diff --git a/app/main.py b/app/main.py
index dc24c33..169e9d9 100644
--- a/app/main.py
+++ b/app/main.py
@@ -536,6 +536,31 @@ def api_check(model_id: str):
     }
 
 
+@app.get("/api/checks/{model_id:path}")
+def api_checks(model_id: str):
+    """Все проверки модели за период — для дропдауна с деталями ошибок."""
+    limit = int(os.environ.get("CHECKS_LIMIT", "100"))
+    db = get_db()
+    rows = db.execute(
+        "SELECT ok, latency_ms, checked_at, error FROM checks "
+        "WHERE model_id=? ORDER BY checked_at DESC LIMIT ?",
+        (model_id, limit),
+    ).fetchall()
+    db.close()
+    return {
+        "model_id": model_id,
+        "checks": [
+            {
+                "ok": bool(r["ok"]),
+                "latency_ms": r["latency_ms"],
+                "checked_at": r["checked_at"],
+                "error": r["error"],
+            }
+            for r in rows
+        ],
+    }
+
+
 @app.get("/", response_class=HTMLResponse)
 def index():
     with open("/app/app/static/index.html") as f:
diff --git a/app/static/index.html b/app/static/index.html
index 6b5683c..a6f8034 100644
--- a/app/static/index.html
+++ b/app/static/index.html
@@ -363,6 +363,7 @@ function renderRow(m) {
     <td>${statusCell(m.last_ok)}</td>
     <td>${uptimeCell(m.uptime_pct, m.history)}</td>
     <td><button class="check-btn" onclick="checkOne('${m.id}', this)">▶ Тест</button></td>
+    <td><button class="check-btn" onclick="openCheckHistory('${m.id}', this)">📋 Лог</button></td>
   </tr>`;
 }
 
@@ -487,6 +488,16 @@ async function checkOne(modelId, btn) {
   }
 }
 
+async function openCheckHistory(modelId, btn) {
+  const res = await fetch(`/api/checks/${encodeURIComponent(modelId)}`);
+  const data = await res.json();
+  const idx = allData.findIndex(m => m.id === modelId);
+  if (idx >= 0) {
+    allData[idx].history = (data.checks || []).map(c => ({ ok: c.ok, latency_ms: c.latency_ms, at: c.checked_at, error: c.error }));
+  }
+  applyFilters();
+}
+
 document.getElementById('btn-refresh').addEventListener('click', loadData);
 document.getElementById('btn-sync').addEventListener('click', async () => {
   const btn = document.getElementById('btn-sync');