diff --git a/app/services/monitoring.py b/app/services/monitoring.py
index 07055a4..df053fa 100644
--- a/app/services/monitoring.py
+++ b/app/services/monitoring.py
@@ -25,6 +25,51 @@ def _parse_credential(raw: str) -> Dict[str, Any]:
     return {'api_key': raw}
 
 
+def _parse_reset_at(value) -> datetime | None:
+    if not value:
+        return None
+    if isinstance(value, datetime):
+        return value
+    if isinstance(value, (int, float)):
+        return datetime.fromtimestamp(value, tz=timezone.utc)
+    if isinstance(value, str):
+        try:
+            return datetime.fromisoformat(value.replace('Z', '+00:00'))
+        except Exception:
+            return None
+    return None
+
+
+def _normalize_usage_payload(payload: Dict[str, Any]) -> Dict[str, Any]:
+    used = payload.get('used') or payload.get('usage') or payload.get('consumed') or payload.get('total_usage')
+    limit = payload.get('limit') or payload.get('quota') or payload.get('hard_limit') or payload.get('total')
+    remaining = payload.get('remain') or payload.get('remaining') or payload.get('left')
+    usage_pct = payload.get('usage_pct') or payload.get('percent') or payload.get('usage_percent')
+    window_label = payload.get('window') or payload.get('window_label')
+    reset_at = payload.get('reset_at') or payload.get('reset_time') or payload.get('reset')
+
+    if used is None and remaining is not None and limit is not None:
+        try:
+            used = float(limit) - float(remaining)
+        except Exception:
+            pass
+
+    if usage_pct is None and used is not None and limit:
+        try:
+            usage_pct = round(float(used) / float(limit) * 100, 2)
+        except Exception:
+            pass
+
+    return {
+        'window_label': window_label,
+        'used': used,
+        'limit': limit,
+        'usage_pct': usage_pct,
+        'reset_at': _parse_reset_at(reset_at),
+        'raw': payload,
+    }
+
+
 def get_issue_stats_cached(db: Session, ttl_seconds: int = 1800):
     key = 'issue_stats_24h'
     now = _now()
@@ -78,6 +123,8 @@ def test_provider_connection(provider: str, credential: str):
             r = requests.get('https://api.anthropic.com/v1/models', headers=_provider_headers(provider, key, info), timeout=12)
             return r.status_code == 200, f'status={r.status_code}'
         usage_url = info.get('usage_url') or info.get('test_url')
+        if provider == 'kimi' and not usage_url:
+            usage_url = 'https://www.kimi.com/api/user/usage'
         if usage_url:
             r = requests.get(usage_url, headers=_provider_headers(provider, key, info), timeout=12)
             return r.status_code < 500, f'status={r.status_code}'
@@ -130,15 +177,37 @@ def _anthropic_usage(credential: str) -> Tuple[str, Dict[str, Any]]:
     if r.status_code != 200:
         return 'error', {'error': f'usage:{r.status_code}', 'raw': r.text}
     payload = r.json()
-    # Try to normalize
-    return 'ok', {
-        'window_label': payload.get('window') or payload.get('window_label'),
-        'used': payload.get('used'),
-        'limit': payload.get('limit'),
-        'usage_pct': payload.get('usage_pct'),
-        'reset_at': None,
-        'raw': payload,
-    }
+    if isinstance(payload, dict) and 'data' in payload and isinstance(payload['data'], dict):
+        payload = payload['data']
+    return 'ok', _normalize_usage_payload(payload)
+
+
+def _kimi_usage(credential: str) -> Tuple[str, Dict[str, Any]]:
+    info = _parse_credential(credential)
+    key = info.get('api_key') or credential
+    usage_url = info.get('usage_url') or 'https://www.kimi.com/api/user/usage'
+    r = requests.get(usage_url, headers=_provider_headers('kimi', key, info), timeout=12)
+    if r.status_code != 200:
+        return 'error', {'error': f'usage:{r.status_code}', 'raw': r.text}
+    payload = r.json()
+    if isinstance(payload, dict) and 'data' in payload and isinstance(payload['data'], dict):
+        payload = payload['data']
+    return 'ok', _normalize_usage_payload(payload)
+
+
+def _minimax_usage(credential: str) -> Tuple[str, Dict[str, Any]]:
+    info = _parse_credential(credential)
+    key = info.get('api_key') or credential
+    usage_url = info.get('usage_url')
+    if not usage_url:
+        return 'unsupported', {'error': 'minimax usage API not configured'}
+    r = requests.get(usage_url, headers=_provider_headers('minimax', key, info), timeout=12)
+    if r.status_code != 200:
+        return 'error', {'error': f'usage:{r.status_code}', 'raw': r.text}
+    payload = r.json()
+    if isinstance(payload, dict) and 'data' in payload and isinstance(payload['data'], dict):
+        payload = payload['data']
+    return 'ok', _normalize_usage_payload(payload)
 
 
 def _generic_usage(provider: str, credential: str) -> Tuple[str, Dict[str, Any]]:
@@ -151,14 +220,7 @@ def _generic_usage(provider: str, credential: str) -> Tuple[str, Dict[str, Any]]
     if r.status_code != 200:
         return 'error', {'error': f'usage:{r.status_code}', 'raw': r.text}
     payload = r.json()
-    return 'ok', {
-        'window_label': payload.get('window') or payload.get('window_label'),
-        'used': payload.get('used'),
-        'limit': payload.get('limit'),
-        'usage_pct': payload.get('usage_pct'),
-        'reset_at': None,
-        'raw': payload,
-    }
+    return 'ok', _normalize_usage_payload(payload)
 
 
 def refresh_provider_usage_once(db: Session):
@@ -171,7 +233,11 @@ def refresh_provider_usage_once(db: Session):
             status, payload = _openai_usage(a.credential)
         elif a.provider == 'anthropic':
             status, payload = _anthropic_usage(a.credential)
-        elif a.provider in {'minimax', 'kimi', 'qwen'}:
+        elif a.provider == 'kimi':
+            status, payload = _kimi_usage(a.credential)
+        elif a.provider == 'minimax':
+            status, payload = _minimax_usage(a.credential)
+        elif a.provider == 'qwen':
             status, payload = _generic_usage(a.provider, a.credential)
         else:
             ok, msg = test_provider_connection(a.provider, a.credential)
diff --git a/docs/monitor-provider-credentials.md b/docs/monitor-provider-credentials.md
index 0eb4c3e..dad5244 100644
--- a/docs/monitor-provider-credentials.md
+++ b/docs/monitor-provider-credentials.md
@@ -53,3 +53,11 @@
   "auth_scheme": "Bearer"
 }
 ```
+
+## Kimi
+推荐 usage_url: https://www.kimi.com/api/user/usage  
+Authorization: Bearer <API_KEY>
+
+## Minimax
+推荐 usage_url: https://platform.minimax.io/v1/api/openplatform/coding_plan/remains?GroupId=YOUR_GROUP_ID  
+Authorization: Bearer <API_KEY>