diff --git a/src/config/config-misc.test.ts b/src/config/config-misc.test.ts
index bd9a05fea10..b463a6b50a3 100644
--- a/src/config/config-misc.test.ts
+++ b/src/config/config-misc.test.ts
@@ -212,6 +212,37 @@ describe("gateway.channelHealthCheckMinutes", () => {
       expect(res.issues[0]?.path).toBe("gateway.channelHealthCheckMinutes");
     }
   });
+
+  it("rejects stale thresholds shorter than the health check interval", () => {
+    const res = validateConfigObject({
+      gateway: {
+        channelHealthCheckMinutes: 5,
+        channelStaleEventThresholdMinutes: 4,
+      },
+    });
+    expect(res.ok).toBe(false);
+    if (!res.ok) {
+      expect(res.issues[0]?.path).toBe("gateway.channelStaleEventThresholdMinutes");
+    }
+  });
+
+  it("accepts stale thresholds that match or exceed the health check interval", () => {
+    const equal = validateConfigObject({
+      gateway: {
+        channelHealthCheckMinutes: 5,
+        channelStaleEventThresholdMinutes: 5,
+      },
+    });
+    expect(equal.ok).toBe(true);
+
+    const greater = validateConfigObject({
+      gateway: {
+        channelHealthCheckMinutes: 5,
+        channelStaleEventThresholdMinutes: 6,
+      },
+    });
+    expect(greater.ok).toBe(true);
+  });
 });
 
 describe("cron webhook schema", () => {
diff --git a/src/config/zod-schema.ts b/src/config/zod-schema.ts
index dac3e61f94c..e37132e5480 100644
--- a/src/config/zod-schema.ts
+++ b/src/config/zod-schema.ts
@@ -835,6 +835,21 @@ export const OpenClawSchema = z
           .optional(),
       })
       .strict()
+      .superRefine((gateway, ctx) => {
+        if (
+          gateway.channelStaleEventThresholdMinutes != null &&
+          gateway.channelHealthCheckMinutes != null &&
+          gateway.channelHealthCheckMinutes !== 0 &&
+          gateway.channelStaleEventThresholdMinutes < gateway.channelHealthCheckMinutes
+        ) {
+          ctx.addIssue({
+            code: z.ZodIssueCode.custom,
+            path: ["channelStaleEventThresholdMinutes"],
+            message:
+              "channelStaleEventThresholdMinutes should be >= channelHealthCheckMinutes to avoid delayed stale detection",
+          });
+        }
+      })
       .optional(),
     memory: MemorySchema,
     skills: z
diff --git a/src/gateway/server-channels.test.ts b/src/gateway/server-channels.test.ts
index 4627dc681fa..9d65dac1a18 100644
--- a/src/gateway/server-channels.test.ts
+++ b/src/gateway/server-channels.test.ts
@@ -235,4 +235,27 @@ describe("server-channels auto restart", () => {
 
     expect(manager.isHealthMonitorEnabled("discord", "router-d")).toBe(false);
   });
+
+  it("falls back to channel-level health monitor overrides when account resolution omits them", () => {
+    installTestRegistry(
+      createTestPlugin({
+        resolveAccount: () => ({
+          enabled: true,
+          configured: true,
+        }),
+      }),
+    );
+
+    const manager = createManager({
+      loadConfig: () => ({
+        channels: {
+          discord: {
+            healthMonitor: { enabled: false },
+          },
+        },
+      }),
+    });
+
+    expect(manager.isHealthMonitorEnabled("discord", DEFAULT_ACCOUNT_ID)).toBe(false);
+  });
 });
diff --git a/src/gateway/server-channels.ts b/src/gateway/server-channels.ts
index 853a7ea551c..dc6127687d8 100644
--- a/src/gateway/server-channels.ts
+++ b/src/gateway/server-channels.ts
@@ -131,11 +131,24 @@ export function createChannelManager(opts: ChannelManagerOptions): ChannelManage
         }
       | undefined;
     const accountOverride = resolvedAccount?.healthMonitor?.enabled;
+    const channelOverride = (
+      cfg.channels?.[channelId] as
+        | {
+            healthMonitor?: {
+              enabled?: boolean;
+            };
+          }
+        | undefined
+    )?.healthMonitor?.enabled;
 
     if (typeof accountOverride === "boolean") {
       return accountOverride;
     }
 
+    if (typeof channelOverride === "boolean") {
+      return channelOverride;
+    }
+
     return true;
   };