIGHT_DRAWER_STORAGE_KEY, rightDrawerWidth().toString())
   })
 
+  createEffect(() => {
+    if (typeof window === "undefined") return
+    const timer = window.setInterval(() => setNow(Date.now()), 1000)
+    onCleanup(() => window.clearInterval(timer))
+  })
+
   const connectionStatus = () => sseManager.getStatus(props.instance.id)
   const connectionStatusClass = () => {
     const status = connectionStatus()
@@ -272,17 +279,28 @@ const InstanceShell2: Component<InstanceShellProps> = (props) => {
     }
 
     const status = getSessionStatus(props.instance.id, activeSessionId)
-    const text =
-      status === "working"
+    const retry = getSessionRetry(props.instance.id, activeSessionId)
+    const text = retry
+      ? (() => {
+          const seconds = getRetrySeconds(retry.next, now())
+          return seconds > 0 ? t("sessionList.status.retryingIn", { seconds: String(seconds) }) : t("sessionList.status.retrying")
+        })()
+      : status === "working"
         ? t("sessionList.status.working")
         : status === "compacting"
           ? t("sessionList.status.compacting")
           : t("sessionList.status.idle")
 
     return {
-      className: `session-${status}`,
+      className: `session-${retry ? "retrying" : status}`,
       text,
       showAlertIcon: false,
+      title: retry
+        ? t("sessionList.status.retryTooltip", {
+            message: retry.message,
+            attempt: String(retry.attempt),
+          })
+        : undefined,
     }
   })
 
@@ -290,7 +308,7 @@ const InstanceShell2: Component<InstanceShellProps> = (props) => {
     const pill = activeSessionStatusPill()
     if (!pill) return null
     return (
-      <span class={`status-indicator session-status session-status-list ${pill.className}`}>
+      <span class={`status-indicator session-status session-status-list ${pill.className}`} title={pill.title}>
         {pill.showAlertIcon ? <ShieldAlert class="w-3.5 h-3.5" aria-hidden="true" /> : <span class="status-dot" />}
         {pill.text}
       </span>
diff --git a/packages/ui/src/components/session-list.tsx b/packages/ui/src/components/session-list.tsx
index 58e52196..0634e7ae 100644
--- a/packages/ui/src/components/session-list.tsx
+++ b/packages/ui/src/components/session-list.tsx
@@ -1,7 +1,7 @@
 import { Component, For, Show, createSignal, createMemo, createEffect, JSX, onCleanup } from "solid-js"
 import type { SessionStatus } from "../types/session"
 import type { SessionThread } from "../stores/session-state"
-import { getSessionStatus } from "../stores/session-status"
+import { getRetrySeconds, getSessionRetry, getSessionStatus } from "../stores/session-status"
 import { Bot, User, Copy, Trash2, Pencil, ShieldAlert, ChevronDown, Search, Square, CheckSquare, MinusSquare, Split, RotateCw } from "lucide-solid"
 import KeyboardHint from "./keyboard-hint"
 import SessionRenameDialog from "./session-rename-dialog"
@@ -55,6 +55,13 @@ const SessionList: Component<SessionListProps> = (props) => {
 
   const [selectedSessionIds, setSelectedSessionIds] = createSignal<Set<string>>(new Set())
   const [reloadingSessionIds, setReloadingSessionIds] = createSignal<Set<string>>(new Set())
+  const [now, setNow] = createSignal(Date.now())
+
+  createEffect(() => {
+    if (typeof window === "undefined") return
+    const timer = window.setInterval(() => setNow(Date.now()), 1000)
+    onCleanup(() => window.clearInterval(timer))
+  })
 
   const normalizeSessionLabel = (sessionId: string) => {
     const session = sessionStateSessions().get(props.instanceId)?.get(sessionId)
@@ -400,7 +407,13 @@ const SessionList: Component<SessionListProps> = (props) => {
     const isActive = () => props.activeSessionId === rowProps.sessionId
     const title = () => session()?.title || t("sessionList.session.untitled")
     const status = () => getSessionStatus(props.instanceId, rowProps.sessionId)
+    const retry = () => getSessionRetry(props.instanceId, rowProps.sessionId)
     const statusLabel = () => {
+      const retryState = retry()
+      if (retryState) {
+        const seconds = getRetrySeconds(retryState.next, now())
+        return seconds > 0 ? t("sessionList.status.retryingIn", { seconds: String(seconds) }) : t("sessionList.status.retrying")
+      }
       switch (formatSessionStatus(status())) {
         case "working":
           return t("sessionList.status.working")
@@ -413,13 +426,21 @@ const SessionList: Component<SessionListProps> = (props) => {
     const needsPermission = () => Boolean(session()?.pendingPermission)
     const needsQuestion = () => Boolean((session() as any)?.pendingQuestion)
     const needsInput = () => needsPermission() || needsQuestion()
-    const statusClassName = () => (needsInput() ? "session-permission" : `session-${status()}`)
+    const statusClassName = () => (needsInput() ? "session-permission" : `session-${retry() ? "retrying" : status()}`)
     const statusText = () =>
       needsPermission()
         ? t("sessionList.status.needsPermission")
         : needsQuestion()
           ? t("sessionList.status.needsInput")
           : statusLabel()
+    const statusTooltip = () => {
+      const retryState = retry()
+      if (!retryState) return undefined
+      return t("sessionList.status.retryTooltip", {
+        message: retryState.message,
+        attempt: String(retryState.attempt),
+      })
+    }
  
     const isSelected = () => selectedSessionIds().has(rowProps.sessionId)
 
@@ -499,7 +520,7 @@ const SessionList: Component<SessionListProps> = (props) => {
                   <ChevronDown class={`w-3.5 h-3.5 transition-transform ${rowProps.expanded ? "" : "-rotate-90"}`} />
                 </span>
               </Show>
-              <span class={`status-indicator session-status session-status-list ${statusClassName()}`}>
+              <span class={`status-indicator session-status session-status-list ${statusClassName()}`} title={statusTooltip()}>
                 {needsInput() ? <ShieldAlert class="w-3.5 h-3.5" aria-hidden="true" /> : <span class="status-dot" />}
                 {statusText()}
               </span>
diff --git a/packages/ui/src/lib/i18n/messages/en/session.ts b/packages/ui/src/lib/i18n/messages/en/session.ts
index 63874bf7..71b8e1ee 100644
--- a/packages/ui/src/lib/i18n/messages/en/session.ts
+++ b/packages/ui/src/lib/i18n/messages/en/session.ts
@@ -15,6 +15,10 @@ export const sessionMessages = {
   "sessionList.status.working": "Working",
   "sessionList.status.compacting": "Compacting",
   "sessionList.status.idle": "Idle",
+  "sessionList.status.retrying": "Retrying",
+  "sessionList.status.retryingIn": "Retrying in {seconds}s",
+  "sessionList.status.retryTooltip": "{message} (Attempt {attempt})",
+  "sessionList.status.retryToast": "{countdown}: {message} (Attempt {attempt})",
   "sessionList.status.needsPermission": "Needs Permission",
   "sessionList.status.needsInput": "Needs Input",
   "sessionList.expand.collapseAriaLabel": "Collapse session",
diff --git a/packages/ui/src/lib/i18n/messages/es/session.ts b/packages/ui/src/lib/i18n/messages/es/session.ts
index 53f918aa..57edfe06 100644
--- a/packages/ui/src/lib/i18n/messages/es/session.ts
+++ b/packages/ui/src/lib/i18n/messages/es/session.ts
@@ -15,6 +15,10 @@ export const sessionMessages = {
   "sessionList.status.working": "Trabajando",
   "sessionList.status.compacting": "Compactando",
   "sessionList.status.idle": "Inactiva",
+  "sessionList.status.retrying": "Reintentando",
+  "sessionList.status.retryingIn": "Reintentando en {seconds}s",
+  "sessionList.status.retryTooltip": "{message} (Intento {attempt})",
+  "sessionList.status.retryToast": "{countdown}: {message} (Intento {attempt})",
   "sessionList.status.needsPermission": "Requiere permiso",
   "sessionList.status.needsInput": "Requiere entrada",
   "sessionList.expand.collapseAriaLabel": "Colapsar sesión",
diff --git a/packages/ui/src/lib/i18n/messages/fr/session.ts b/packages/ui/src/lib/i18n/messages/fr/session.ts
index 72e24c9a..8913f085 100644
--- a/packages/ui/src/lib/i18n/messages/fr/session.ts
+++ b/packages/ui/src/lib/i18n/messages/fr/session.ts
@@ -15,6 +15,10 @@ export const sessionMessages = {
   "sessionList.status.working": "En cours",
   "sessionList.status.compacting": "Compactage",
   "sessionList.status.idle": "Inactif",
+  "sessionList.status.retrying": "Nouvelle tentative",
+  "sessionList.status.retryingIn": "Nouvelle tentative dans {seconds}s",
+  "sessionList.status.retryTooltip": "{message} (Tentative {attempt})",
+  "sessionList.status.retryToast": "{countdown} : {message} (Tentative {attempt})",
   "sessionList.status.needsPermission": "Autorisation requise",
   "sessionList.status.needsInput": "Entrée requise",
   "sessionList.expand.collapseAriaLabel": "Réduire la session",
diff --git a/packages/ui/src/lib/i18n/messages/he/session.ts b/packages/ui/src/lib/i18n/messages/he/session.ts
index ae104cfa..7a529308 100644
--- a/packages/ui/src/lib/i18n/messages/he/session.ts
+++ b/packages/ui/src/lib/i18n/messages/he/session.ts
@@ -15,6 +15,10 @@ export const sessionMessages = {
   "sessionList.status.working": "עובד",
   "sessionList.status.compacting": "מסכם",
   "sessionList.status.idle": "מוכן",
+  "sessionList.status.retrying": "מנסה שוב",
+  "sessionList.status.retryingIn": "מנסה שוב בעוד {seconds}ש׳",
+  "sessionList.status.retryTooltip": "{message} (ניסיון {attempt})",
+  "sessionList.status.retryToast": "{countdown}: {message} (ניסיון {attempt})",
   "sessionList.status.needsPermission": "נדרש אישור",
   "sessionList.status.needsInput": "נדרש קלט",
   "sessionList.expand.collapseAriaLabel": "כווץ סשן",
diff --git a/packages/ui/src/lib/i18n/messages/ja/session.ts b/packages/ui/src/lib/i18n/messages/ja/session.ts
index c8d72f92..72df1965 100644
--- a/packages/ui/src/lib/i18n/messages/ja/session.ts
+++ b/packages/ui/src/lib/i18n/messages/ja/session.ts
@@ -15,6 +15,10 @@ export const sessionMessages = {
   "sessionList.status.working": "作業中",
   "sessionList.status.compacting": "圧縮中",
   "sessionList.status.idle": "待機中",
+  "sessionList.status.retrying": "再試行中",
+  "sessionList.status.retryingIn": "{seconds}秒後に再試行",
+  "sessionList.status.retryTooltip": "{message}（{attempt}回目）",
+  "sessionList.status.retryToast": "{countdown}: {message}（{attempt}回目）",
   "sessionList.status.needsPermission": "許可待ち",
   "sessionList.status.needsInput": "入力待ち",
   "sessionList.expand.collapseAriaLabel": "セッションを折りたたむ",
diff --git a/packages/ui/src/lib/i18n/messages/ru/session.ts b/packages/ui/src/lib/i18n/messages/ru/session.ts
index bf36bdeb..3b02f2fc 100644
--- a/packages/ui/src/lib/i18n/messages/ru/session.ts
+++ b/packages/ui/src/lib/i18n/messages/ru/session.ts
@@ -15,6 +15,10 @@ export const sessionMessages = {
   "sessionList.status.working": "Работает",
   "sessionList.status.compacting": "Компактация",
   "sessionList.status.idle": "Простой",
+  "sessionList.status.retrying": "Повтор",
+  "sessionList.status.retryingIn": "Повтор через {seconds}с",
+  "sessionList.status.retryTooltip": "{message} (Попытка {attempt})",
+  "sessionList.status.retryToast": "{countdown}: {message} (Попытка {attempt})",
   "sessionList.status.needsPermission": "Требуется разрешение",
   "sessionList.status.needsInput": "Требуется ввод",
   "sessionList.expand.collapseAriaLabel": "Свернуть сессию",
diff --git a/packages/ui/src/lib/i18n/messages/zh-Hans/session.ts b/packages/ui/src/lib/i18n/messages/zh-Hans/session.ts
index 1aa5fcb6..caf776e6 100644
--- a/packages/ui/src/lib/i18n/messages/zh-Hans/session.ts
+++ b/packages/ui/src/lib/i18n/messages/zh-Hans/session.ts
@@ -15,6 +15,10 @@ export const sessionMessages = {
   "sessionList.status.working": "工作中",
   "sessionList.status.compacting": "压缩中",
   "sessionList.status.idle": "空闲",
+  "sessionList.status.retrying": "重试中",
+  "sessionList.status.retryingIn": "{seconds} 秒后重试",
+  "sessionList.status.retryTooltip": "{message}（第 {attempt} 次尝试）",
+  "sessionList.status.retryToast": "{countdown}: {message}（第 {attempt} 次尝试）",
   "sessionList.status.needsPermission": "需要权限",
   "sessionList.status.needsInput": "需要输入",
   "sessionList.expand.collapseAriaLabel": "折叠会话",
diff --git a/packages/ui/src/stores/session-api.ts b/packages/ui/src/stores/session-api.ts
index 6c904fd7..54a371e9 100644
--- a/packages/ui/src/stores/session-api.ts
+++ b/packages/ui/src/stores/session-api.ts
@@ -1,4 +1,4 @@
-import { mapSdkSessionStatus, type Session, type SessionStatus } from "../types/session"
+import { mapSdkSessionRetry, mapSdkSessionStatus, type Session, type SessionStatus } from "../types/session"
 import type { Message } from "../types/message"
 import type { FileDiff } from "@opencode-ai/sdk/v2/client"
 
@@ -149,12 +149,15 @@ async function fetchSessions(instanceId: string): Promise<void> {
       const existingStatus = existingSession?.status
 
       let status: SessionStatus
+      let retry = existingSession?.retry ?? null
       if (existingStatus === "compacting") {
         status = "compacting"
+        retry = null
       } else {
         const rawStatus = (apiSession as any)?.status ?? statusById[apiSession.id]
         const hasType = rawStatus && typeof rawStatus === "object" && typeof rawStatus.type === "string"
         status = hasType ? mapSdkSessionStatus(rawStatus) : existingStatus ?? "idle"
+        retry = hasType ? mapSdkSessionRetry(rawStatus) : retry
       }
 
       sessionMap.set(apiSession.id, {
@@ -165,6 +168,7 @@ async function fetchSessions(instanceId: string): Promise<void> {
         agent: existingSession?.agent ?? "",
         model: existingSession?.model ?? { providerId: "", modelId: "" },
         status,
+        retry,
         version: apiSession.version,
         time: {
           ...apiSession.time,
diff --git a/packages/ui/src/stores/session-events.ts b/packages/ui/src/stores/session-events.ts
index 91c4aabc..713c95d1 100644
--- a/packages/ui/src/stores/session-events.ts
+++ b/packages/ui/src/stores/session-events.ts
@@ -28,7 +28,7 @@ import type { PermissionReplyEventPropertiesLike, PermissionRequestLike } from "
 import { getQuestionId, getQuestionSessionId, getRequestIdFromQuestionReply } from "../types/question"
 import type { QuestionRequest } from "../types/question"
 import type { EventQuestionReplied, EventQuestionRejected } from "@opencode-ai/sdk/v2"
-import { showToastNotification, ToastVariant } from "../lib/notifications"
+import { showToastNotification, type ToastHandle, ToastVariant } from "../lib/notifications"
 import { sendOsNotification } from "../lib/os-notifications"
 import { preferences } from "./preferences"
 import {
@@ -39,7 +39,14 @@ import {
   removeQuestionFromQueue,
 } from "./instances"
 import { showAlertDialog } from "./alerts"
-import { createClientSession, mapSdkSessionStatus, type Session, type SessionStatus } from "../types/session"
+import {
+  createClientSession,
+  mapSdkSessionRetry,
+  mapSdkSessionStatus,
+  type Session,
+  type SessionRetryState,
+  type SessionStatus,
+} from "../types/session"
 import { ensureSessionParentExpanded, sessions, setSessions, syncInstanceSessionIndicator, withSession } from "./session-state"
 import { normalizeMessagePart } from "./message-v2/normalizers"
 import { updateSessionInfo } from "./message-v2/session-info"
@@ -67,6 +74,15 @@ import { handleConversationAssistantPartUpdated } from "./conversation-speech"
 
 const log = getLogger("sse")
 const pendingSessionFetches = new Map<string, Promise<void>>()
+let activeRetryToast: ToastHandle | null = null
+
+function isSameRetryState(left: SessionRetryState | null | undefined, right: SessionRetryState | null | undefined): boolean {
+  const a = left ?? null
+  const b = right ?? null
+  if (a === b) return true
+  if (!a || !b) return false
+  return a.attempt === b.attempt && a.message === b.message && a.next === b.next
+}
 
 function shouldSendOsNotification(kind: "needsInput" | "idle"): boolean {
   if (typeof document === "undefined") return false
@@ -131,18 +147,20 @@ interface TuiToastEvent {
 
 const ALLOWED_TOAST_VARIANTS = new Set<ToastVariant>(["info", "success", "warning", "error"])
 
-function applySessionStatus(instanceId: string, sessionId: string, status: SessionStatus) {
+function applySessionStatus(instanceId: string, sessionId: string, status: SessionStatus, retry?: SessionRetryState | null) {
   let parentToExpand: string | null = null
 
   withSession(instanceId, sessionId, (session) => {
     const current = session.status ?? "idle"
-    if (current === status) return false
+    const nextRetry = retry ?? null
+    if (current === status && isSameRetryState(session.retry, nextRetry)) return false
 
     if (current === "compacting" && status !== "compacting") {
       return false
     }
 
     session.status = status
+    session.retry = status === "working" ? nextRetry : null
 
     // Auto-expand the parent thread when a child session starts working.
     // Users can still collapse it; we only expand on the transition.
@@ -172,6 +190,7 @@ async function fetchSessionInfo(instanceId: string, sessionId: string, directory
     )
 
     let fetchedStatus: SessionStatus = "idle"
+    let fetchedRetry: SessionRetryState | null = null
     try {
       let statuses: Record<string, any> = {}
       try {
@@ -187,11 +206,13 @@ async function fetchSessionInfo(instanceId: string, sessionId: string, directory
       const rawStatus = (info as any)?.status ?? statuses?.[sessionId]
       const hasType = rawStatus && typeof rawStatus === "object" && typeof rawStatus.type === "string"
       fetchedStatus = hasType ? mapSdkSessionStatus(rawStatus) : "idle"
+      fetchedRetry = hasType ? mapSdkSessionRetry(rawStatus) : null
     } catch (error) {
       log.error("Failed to fetch session status", error)
     }
 
     const fetched = createClientSession(info, instanceId, "", { providerId: "", modelId: "" }, fetchedStatus)
+    fetched.retry = fetchedRetry
 
     let updatedInstanceSessions: Map<string, Session> | undefined
     let shouldExpandParent: string | null = null
@@ -205,6 +226,7 @@ async function fetchSessionInfo(instanceId: string, sessionId: string, directory
         agent: existing?.agent ?? fetched.agent,
         model: existing?.model ?? fetched.model,
         status: existing?.status === "compacting" ? "compacting" : fetched.status,
+        retry: existing?.status === "compacting" ? null : fetched.retry,
         pendingPermission: existing?.pendingPermission ?? fetched.pendingPermission,
         pendingQuestion: existing?.pendingQuestion ?? false,
       }
@@ -231,14 +253,20 @@ async function fetchSessionInfo(instanceId: string, sessionId: string, directory
   }
 }
 
-function ensureSessionStatus(instanceId: string, sessionId: string, status: SessionStatus, directory?: string) {
+function ensureSessionStatus(
+  instanceId: string,
+  sessionId: string,
+  status: SessionStatus,
+  directory?: string,
+  retry?: SessionRetryState | null,
+) {
   const instanceSessions = sessions().get(instanceId)
   const existing = instanceSessions?.get(sessionId)
   if (existing) {
-    if ((existing.status ?? "idle") === status) {
+    if ((existing.status ?? "idle") === status && isSameRetryState(existing.retry, retry)) {
       return
     }
-    applySessionStatus(instanceId, sessionId, status)
+    applySessionStatus(instanceId, sessionId, status, retry)
     return
   }
 
@@ -250,7 +278,7 @@ function ensureSessionStatus(instanceId: string, sessionId: string, status: Sess
   const pending = (async () => {
     const fetched = await fetchSessionInfo(instanceId, sessionId, directory)
     if (!fetched) return
-    applySessionStatus(instanceId, sessionId, status)
+    applySessionStatus(instanceId, sessionId, status, retry)
   })()
 
   pendingSessionFetches.set(key, pending)
@@ -428,6 +456,7 @@ function handleSessionUpdate(instanceId: string, event: EventSessionUpdated): vo
         modelId: "",
       },
       status: "idle",
+      retry: null,
       version: info.version || "0",
       time: info.time
         ? { ...info.time }
@@ -461,6 +490,7 @@ function handleSessionUpdate(instanceId: string, event: EventSessionUpdated): vo
       ...existingSession,
       title: info.title || existingSession.title,
       status: existingSession.status ?? "idle",
+      retry: existingSession.retry ?? null,
       time: mergedTime,
       revert: info.revert
         ? {
@@ -532,8 +562,29 @@ function handleSessionStatus(instanceId: string, event: EventSessionStatus): voi
   const sessionId = event.properties?.sessionID
   if (!sessionId) return
 
-  const status = mapSdkSessionStatus(event.properties.status)
-  ensureSessionStatus(instanceId, sessionId, status, (event as any)?.directory)
+  const rawStatus = event.properties.status
+  const status = mapSdkSessionStatus(rawStatus)
+  const retry = mapSdkSessionRetry(rawStatus)
+  ensureSessionStatus(instanceId, sessionId, status, (event as any)?.directory, retry)
+  if (retry) {
+    const remainingSeconds = Math.max(0, Math.round((retry.next - Date.now()) / 1000))
+    const countdown =
+      remainingSeconds > 0
+        ? tGlobal("sessionList.status.retryingIn", { seconds: String(remainingSeconds) })
+        : tGlobal("sessionList.status.retrying")
+    const label = getSessionTitle(instanceId, sessionId)
+    activeRetryToast?.dismiss()
+    activeRetryToast = showToastNotification({
+      title: label || getInstanceDisplayName(instanceId),
+      message: tGlobal("sessionList.status.retryToast", {
+        countdown,
+        message: retry.message,
+        attempt: String(retry.attempt),
+      }),
+      variant: "error",
+      duration: 7000,
+    })
+  }
   log.info(`[SSE] Session status updated: ${sessionId}`, { status })
 }
 
@@ -547,6 +598,7 @@ function handleSessionCompacted(instanceId: string, event: EventSessionCompacted
   if (existing) {
     withSession(instanceId, sessionID, (session) => {
       session.status = "working"
+      session.retry = null
     })
   } else {
     ensureSessionStatus(instanceId, sessionID, "working", (event as any)?.directory)
diff --git a/packages/ui/src/stores/session-state.ts b/packages/ui/src/stores/session-state.ts
index aa0c67d0..c4703e0b 100644
--- a/packages/ui/src/stores/session-state.ts
+++ b/packages/ui/src/stores/session-state.ts
@@ -353,6 +353,9 @@ function setSessionStatus(instanceId: string, sessionId: string, status: Session
     if (session.status === status) return false
     const previous = session.status
     session.status = status
+    if (status !== "working") {
+      session.retry = null
+    }
 
     // If a child session starts working, auto-expand its parent thread once.
     // Users can still collapse it afterwards; we only expand on the transition.
diff --git a/packages/ui/src/stores/session-status.ts b/packages/ui/src/stores/session-status.ts
index 02d33a62..865f1c8a 100644
--- a/packages/ui/src/stores/session-status.ts
+++ b/packages/ui/src/stores/session-status.ts
@@ -1,4 +1,4 @@
-import type { Session, SessionStatus } from "../types/session"
+import type { Session, SessionRetryState, SessionStatus } from "../types/session"
 import { getInstanceSessionIndicatorStatusCached, sessions } from "./session-state"
 
 function getSession(instanceId: string, sessionId: string): Session | null {
@@ -14,6 +14,15 @@ export function getSessionStatus(instanceId: string, sessionId: string): Session
   return session.status ?? "idle"
 }
 
+export function getSessionRetry(instanceId: string, sessionId: string): SessionRetryState | null {
+  const session = getSession(instanceId, sessionId)
+  return session?.retry ?? null
+}
+
+export function getRetrySeconds(next: number, now = Date.now()): number {
+  return Math.max(0, Math.round((next - now) / 1000))
+}
+
 export type InstanceSessionIndicatorStatus = "permission" | SessionStatus
 
 export function getInstanceSessionIndicatorStatus(instanceId: string): InstanceSessionIndicatorStatus {
diff --git a/packages/ui/src/styles/panels.css b/packages/ui/src/styles/panels.css
index d4503635..f7f5691c 100644
--- a/packages/ui/src/styles/panels.css
+++ b/packages/ui/src/styles/panels.css
@@ -184,6 +184,7 @@
 }
 
 .status-indicator.session-status.session-working,
+.status-indicator.session-status.session-retrying,
 .status-indicator.session-status.session-compacting,
 .status-indicator.session-status.session-idle {
   font-weight: var(--font-weight-medium);
@@ -194,6 +195,11 @@
   --session-status-dot: var(--session-status-working-fg);
 }
 
+.status-indicator.session-status.session-retrying {
+  color: var(--status-error);
+  --session-status-dot: var(--status-error);
+}
+
 .status-indicator.session-status.session-compacting {
   color: var(--session-status-compacting-fg);
   --session-status-dot: var(--session-status-compacting-fg);
@@ -222,6 +228,10 @@
   background-color: var(--session-status-working-bg);
 }
 
+.status-indicator.session-status.session-retrying.session-status-list {
+  background-color: var(--status-error-bg);
+}
+
 .status-indicator.session-status.session-compacting.session-status-list {
   background-color: var(--session-status-compacting-bg);
 }
diff --git a/packages/ui/src/styles/panels/session-layout.css b/packages/ui/src/styles/panels/session-layout.css
index 479c37f7..28374dcc 100644
--- a/packages/ui/src/styles/panels/session-layout.css
+++ b/packages/ui/src/styles/panels/session-layout.css
@@ -394,6 +394,7 @@ session-sidebar-controls .selector-trigger-primary {
 }
 
 .status-indicator.session-status.session-working,
+.status-indicator.session-status.session-retrying,
 .status-indicator.session-status.session-compacting,
 .status-indicator.session-status.session-idle {
   font-weight: var(--font-weight-medium);
@@ -404,6 +405,11 @@ session-sidebar-controls .selector-trigger-primary {
   --session-status-dot: var(--session-status-working-fg);
 }
 
+.status-indicator.session-status.session-retrying {
+  color: var(--status-error);
+  --session-status-dot: var(--status-error);
+}
+
 .status-indicator.session-status.session-compacting {
   color: var(--session-status-compacting-fg);
   --session-status-dot: var(--session-status-compacting-fg);
@@ -432,6 +438,10 @@ session-sidebar-controls .selector-trigger-primary {
   background-color: var(--session-status-working-bg);
 }
 
+.status-indicator.session-status.session-retrying.session-status-list {
+  background-color: var(--status-error-bg);
+}
+
 .status-indicator.session-status.session-compacting.session-status-list {
   background-color: var(--session-status-compacting-bg);
 }
diff --git a/packages/ui/src/types/session.ts b/packages/ui/src/types/session.ts
index ab7f6c89..179b712a 100644
--- a/packages/ui/src/types/session.ts
+++ b/packages/ui/src/types/session.ts
@@ -17,6 +17,12 @@ export type {
 
 export type SessionStatus = "idle" | "working" | "compacting"
 
+export interface SessionRetryState {
+  attempt: number
+  message: string
+  next: number
+}
+
 export function mapSdkSessionStatus(status: SDKSessionStatus | null | undefined): SessionStatus {
   if (!status || status.type === "idle") {
     return "idle"
@@ -26,6 +32,18 @@ export function mapSdkSessionStatus(status: SDKSessionStatus | null | undefined)
   return "working"
 }
 
+export function mapSdkSessionRetry(status: SDKSessionStatus | null | undefined): SessionRetryState | null {
+  if (!status || status.type !== "retry") {
+    return null
+  }
+
+  return {
+    attempt: typeof status.attempt === "number" ? status.attempt : 1,
+    message: typeof status.message === "string" ? status.message : "",
+    next: typeof status.next === "number" ? status.next : Date.now(),
+  }
+}
+
 // Our client-specific Session interface extending SDK Session
 export interface Session
   extends Omit<import("@opencode-ai/sdk").Session, "projectID" | "directory" | "parentID"> {
@@ -40,6 +58,7 @@ export interface Session
   pendingPermission?: boolean // Indicates if session is waiting on user permission
   pendingQuestion?: boolean // Indicates if session is waiting on user input
   status: SessionStatus // Single source of truth for session status
+  retry?: SessionRetryState | null // Retry metadata for transient backoff states
   diff?: FileDiff[] // Session-level file diffs (hydrated via session.diff)
 }