diff --git a/src/api.js b/src/api.js
index d6970e9..75b5c7c 100644
--- a/src/api.js
+++ b/src/api.js
@@ -594,6 +594,17 @@ export const sendAgentCommand  = (agent, action, params={}) => apiPost('/api/age
 export const approveAgentTask  = (agent, task_id, approved, feedback='') => apiPost('/api/agent-office/approve', { agent, task_id, approved, feedback });
 export const getAgentStates    = ()           => apiGet('/api/agent-office/states');
 export const getActivityFeed   = (limit=50, offset=0) => apiGet(`/api/agent-office/activity?limit=${limit}&offset=${offset}`);
+// 횡단 오버사이트 타임라인용 — 빈 값은 쿼리에서 제외(백엔드 브랜치 선택).
+export const agentActivity = ({ agent_id, type, status, days, limit = 30, offset = 0 } = {}) => {
+  const p = new URLSearchParams();
+  if (agent_id) p.set('agent_id', agent_id);
+  if (type) p.set('type', type);
+  if (status) p.set('status', status);
+  if (days) p.set('days', String(days));
+  p.set('limit', String(limit));
+  p.set('offset', String(offset));
+  return apiGet(`/api/agent-office/activity?${p.toString()}`);
+};
 export const getAgentTokenUsage = (id, days=1) => apiGet(`/api/agent-office/agents/${id}/token-usage?days=${days}`);
 
 // --- Lotto Briefing ---