diff --git a/web/src/views/acp/AcpSessionDetailView.vue b/web/src/views/acp/AcpSessionDetailView.vue
new file mode 100644
index 0000000..b6f4e42
--- /dev/null
+++ b/web/src/views/acp/AcpSessionDetailView.vue
@@ -0,0 +1,148 @@
+<script setup lang="ts">
+import { ref, shallowRef, computed, onMounted, onUnmounted, watch, nextTick } from 'vue'
+import { useRoute } from 'vue-router'
+import { useAcpStore } from '@/stores/acp'
+import { useAcpStream, type UseAcpStreamReturn } from '@/composables/useAcpStream'
+import type { AcpEvent } from '@/api/acp'
+import SessionStatusBadge from '@/components/acp/SessionStatusBadge.vue'
+import AgentEventCard from '@/components/acp/AgentEventCard.vue'
+import PromptInput from '@/components/acp/PromptInput.vue'
+
+const route = useRoute()
+const store = useAcpStore()
+
+const sessionId = computed(() => route.params.sessionId as string)
+
+const stream = shallowRef<UseAcpStreamReturn | null>(null)
+const eventsContainer = ref<HTMLElement | null>(null)
+const errorMsg = ref<string | null>(null)
+
+const events = computed<AcpEvent[]>(() => stream.value?.events.value ?? [])
+
+onMounted(async () => {
+  try {
+    await store.getSession(sessionId.value)
+  } catch (e) {
+    errorMsg.value = e instanceof Error ? e.message : 'failed to load session'
+    return
+  }
+  stream.value = useAcpStream(sessionId.value)
+  watch(
+    () => events.value.length,
+    async () => {
+      await nextTick()
+      if (eventsContainer.value) {
+        eventsContainer.value.scrollTop = eventsContainer.value.scrollHeight
+      }
+    },
+  )
+})
+
+onUnmounted(() => {
+  stream.value?.close()
+})
+
+const isPrompting = computed(() => {
+  const evs = events.value
+  let lastPrompt = -1
+  for (let i = evs.length - 1; i >= 0; i--) {
+    if (evs[i].method === 'session/prompt' && evs[i].direction === 'in') {
+      lastPrompt = i
+      break
+    }
+  }
+  if (lastPrompt < 0) return false
+  for (let i = lastPrompt + 1; i < evs.length; i++) {
+    if (evs[i].kind === 'response') return false
+  }
+  return true
+})
+
+function onPrompt(text: string) {
+  const sess = store.currentSession
+  if (!sess?.agent_session_id) {
+    errorMsg.value = 'Agent not ready yet'
+    return
+  }
+  errorMsg.value = null
+  stream.value?.prompt(text, sess.agent_session_id)
+}
+
+function onCancel() {
+  const sess = store.currentSession
+  if (!sess?.agent_session_id) return
+  stream.value?.cancel(sess.agent_session_id)
+}
+
+async function terminate() {
+  if (!confirm('Terminate this session?')) return
+  try {
+    await store.terminateSession(sessionId.value)
+  } catch (e) {
+    errorMsg.value = e instanceof Error ? e.message : 'terminate failed'
+  }
+}
+
+const sessionStatus = computed(
+  () => stream.value?.sessionStatus.value ?? store.currentSession?.status ?? 'starting',
+)
+</script>
+
+<template>
+  <div class="flex flex-col h-full">
+    <!-- Top bar -->
+    <div class="flex items-center justify-between px-4 py-2 border-b">
+      <div class="space-x-3 text-sm">
+        <span class="font-mono">{{ store.currentSession?.branch }}</span>
+        <span class="text-gray-500">·</span>
+        <span
+          class="text-xs text-gray-500 font-mono truncate max-w-md inline-block align-middle"
+        >
+          {{ store.currentSession?.cwd_path }}
+        </span>
+      </div>
+      <div class="flex items-center gap-2">
+        <SessionStatusBadge :status="sessionStatus" />
+        <button
+          v-if="sessionStatus === 'starting' || sessionStatus === 'running'"
+          class="px-2 py-1 text-xs rounded border text-red-600 hover:bg-red-50"
+          @click="terminate"
+        >
+          Terminate
+        </button>
+      </div>
+    </div>
+
+    <p v-if="errorMsg" class="px-4 py-2 text-sm text-red-600 bg-red-50">
+      {{ errorMsg }}
+    </p>
+
+    <!-- Events stream -->
+    <div
+      ref="eventsContainer"
+      class="flex-1 overflow-y-auto px-4 py-3 space-y-1"
+    >
+      <AgentEventCard
+        v-for="ev in events"
+        :key="ev.id"
+        :event="ev"
+      />
+      <div
+        v-if="events.length === 0"
+        class="text-center text-gray-400 py-8"
+      >
+        Waiting for agent...
+      </div>
+    </div>
+
+    <!-- Prompt input -->
+    <div class="border-t px-4 py-3">
+      <PromptInput
+        :disabled="sessionStatus === 'crashed' || sessionStatus === 'exited'"
+        :is-prompting="isPrompting"
+        @send="onPrompt"
+        @cancel="onCancel"
+      />
+    </div>
+  </div>
+</template>