From 57134d2af2adf4b53f23b4cac3dd4caff7511fef Mon Sep 17 00:00:00 2001
From: Sakurasan <26715255+Sakurasan@users.noreply.github.com>
Date: Fri, 30 Oct 2026 01:21:39 +0800
Subject: [PATCH] =?UTF-8?q?fix:=20=E5=81=A5=E5=BA=B7=E6=8E=A2=E6=B5=8B?=
 =?UTF-8?q?=E5=AF=B9=20Anthropic=20=E6=B8=A0=E9=81=93=E8=A1=A5=E5=8F=91=20?=
 =?UTF-8?q?x-api-key=20=E4=B8=8E=20anthropic-version=20=E5=A4=B4?=
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官方 Anthropic API 只认 x-api-key，之前只发 Bearer 会让 Anthropic 渠道
持续探测失败被误进 cooldown、流量归零。两个认证头并存互不干扰。
---
 server/internal/channel/health.go | 9 +++++++++
 1 file changed, 9 insertions(+)

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 {