diff --git a/hive-agent/src/events.rs b/hive-agent/src/events.rs
index 0b50c828..1d2538ec 100644
--- a/hive-agent/src/events.rs
+++ b/hive-agent/src/events.rs
@@ -680,7 +680,7 @@ impl Bus {
     /// after a core bounce) went silent. Emitted every degraded turn on
     /// purpose: whether it persists across fresh turns is the signal that
     /// picks the real fix.
-    pub fn observe_mcp_health(&self, v: &serde_json::Value) {
+    pub(crate) fn observe_mcp_health(&self, v: &serde_json::Value) {
         if v.get("type").and_then(|t| t.as_str()) != Some("system")
             || v.get("subtype").and_then(|s| s.as_str()) != Some("init")
         {