diff --git a/scripts/kanban_api.py b/scripts/kanban_api.py
index c0afe8d..5ae58ca 100644
--- a/scripts/kanban_api.py
+++ b/scripts/kanban_api.py
@@ -17,6 +17,29 @@ def db():
     return sqlite3.connect(KANBAN_DB)
 
 
+def _fmt_ts(v):
+    """统一时间格式：epoch 或 ISO 字符串 → ISO 8601 字符串。
+    DB 存储以 epoch 为主（CLI 写入），历史数据有少量 ISO 混存（半路接入），
+    输出层统一成 ISO，调用方无需感知存储格式差异。"""
+    if v is None:
+        return None
+    if isinstance(v, (int, float)):
+        try:
+            return datetime.fromtimestamp(int(v)).strftime("%Y-%m-%dT%H:%M:%S")
+        except (OverflowError, OSError, ValueError):
+            return str(v)
+    s = str(v)
+    try:
+        # 已带 T 的 ISO 直接返回；纯数字字符串按 epoch 转
+        if "T" in s:
+            return s[:19]
+        if s.isdigit():
+            return datetime.fromtimestamp(int(s)).strftime("%Y-%m-%dT%H:%M:%S")
+    except (OverflowError, OSError, ValueError):
+        pass
+    return s
+
+
 class KanbanAPI(http.server.BaseHTTPRequestHandler):
     def _json(self, data, status=200):
         self.send_response(status)
@@ -37,6 +60,7 @@ class KanbanAPI(http.server.BaseHTTPRequestHandler):
             title = body.get("title", "")
             assignee = body.get("assignee", "")
             body_text = body.get("body", "")
+            created_by = body.get("created_by", "") or body.get("author", "")
             if not title:
                 return self._json({"error": "title required"}, 400)
 
@@ -47,6 +71,8 @@ class KanbanAPI(http.server.BaseHTTPRequestHandler):
                 cmd += ["--assignee", assignee]
             if body_text:
                 cmd += ["--body", body_text]
+            if created_by:
+                cmd += ["--created-by", created_by]
             r = subprocess.run(cmd, capture_output=True, text=True, timeout=30)
 
             if r.returncode != 0:
@@ -66,6 +92,7 @@ class KanbanAPI(http.server.BaseHTTPRequestHandler):
             title = body.get("title", "")
             assignee = body.get("assignee", "")
             body_text = body.get("body", "")
+            created_by = body.get("created_by", "") or body.get("author", "")
             if not title:
                 return self._json({"error": "title required"}, 400)
 
@@ -75,6 +102,8 @@ class KanbanAPI(http.server.BaseHTTPRequestHandler):
                 cmd += ["--assignee", assignee]
             if body_text:
                 cmd += ["--body", body_text]
+            if created_by:
+                cmd += ["--created-by", created_by]
             r = subprocess.run(cmd, capture_output=True, text=True, timeout=30)
             if r.returncode != 0:
                 return self._json({"error": r.stderr.strip()}, 500)
@@ -132,7 +161,7 @@ class KanbanAPI(http.server.BaseHTTPRequestHandler):
             for r in rows:
                 tasks.append({
                     "id": r[0], "title": r[1], "body": r[2], "status": r[3],
-                    "assignee": r[4], "created_by": r[5], "created_at": r[6]
+                    "assignee": r[4], "created_by": r[5], "created_at": _fmt_ts(r[6])
                 })
             return self._json({"tasks": tasks})
 
@@ -208,7 +237,7 @@ class KanbanAPI(http.server.BaseHTTPRequestHandler):
             return self._json({
                 "id": row[0], "title": row[1], "body": row[2],
                 "status": row[3], "assignee": row[4],
-                "created_by": row[5], "created_at": row[6]
+                "created_by": row[5], "created_at": _fmt_ts(row[6])
             })
 
         else: