diff --git a/app/javascript/dashboard/api/captain/agentSessions.js b/app/javascript/dashboard/api/captain/agentSessions.js
new file mode 100644
index 000000000..a557b5938
--- /dev/null
+++ b/app/javascript/dashboard/api/captain/agentSessions.js
@@ -0,0 +1,9 @@
+import ApiClient from '../ApiClient';
+
+class CaptainAgentSessions extends ApiClient {
+  constructor() {
+    super('captain/agent_sessions', { accountScoped: true });
+  }
+}
+
+export default new CaptainAgentSessions();
diff --git a/app/javascript/dashboard/components-next/message/CaptainGenerationDetails.vue b/app/javascript/dashboard/components-next/message/CaptainGenerationDetails.vue
new file mode 100644
index 000000000..752616109
--- /dev/null
+++ b/app/javascript/dashboard/components-next/message/CaptainGenerationDetails.vue
@@ -0,0 +1,342 @@
+<script setup>
+import { computed, ref } from 'vue';
+import { useI18n, I18nT } from 'vue-i18n';
+import Icon from 'dashboard/components-next/icon/Icon.vue';
+import Popover from 'dashboard/components-next/popover/Popover.vue';
+import { useStore, useMapGetter } from 'dashboard/composables/store';
+import { useAccount } from 'dashboard/composables/useAccount';
+import { FEATURE_FLAGS } from 'dashboard/featureFlags';
+import { useMessageContext } from './provider.js';
+import { MESSAGE_VARIANTS, ORIENTATION } from './constants';
+
+const props = defineProps({
+  messageId: { type: Number, required: true },
+});
+
+const { t } = useI18n();
+const { orientation, variant, createdAt } = useMessageContext();
+const store = useStore();
+const { isCloudFeatureEnabled } = useAccount();
+
+const isOpen = ref(false);
+
+const showSparkle = computed(() =>
+  isCloudFeatureEnabled(FEATURE_FLAGS.CAPTAIN_V2)
+);
+
+const session = computed(() =>
+  store.getters['captainAgentSessions/getSessionByMessageId'](props.messageId)
+);
+const hasFetched = computed(() =>
+  store.getters['captainAgentSessions/hasFetched'](props.messageId)
+);
+const isLoading = computed(
+  () =>
+    !hasFetched.value ||
+    store.getters['captainAgentSessions/isFetching'](props.messageId)
+);
+
+const citations = computed(() => session.value?.citations || []);
+
+const scenarioTitles = computed(() =>
+  (session.value?.scenarios || []).reduce((map, scenario) => {
+    map[scenario.id] = scenario.title;
+    return map;
+  }, {})
+);
+
+// Fallback for agents without a matching scenario title:
+// "chatwoot_assistant" → "Chatwoot assistant",
+// "scenario_5_chatwoot_uptime_agent" → "Chatwoot uptime".
+const humanizeAgentName = agentName => {
+  const label = agentName
+    .replace(/^scenario_\d+_/, '')
+    .replace(/_agent$/, '')
+    .replaceAll('_', ' ')
+    .trim();
+  return label.charAt(0).toUpperCase() + label.slice(1);
+};
+
+const handoffLabel = agentName => {
+  const scenarioId = agentName.match(/^scenario_(\d+)/)?.[1];
+  return scenarioTitles.value[scenarioId] || humanizeAgentName(agentName);
+};
+
+const ACRONYMS = ['faq', 'api', 'url', 'id', 'sla', 'csat'];
+
+// Tool names arrive as RubyLLM identifiers like
+// "captain--tools--faq_lookup" or "custom_get_status_page_overview";
+// show "FAQ Lookup" / "Get Status Page Overview" instead.
+const humanizeToolName = name => {
+  return (name || '')
+    .split('--')
+    .pop()
+    .replace(/^custom_/, '')
+    .split('_')
+    .filter(Boolean)
+    .map(word =>
+      ACRONYMS.includes(word)
+        ? word.toUpperCase()
+        : word.charAt(0).toUpperCase() + word.slice(1)
+    )
+    .join(' ');
+};
+
+// Argument keys are camelCased by the store ("labelName"); show "Label Name".
+const humanizeArgumentKey = key =>
+  key
+    .replace(/([a-z])([A-Z])/g, '$1 $2')
+    .split(' ')
+    .map(word => word.charAt(0).toUpperCase() + word.slice(1))
+    .join(' ');
+
+const formatArguments = args => {
+  if (!args || typeof args !== 'object') return '';
+  return Object.entries(args)
+    .map(([key, value]) => `${humanizeArgumentKey(key)}: ${value}`)
+    .join(', ');
+};
+
+// Timeline of what Captain did during the run: tool calls (with their
+// arguments) and scenario/agent handoffs. Message bodies and raw tool
+// results are intentionally not echoed here.
+const steps = computed(() => {
+  const runContext = session.value?.runContext;
+  const result = [];
+  let currentAgent = null;
+
+  (Array.isArray(runContext) ? runContext : []).forEach(entry => {
+    if (entry?.role !== 'assistant') return;
+
+    const agentName = entry.agentName;
+    if (agentName && agentName !== currentAgent) {
+      if (currentAgent !== null) {
+        result.push({ type: 'handoff', name: handoffLabel(agentName) });
+      }
+      currentAgent = agentName;
+    }
+
+    (entry.toolCalls || []).forEach(call => {
+      // Agent-to-agent transfers surface as "handoff_to_<agent>" tool calls;
+      // the agent_name change above already yields a handoff step for them.
+      if (call.name?.startsWith('handoff_to_')) return;
+
+      result.push({
+        type: 'tool',
+        name: humanizeToolName(call.name),
+        detail: formatArguments(call.arguments),
+      });
+    });
+  });
+
+  return result;
+});
+
+// The final assistant entry stores structured content ({response, reasoning});
+// surface the model's reasoning for the reply it produced.
+const reasoning = computed(() => {
+  const runContext = session.value?.runContext;
+  if (!Array.isArray(runContext)) return '';
+
+  const entry = [...runContext]
+    .reverse()
+    .find(item => item?.role === 'assistant' && item.content?.reasoning);
+  return entry?.content?.reasoning || '';
+});
+
+const STEP_ICONS = {
+  tool: 'i-ph-wrench',
+  handoff: 'i-ph-user-switch',
+};
+
+const STEP_KEYPATHS = {
+  tool: 'CONVERSATION.CAPTAIN_GENERATION.STEP_TOOL',
+  handoff: 'CONVERSATION.CAPTAIN_GENERATION.STEP_HANDOFF',
+};
+
+const currentUser = useMapGetter('getCurrentUser');
+const isSuperAdmin = computed(() => currentUser.value.type === 'SuperAdmin');
+
+// Model and credits are only surfaced to super admins and in development.
+const devDetails = computed(() => {
+  if (!session.value) return null;
+  if (!import.meta.env.DEV && !isSuperAdmin.value) return null;
+  const model = t('CONVERSATION.CAPTAIN_GENERATION.MODEL', {
+    model: session.value.llmModel,
+  });
+  const credits = t('CONVERSATION.CAPTAIN_GENERATION.CREDITS', {
+    credits: session.value.creditsConsumed,
+  });
+  return `${model} · ${credits}`;
+});
+
+// With the sparkle at the row start, the meta gets pushed to the opposite end;
+// without it, fall back to the message orientation.
+const rowLayoutClass = computed(() => {
+  if (showSparkle.value) return 'justify-between';
+  return orientation.value === ORIENTATION.LEFT
+    ? 'justify-start'
+    : 'justify-end';
+});
+
+// Blend the sparkle with the bubble background: amber on private notes,
+// slate everywhere else. Tokens adapt to dark mode on their own.
+const sparkleColorClass = computed(() => {
+  if (variant.value === MESSAGE_VARIANTS.PRIVATE) {
+    return isOpen.value
+      ? 'text-n-amber-12/80'
+      : 'text-n-amber-12/40 hover:text-n-amber-12/70';
+  }
+  return isOpen.value
+    ? 'text-n-slate-12'
+    : 'text-n-slate-11/60 hover:text-n-slate-12';
+});
+
+const popoverAlign = computed(() =>
+  orientation.value === ORIENTATION.LEFT ? 'start' : 'end'
+);
+
+const prefetch = () => {
+  store.dispatch('captainAgentSessions/fetch', {
+    messageId: props.messageId,
+    createdAt: createdAt.value,
+  });
+};
+
+const onPopoverShow = () => {
+  isOpen.value = true;
+  prefetch();
+};
+
+const onPopoverHide = () => {
+  isOpen.value = false;
+};
+</script>
+
+<template>
+  <div class="flex items-center gap-1.5" :class="rowLayoutClass">
+    <Popover
+      v-if="showSparkle"
+      :align="popoverAlign"
+      @show="onPopoverShow"
+      @hide="onPopoverHide"
+    >
+      <button
+        v-tooltip="t('CONVERSATION.CAPTAIN_GENERATION.TITLE')"
+        type="button"
+        class="inline-flex items-center gap-1 p-0 bg-transparent border-0 cursor-pointer"
+        :class="sparkleColorClass"
+        @mouseenter="prefetch"
+        @focus="prefetch"
+      >
+        <Icon icon="i-ph-sparkle-fill" class="size-3.5" />
+        <span class="text-xs">
+          {{ t('CONVERSATION.CAPTAIN_GENERATION.GENERATED_BY') }}
+        </span>
+      </button>
+      <template #content>
+        <div class="flex flex-col gap-4 p-4 w-80">
+          <span v-if="isLoading" class="text-xs text-n-slate-11">
+            {{ t('CONVERSATION.CAPTAIN_GENERATION.LOADING') }}
+          </span>
+          <span v-else-if="!session" class="text-xs text-n-slate-11">
+            {{ t('CONVERSATION.CAPTAIN_GENERATION.EMPTY') }}
+          </span>
+          <template v-else>
+            <div v-if="steps.length" class="flex flex-col gap-2">
+              <span class="text-xs font-medium text-n-slate-11">
+                {{ t('CONVERSATION.CAPTAIN_GENERATION.TIMELINE') }}
+              </span>
+              <div class="flex flex-col">
+                <div
+                  v-for="(step, index) in steps"
+                  :key="index"
+                  class="flex gap-2.5"
+                >
+                  <div class="flex flex-col items-center">
+                    <span
+                      class="flex items-center justify-center rounded-full size-5 bg-n-alpha-2 text-n-slate-11"
+                    >
+                      <Icon :icon="STEP_ICONS[step.type]" class="size-3" />
+                    </span>
+                    <span
+                      v-if="index < steps.length - 1"
+                      class="flex-1 w-px min-h-2 bg-n-weak"
+                    />
+                  </div>
+                  <div
+                    class="flex flex-col min-w-0 gap-0.5"
+                    :class="index < steps.length - 1 ? 'pb-3' : ''"
+                  >
+                    <I18nT
+                      :keypath="STEP_KEYPATHS[step.type]"
+                      tag="span"
+                      class="text-xs leading-5 text-n-slate-11"
+                    >
+                      <template #name>
+                        <span class="font-medium text-n-slate-12">
+                          {{ step.name }}
+                        </span>
+                      </template>
+                    </I18nT>
+                    <span
+                      v-if="step.detail"
+                      class="text-xs text-n-slate-11 break-words"
+                    >
+                      {{ step.detail }}
+                    </span>
+                  </div>
+                </div>
+              </div>
+            </div>
+            <div v-if="citations.length" class="flex flex-col gap-2">
+              <div class="flex items-baseline gap-1.5">
+                <span class="text-xs font-medium text-n-slate-11">
+                  {{ t('CONVERSATION.CAPTAIN_GENERATION.SOURCES') }}
+                </span>
+                <span class="text-xs text-n-slate-10">
+                  {{
+                    t(
+                      'CONVERSATION.CAPTAIN_GENERATION.SOURCES_SUMMARY',
+                      citations.length
+                    )
+                  }}
+                </span>
+              </div>
+              <ul class="flex flex-col gap-1 m-0 list-disc ps-4">
+                <li
+                  v-for="citation in citations"
+                  :key="citation.id"
+                  class="text-xs text-n-slate-12"
+                >
+                  <a
+                    v-if="citation.link"
+                    :href="citation.link"
+                    target="_blank"
+                    rel="noopener noreferrer"
+                    class="text-xs text-n-blue-11 hover:underline"
+                  >
+                    {{ citation.title || citation.link }}
+                  </a>
+                  <span v-else>{{ citation.title }}</span>
+                </li>
+              </ul>
+            </div>
+            <div v-if="reasoning" class="flex flex-col gap-2">
+              <span class="text-xs font-medium text-n-slate-11">
+                {{ t('CONVERSATION.CAPTAIN_GENERATION.REASONING') }}
+              </span>
+              <p class="m-0 text-xs leading-normal text-n-slate-12 break-words">
+                {{ reasoning }}
+              </p>
+            </div>
+            <span v-if="devDetails" class="text-xs text-n-slate-11">
+              {{ devDetails }}
+            </span>
+          </template>
+        </div>
+      </template>
+    </Popover>
+    <slot name="meta" />
+  </div>
+</template>
diff --git a/app/javascript/dashboard/components-next/message/bubbles/Base.vue b/app/javascript/dashboard/components-next/message/bubbles/Base.vue
index 457b583ea..e799bd755 100644
--- a/app/javascript/dashboard/components-next/message/bubbles/Base.vue
+++ b/app/javascript/dashboard/components-next/message/bubbles/Base.vue
@@ -2,6 +2,7 @@
 import { computed } from 'vue';
 
 import MessageMeta from '../MessageMeta.vue';
+import CaptainGenerationDetails from '../CaptainGenerationDetails.vue';
 
 import { emitter } from 'shared/helpers/mitt';
 import { useMessageContext } from '../provider.js';
@@ -9,16 +10,38 @@ import { useI18n } from 'vue-i18n';
 
 import MessageFormatter from 'shared/helpers/MessageFormatter.js';
 import { BUS_EVENTS } from 'shared/constants/busEvents';
-import { MESSAGE_VARIANTS, ORIENTATION } from '../constants';
+import { MESSAGE_VARIANTS, ORIENTATION, SENDER_TYPES } from '../constants';
 
 const props = defineProps({
   hideMeta: { type: Boolean, default: false },
 });
 
-const { variant, orientation, inReplyTo, shouldGroupWithNext } =
-  useMessageContext();
+const {
+  variant,
+  orientation,
+  inReplyTo,
+  shouldGroupWithNext,
+  id,
+  sender,
+  senderType,
+} = useMessageContext();
 const { t } = useI18n();
 
+const isCaptainMessage = computed(
+  () =>
+    (sender.value?.type ?? senderType.value) === SENDER_TYPES.CAPTAIN_ASSISTANT
+);
+
+const metaColorClass = computed(() =>
+  variant.value === MESSAGE_VARIANTS.PRIVATE
+    ? 'text-n-amber-12/50'
+    : 'text-n-slate-11'
+);
+
+const emailMetaClass = computed(() =>
+  variant.value === MESSAGE_VARIANTS.EMAIL ? 'px-3 pb-3' : ''
+);
+
 const varaintBaseMap = {
   [MESSAGE_VARIANTS.AGENT]: 'bg-n-solid-blue text-n-slate-12',
   [MESSAGE_VARIANTS.PRIVATE]:
@@ -114,16 +137,21 @@ const replyToPreview = computed(() => {
       />
     </div>
     <slot />
-    <MessageMeta
-      v-if="shouldShowMeta"
-      :class="[
-        flexOrientationClass,
-        variant === MESSAGE_VARIANTS.EMAIL ? 'px-3 pb-3' : '',
-        variant === MESSAGE_VARIANTS.PRIVATE
-          ? 'text-n-amber-12/50'
-          : 'text-n-slate-11',
-      ]"
-      class="mt-2"
-    />
+    <template v-if="shouldShowMeta">
+      <CaptainGenerationDetails
+        v-if="isCaptainMessage"
+        :message-id="id"
+        class="mt-2"
+      >
+        <template #meta>
+          <MessageMeta :class="[emailMetaClass, metaColorClass]" />
+        </template>
+      </CaptainGenerationDetails>
+      <MessageMeta
+        v-else
+        :class="[flexOrientationClass, emailMetaClass, metaColorClass]"
+        class="mt-2"
+      />
+    </template>
   </div>
 </template>
diff --git a/app/javascript/dashboard/i18n/locale/en/conversation.json b/app/javascript/dashboard/i18n/locale/en/conversation.json
index fe71b8974..f3c81615b 100644
--- a/app/javascript/dashboard/i18n/locale/en/conversation.json
+++ b/app/javascript/dashboard/i18n/locale/en/conversation.json
@@ -72,6 +72,20 @@
     "RATING_TITLE": "Rating",
     "FEEDBACK_TITLE": "Feedback",
     "REPLY_MESSAGE_NOT_FOUND": "Message not available",
+    "CAPTAIN_GENERATION": {
+      "TITLE": "How was this reply generated?",
+      "GENERATED_BY": "Generated by Captain",
+      "LOADING": "Loading details…",
+      "EMPTY": "No generation details available for this message.",
+      "TIMELINE": "Generation steps",
+      "STEP_TOOL": "Called {name}",
+      "STEP_HANDOFF": "Handed off to {name}",
+      "REASONING": "Reasoning",
+      "SOURCES": "Knowledge base",
+      "SOURCES_SUMMARY": "{count} result | {count} results",
+      "MODEL": "Generated with {model}",
+      "CREDITS": "Credits: {credits}"
+    },
     "CARD": {
       "SHOW_LABELS": "Show labels",
       "HIDE_LABELS": "Hide labels",
diff --git a/app/javascript/dashboard/store/captain/agentSessions.js b/app/javascript/dashboard/store/captain/agentSessions.js
new file mode 100644
index 000000000..e72d2e58c
--- /dev/null
+++ b/app/javascript/dashboard/store/captain/agentSessions.js
@@ -0,0 +1,62 @@
+import CaptainAgentSessionsAPI from 'dashboard/api/captain/agentSessions';
+import camelcaseKeys from 'camelcase-keys';
+
+const SET_SESSION = 'SET_SESSION';
+const SET_FETCHING = 'SET_FETCHING';
+
+// Session capture runs right after the message is broadcast (and well after,
+// for handoff notes created mid-run), so a 404 on a fresh message may just
+// mean the session isn't written yet. Skip caching those so a later
+// hover/click retries; older misses are permanent (V1 messages, failed runs).
+const RECENT_MESSAGE_WINDOW_SECONDS = 60;
+
+// Caches Captain agent-session metadata per message id. A missing session
+// (404) is cached as null so the UI shows an empty state without refetching.
+export default {
+  namespaced: true,
+  state: {
+    sessions: {},
+    fetchingIds: [],
+  },
+  getters: {
+    getSessionByMessageId: state => messageId => state.sessions[messageId],
+    isFetching: state => messageId => state.fetchingIds.includes(messageId),
+    hasFetched: state => messageId => messageId in state.sessions,
+  },
+  actions: {
+    fetch: async ({ state, commit }, { messageId, createdAt }) => {
+      if (messageId in state.sessions) return;
+      if (state.fetchingIds.includes(messageId)) return;
+
+      commit(SET_FETCHING, { messageId, isFetching: true });
+      try {
+        const { data } = await CaptainAgentSessionsAPI.show(messageId);
+        commit(SET_SESSION, {
+          messageId,
+          session: camelcaseKeys(data, { deep: true }),
+        });
+      } catch (error) {
+        const isRecentMessage =
+          createdAt &&
+          Date.now() / 1000 - createdAt < RECENT_MESSAGE_WINDOW_SECONDS;
+        // Only a 404 means "no session exists"; transient failures (5xx,
+        // network errors) stay uncached so a later hover retries.
+        if (error.response?.status === 404 && !isRecentMessage) {
+          commit(SET_SESSION, { messageId, session: null });
+        }
+      } finally {
+        commit(SET_FETCHING, { messageId, isFetching: false });
+      }
+    },
+  },
+  mutations: {
+    [SET_SESSION](state, { messageId, session }) {
+      state.sessions = { ...state.sessions, [messageId]: session };
+    },
+    [SET_FETCHING](state, { messageId, isFetching }) {
+      state.fetchingIds = isFetching
+        ? [...state.fetchingIds, messageId]
+        : state.fetchingIds.filter(id => id !== messageId);
+    },
+  },
+};
diff --git a/app/javascript/dashboard/store/index.js b/app/javascript/dashboard/store/index.js
index 23685bfad..d0c8e5002 100755
--- a/app/javascript/dashboard/store/index.js
+++ b/app/javascript/dashboard/store/index.js
@@ -50,6 +50,7 @@ import teamMembers from './modules/teamMembers';
 import teams from './modules/teams';
 import userNotificationSettings from './modules/userNotificationSettings';
 import webhooks from './modules/webhooks';
+import captainAgentSessions from './captain/agentSessions';
 import captainAssistants from './captain/assistant';
 import captainDocuments from './captain/document';
 import captainResponses from './captain/response';
@@ -115,6 +116,7 @@ export default createStore({
     teams,
     userNotificationSettings,
     webhooks,
+    captainAgentSessions,
     captainAssistants,
     captainDocuments,
     captainResponses,
diff --git a/config/routes.rb b/config/routes.rb
index dfdc23727..0bf6b40c8 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -76,6 +76,7 @@ Rails.application.routes.draw do
               resources :inboxes, only: [:index, :create, :destroy], param: :inbox_id
               resources :scenarios
             end
+            resources :agent_sessions, only: [:show]
             resources :assistant_responses
             resources :message_reports, only: [:create]
             resources :bulk_actions, only: [:create]
diff --git a/enterprise/app/controllers/api/v1/accounts/captain/agent_sessions_controller.rb b/enterprise/app/controllers/api/v1/accounts/captain/agent_sessions_controller.rb
new file mode 100644
index 000000000..f9163de04
--- /dev/null
+++ b/enterprise/app/controllers/api/v1/accounts/captain/agent_sessions_controller.rb
@@ -0,0 +1,25 @@
+class Api::V1::Accounts::Captain::AgentSessionsController < Api::V1::Accounts::BaseController
+  before_action :set_message
+  before_action :authorize_conversation
+
+  def show
+    @agent_session = Current.account.captain_agent_sessions.find_by(result_type: 'Message', result_id: @message.id)
+    return head :not_found if @agent_session.blank?
+
+    @citations = Current.account.captain_assistant_responses
+                        .where(id: @agent_session.faq_ids)
+                        .includes(:documentable)
+    @scenario_titles = Captain::Scenario.where(account_id: Current.account.id, id: @agent_session.scenario_ids)
+                                        .pluck(:id, :title).to_h
+  end
+
+  private
+
+  def set_message
+    @message = Current.account.messages.find(params[:id])
+  end
+
+  def authorize_conversation
+    authorize @message.conversation, :show?
+  end
+end
diff --git a/enterprise/app/services/captain/assistant/session_capture_service.rb b/enterprise/app/services/captain/assistant/session_capture_service.rb
index ceeb28210..816fe5355 100644
--- a/enterprise/app/services/captain/assistant/session_capture_service.rb
+++ b/enterprise/app/services/captain/assistant/session_capture_service.rb
@@ -22,13 +22,12 @@ class Captain::Assistant::SessionCaptureService
 
   def capture!
     model = @assistant.agent_model
-    metadata = context.dig(:state, :cw_metadata) || {}
 
     Captain::AgentSession.create!(
       assistant: @assistant,
       session_type: :assistant,
       subject: @conversation,
-      result: @result_message,
+      result: result_message,
       llm_model: "#{Llm::Models.provider_for(model)}-#{model}",
       credits_consumed: @credits_consumed,
       faq_ids: metadata[:faq_ids] || [],
@@ -44,6 +43,23 @@ class Captain::Assistant::SessionCaptureService
     @run_result.context || {}
   end
 
+  def metadata
+    @metadata ||= context.dig(:state, :cw_metadata) || {}
+  end
+
+  # On handoff, HandoffTool records the private reason note it created; the session
+  # attaches there so agents can inspect the generation path on the note itself.
+  def result_message
+    handoff_note || @result_message
+  end
+
+  def handoff_note
+    note_id = metadata[:handoff_note_id]
+    return if note_id.blank?
+
+    @conversation.messages.find_by(id: note_id)
+  end
+
   def scenario_ids
     ids = current_turn_history.filter_map do |message|
       next unless message[:role].to_s == 'assistant'
diff --git a/enterprise/app/views/api/v1/accounts/captain/agent_sessions/show.json.jbuilder b/enterprise/app/views/api/v1/accounts/captain/agent_sessions/show.json.jbuilder
new file mode 100644
index 000000000..1e1cd1d7d
--- /dev/null
+++ b/enterprise/app/views/api/v1/accounts/captain/agent_sessions/show.json.jbuilder
@@ -0,0 +1,18 @@
+json.id @agent_session.id
+json.message_id @agent_session.result_id
+json.llm_model @agent_session.llm_model
+json.credits_consumed @agent_session.credits_consumed
+json.run_context @agent_session.run_context.is_a?(Array) ? @agent_session.run_context : []
+json.citations @citations do |citation|
+  json.id citation.id
+  json.title citation.question
+  # display_url resolves uploaded PDFs to their blob URL; external_link holds a
+  # "PDF: ..." placeholder for those. Guard on scheme so placeholders render as
+  # plain text instead of dead anchors.
+  link = citation.documentable.is_a?(Captain::Document) ? citation.documentable.display_url : nil
+  json.link link&.match?(%r{\Ahttps?://}) ? link : nil
+end
+json.scenarios @scenario_titles do |id, title|
+  json.id id
+  json.title title
+end
diff --git a/enterprise/lib/captain/tools/handoff_tool.rb b/enterprise/lib/captain/tools/handoff_tool.rb
index d126840be..f3ca8b1fe 100644
--- a/enterprise/lib/captain/tools/handoff_tool.rb
+++ b/enterprise/lib/captain/tools/handoff_tool.rb
@@ -13,7 +13,7 @@ class Captain::Tools::HandoffTool < Captain::Tools::BasePublicTool
                    })
 
     # Use existing handoff mechanism from ResponseBuilderJob
-    trigger_handoff(conversation, reason)
+    trigger_handoff(tool_context, conversation, reason)
 
     "Conversation handed off to human support team#{" (Reason: #{reason})" if reason}"
   rescue StandardError => e
@@ -23,9 +23,9 @@ class Captain::Tools::HandoffTool < Captain::Tools::BasePublicTool
 
   private
 
-  def trigger_handoff(conversation, reason)
+  def trigger_handoff(tool_context, conversation, reason)
     # post the reason as a private note
-    conversation.messages.create!(
+    note = conversation.messages.create!(
       message_type: :outgoing,
       private: true,
       sender: @assistant,
@@ -34,6 +34,15 @@ class Captain::Tools::HandoffTool < Captain::Tools::BasePublicTool
       content: reason
     )
 
+    # Session capture attributes the run to this note so agents can inspect the
+    # generation path on the handoff reason instead of the canned follow-up message.
+    # A reason-less note has no content and never renders in the dashboard, so
+    # leave it unrecorded and let capture fall back to the follow-up message.
+    if reason.present?
+      metadata = tool_context.state[:cw_metadata] ||= {}
+      metadata[:handoff_note_id] = note.id
+    end
+
     # Trigger the bot handoff (sets status to open + dispatches events)
     conversation.bot_handoff!
 
diff --git a/spec/enterprise/controllers/api/v1/accounts/captain/agent_sessions_controller_spec.rb b/spec/enterprise/controllers/api/v1/accounts/captain/agent_sessions_controller_spec.rb
new file mode 100644
index 000000000..1444dc0a8
--- /dev/null
+++ b/spec/enterprise/controllers/api/v1/accounts/captain/agent_sessions_controller_spec.rb
@@ -0,0 +1,120 @@
+require 'rails_helper'
+
+RSpec.describe 'Api::V1::Accounts::Captain::AgentSessions', type: :request do
+  let(:account) { create(:account) }
+  let(:agent) { create(:user, account: account, role: :agent) }
+  let(:inbox) { create(:inbox, account: account) }
+  let(:conversation) { create(:conversation, account: account, inbox: inbox) }
+  let(:assistant) { create(:captain_assistant, account: account) }
+  let(:message) do
+    create(:message, account: account, conversation: conversation, message_type: :outgoing, sender: assistant)
+  end
+
+  before { create(:inbox_member, user: agent, inbox: inbox) }
+
+  def json_response
+    JSON.parse(response.body, symbolize_names: true)
+  end
+
+  describe 'GET /api/v1/accounts/:account_id/captain/agent_sessions/:id' do
+    context 'when it is an unauthenticated user' do
+      it 'returns unauthorized' do
+        get "/api/v1/accounts/#{account.id}/captain/agent_sessions/#{message.id}", as: :json
+
+        expect(response).to have_http_status(:unauthorized)
+      end
+    end
+
+    context 'when the message has an agent session' do
+      let(:document) { create(:captain_document, account: account, assistant: assistant) }
+      let(:documented_faq) do
+        create(:captain_assistant_response, account: account, assistant: assistant,
+                                            question: 'How do I reset my password?', documentable: document)
+      end
+      let(:plain_faq) do
+        create(:captain_assistant_response, account: account, assistant: assistant, question: 'How do I change my email?')
+      end
+      let(:pdf_document) do
+        create(:captain_document, account: account, assistant: assistant, external_link: nil,
+                                  pdf_file: Rack::Test::UploadedFile.new(Rails.root.join('spec/assets/sample.pdf'), 'application/pdf'))
+      end
+      let(:pdf_faq) do
+        create(:captain_assistant_response, account: account, assistant: assistant,
+                                            question: 'What are the pricing tiers?', documentable: pdf_document)
+      end
+      let(:scenario) { create(:captain_scenario, account: account, assistant: assistant, title: 'Refund flow') }
+      let(:run_context) do
+        [
+          { 'role' => 'user', 'content' => 'I want a refund' },
+          { 'role' => 'assistant', 'content' => '', 'agent_name' => 'Assistant',
+            'tool_calls' => [{ 'id' => 'call_1', 'name' => 'faq_lookup', 'arguments' => { 'query' => 'refund' } }] },
+          { 'role' => 'tool', 'content' => 'Refunds take 5 days', 'tool_call_id' => 'call_1' },
+          { 'role' => 'assistant', 'content' => 'Refunds take 5 days', 'agent_name' => "scenario_#{scenario.id}_refund_flow" }
+        ]
+      end
+      let!(:agent_session) do
+        create(:captain_agent_session, account: account, assistant: assistant,
+                                       subject: conversation, result: message,
+                                       llm_model: 'openai-gpt-5.2', credits_consumed: 1.0,
+                                       faq_ids: [documented_faq.id, plain_faq.id, pdf_faq.id, documented_faq.id + 100_000],
+                                       scenario_ids: [scenario.id],
+                                       run_context: run_context)
+      end
+
+      it 'returns the session with hydrated citations and scenarios' do
+        get "/api/v1/accounts/#{account.id}/captain/agent_sessions/#{message.id}",
+            headers: agent.create_new_auth_token, as: :json
+
+        expect(response).to have_http_status(:success)
+        aggregate_failures do
+          expect(json_response[:id]).to eq(agent_session.id)
+          expect(json_response[:message_id]).to eq(message.id)
+          expect(json_response[:llm_model]).to eq('openai-gpt-5.2')
+          expect(json_response[:credits_consumed]).to eq(1.0)
+          expect(json_response[:run_context].length).to eq(4)
+          expect(json_response[:run_context].second[:tool_calls].first[:arguments][:query]).to eq('refund')
+
+          citations = json_response[:citations].index_by { |citation| citation[:id] }
+          expect(citations.keys).to contain_exactly(documented_faq.id, plain_faq.id, pdf_faq.id)
+          expect(citations[documented_faq.id][:title]).to eq('How do I reset my password?')
+          expect(citations[documented_faq.id][:link]).to eq(document.external_link)
+          expect(citations[plain_faq.id][:link]).to be_nil
+          expect(pdf_document.external_link).to start_with('PDF:')
+          expect(citations[pdf_faq.id][:link]).to eq(pdf_document.display_url)
+          expect(citations[pdf_faq.id][:link]).to match(%r{\Ahttps?://})
+
+          expect(json_response[:scenarios]).to eq([{ id: scenario.id, title: 'Refund flow' }])
+        end
+      end
+
+      it 'does not allow an agent without access to the conversation' do
+        other_agent = create(:user, account: account, role: :agent)
+
+        get "/api/v1/accounts/#{account.id}/captain/agent_sessions/#{message.id}",
+            headers: other_agent.create_new_auth_token, as: :json
+
+        expect(response).to have_http_status(:unauthorized)
+      end
+    end
+
+    context 'when the message has no agent session' do
+      it 'returns not found' do
+        get "/api/v1/accounts/#{account.id}/captain/agent_sessions/#{message.id}",
+            headers: agent.create_new_auth_token, as: :json
+
+        expect(response).to have_http_status(:not_found)
+      end
+    end
+
+    context 'when the message does not belong to the account' do
+      it 'returns not found' do
+        other_message = create(:message)
+
+        get "/api/v1/accounts/#{account.id}/captain/agent_sessions/#{other_message.id}",
+            headers: agent.create_new_auth_token, as: :json
+
+        expect(response).to have_http_status(:not_found)
+      end
+    end
+  end
+end
diff --git a/spec/enterprise/jobs/captain/conversation/response_builder_job_spec.rb b/spec/enterprise/jobs/captain/conversation/response_builder_job_spec.rb
index eb1cb641c..08bb2a50d 100644
--- a/spec/enterprise/jobs/captain/conversation/response_builder_job_spec.rb
+++ b/spec/enterprise/jobs/captain/conversation/response_builder_job_spec.rb
@@ -561,6 +561,22 @@ RSpec.describe Captain::Conversation::ResponseBuilderJob, type: :job do
         expect(account.reload.usage_limits[:captain][:responses][:consumed]).to eq(0)
       end
 
+      it 'attributes the handoff session to the private reason note when the tool recorded one' do
+        handoff_note = create(:message, conversation: conversation, account: account, message_type: :outgoing,
+                                        private: true, sender: assistant, content: 'Needs a human')
+        run_context[:state][:cw_metadata][:handoff_note_id] = handoff_note.id
+        allow(mock_agent_runner_service).to receive(:generate_response) do
+          conversation.update!(status: :open)
+          { 'response' => 'Let me connect you', 'handoff_tool_called' => true }
+        end
+
+        described_class.perform_now(conversation, assistant)
+
+        session = Captain::AgentSession.last
+        expect(session.credits_consumed).to eq(0.0)
+        expect(session.result_id).to eq(handoff_note.id)
+      end
+
       it 'creates a zero-credit session when the handoff tool fired but failed to commit' do
         allow(mock_agent_runner_service).to receive(:generate_response).and_return({
                                                                                      'response' => 'I tried to hand off',
diff --git a/spec/enterprise/lib/captain/tools/handoff_tool_spec.rb b/spec/enterprise/lib/captain/tools/handoff_tool_spec.rb
index 492d24f32..db5ee462c 100644
--- a/spec/enterprise/lib/captain/tools/handoff_tool_spec.rb
+++ b/spec/enterprise/lib/captain/tools/handoff_tool_spec.rb
@@ -86,6 +86,12 @@ RSpec.describe Captain::Tools::HandoffTool, type: :model do
 
           tool.perform(tool_context, reason: reason)
         end
+
+        it 'records the handoff note id in the run state for session capture' do
+          tool.perform(tool_context, reason: 'Customer needs specialized support')
+
+          expect(tool_context.state[:cw_metadata][:handoff_note_id]).to eq(Message.last.id)
+        end
       end
 
       context 'without reason provided' do
@@ -107,6 +113,12 @@ RSpec.describe Captain::Tools::HandoffTool, type: :model do
 
           tool.perform(tool_context)
         end
+
+        it 'does not record a handoff note id since the empty note never renders' do
+          tool.perform(tool_context)
+
+          expect(tool_context.state[:cw_metadata]).to be_nil
+        end
       end
 
       context 'when handoff fails' do