diff --git a/extensions/feishu/src/monitor.ts b/extensions/feishu/src/monitor.ts
index ce782cb615c..e71a4316b4c 100644
--- a/extensions/feishu/src/monitor.ts
+++ b/extensions/feishu/src/monitor.ts
@@ -335,6 +335,7 @@ type MonitorAccountParams = {
   runtime?: RuntimeEnv;
   abortSignal?: AbortSignal;
   botOpenId?: string;
+  botOpenIdPrefetched?: boolean;
 };
 
 /**
@@ -346,7 +347,7 @@ async function monitorSingleAccount(params: MonitorAccountParams): Promise<void>
   const log = runtime?.log ?? console.log;
 
   // Fetch bot open_id
-  const botOpenId = params.botOpenId ?? (await fetchBotOpenId(account));
+  const botOpenId = params.botOpenIdPrefetched ? params.botOpenId : await fetchBotOpenId(account);
   botOpenIds.set(accountId, botOpenId ?? "");
   log(`feishu[${accountId}]: bot open_id resolved: ${botOpenId ?? "unknown"}`);
 
@@ -558,6 +559,7 @@ export async function monitorFeishuProvider(opts: MonitorFeishuOpts = {}): Promi
         runtime: opts.runtime,
         abortSignal: opts.abortSignal,
         botOpenId,
+        botOpenIdPrefetched: true,
       }),
     );
   }
diff --git a/extensions/feishu/src/monitor.webhook-security.test.ts b/extensions/feishu/src/monitor.webhook-security.test.ts
index 53bb7c739d4..586cc465e93 100644
--- a/extensions/feishu/src/monitor.webhook-security.test.ts
+++ b/extensions/feishu/src/monitor.webhook-security.test.ts
@@ -263,4 +263,40 @@ describe("Feishu webhook security hardening", () => {
       await monitorPromise;
     }
   });
+
+  it("does not refetch bot info after a failed sequential preflight", async () => {
+    const started: string[] = [];
+    let releaseBetaProbe!: () => void;
+    const betaProbeReleased = new Promise<void>((resolve) => {
+      releaseBetaProbe = () => resolve();
+    });
+
+    probeFeishuMock.mockImplementation(async (account: { accountId: string }) => {
+      started.push(account.accountId);
+      if (account.accountId === "alpha") {
+        return { ok: false };
+      }
+      await betaProbeReleased;
+      return { ok: true, botOpenId: `bot_${account.accountId}` };
+    });
+
+    const abortController = new AbortController();
+    const monitorPromise = monitorFeishuProvider({
+      config: buildMultiAccountWebsocketConfig(["alpha", "beta"]),
+      abortSignal: abortController.signal,
+    });
+
+    try {
+      await Promise.resolve();
+      await Promise.resolve();
+      await Promise.resolve();
+
+      expect(started).toEqual(["alpha", "beta"]);
+      expect(started.filter((accountId) => accountId === "alpha")).toHaveLength(1);
+    } finally {
+      releaseBetaProbe();
+      abortController.abort();
+      await monitorPromise;
+    }
+  });
 });