diff --git a/server/internal/channel/health.go b/server/internal/channel/health.go
index 648b45c..1cc71ac 100644
--- a/server/internal/channel/health.go
+++ b/server/internal/channel/health.go
@@ -86,6 +86,15 @@ func (h *HealthMonitor) probe(ch *store.Channel) {
 	req, _ := http.NewRequest(http.MethodGet, url, nil)
 	req.Header.Set("Authorization", "Bearer "+key)
 	req.Header.Set("Accept", "application/json")
+	// Anthropic 官方 API 只认 x-api-key（Bearer 被忽略），探测必须带上才不会误判不健康。
+	// 两个头同时发：官方 API 忽略 Bearer，OpenAI 兼容渠道忽略 x-api-key，互不干扰。
+	for _, f := range ch.FormatsEffective() {
+		if f == store.FormatMessages {
+			req.Header.Set("x-api-key", key)
+			req.Header.Set("anthropic-version", "2023-06-01")
+			break
+		}
+	}
 	resp, err := h.hc.Do(req)
 	ok := err == nil && resp.StatusCode >= 200 && resp.StatusCode < 300
 	if resp != nil {