diff --git a/src/commands/agents.command-shared.ts b/src/commands/agents.command-shared.ts
index 8b69f50070d..4597bd9d86a 100644
--- a/src/commands/agents.command-shared.ts
+++ b/src/commands/agents.command-shared.ts
@@ -1,3 +1,4 @@
+import { resolveDefaultAgentId } from "../agents/agent-scope.js";
 import { resolveStorePath, updateSessionStore } from "../config/sessions.js";
 import type { OpenClawConfig } from "../config/types.openclaw.js";
 import { resolveStoredSessionOwnerAgentId } from "../gateway/session-store-key.js";
@@ -28,13 +29,18 @@ export async function purgeAgentSessionStoreEntries(
 ): Promise<void> {
   try {
     const normalizedAgentId = normalizeAgentId(agentId);
+    const storeConfig = cfg.session?.store;
+    const storeAgentId =
+      typeof storeConfig === "string" && storeConfig.includes("{agentId}")
+        ? normalizedAgentId
+        : normalizeAgentId(resolveDefaultAgentId(cfg));
     const storePath = resolveStorePath(cfg.session?.store, { agentId: normalizedAgentId });
     await updateSessionStore(storePath, (store) => {
       for (const key of Object.keys(store)) {
         if (
           resolveStoredSessionOwnerAgentId({
             cfg,
-            agentId: normalizedAgentId,
+            agentId: storeAgentId,
             sessionKey: key,
           }) === normalizedAgentId
         ) {
diff --git a/src/commands/agents.delete.test.ts b/src/commands/agents.delete.test.ts
index 605dd5c6e5d..9492adfd1ea 100644
--- a/src/commands/agents.delete.test.ts
+++ b/src/commands/agents.delete.test.ts
@@ -116,4 +116,43 @@ describe("agents delete command", () => {
       });
     });
   });
+
+  it("preserves shared-store legacy default keys when deleting another agent", async () => {
+    await withStateDirEnv("openclaw-agents-delete-shared-store-", async ({ stateDir }) => {
+      const cfg: OpenClawConfig = {
+        session: { store: path.join(stateDir, "sessions.json") },
+        agents: {
+          list: [
+            { id: "main", default: true, workspace: path.join(stateDir, "workspace-main") },
+            { id: "ops", workspace: path.join(stateDir, "workspace-ops") },
+          ],
+        },
+      };
+      const storePath = resolveStorePath(cfg.session?.store, { agentId: "ops" });
+      await saveSessionStore(storePath, {
+        main: { sessionId: "sess-main", updatedAt: 1 },
+        "discord:direct:u1": { sessionId: "sess-main-direct", updatedAt: 2 },
+        "agent:ops:main": { sessionId: "sess-ops-main", updatedAt: 3 },
+        "agent:ops:discord:direct:u2": { sessionId: "sess-ops-direct", updatedAt: 4 },
+      });
+      await fs.mkdir(path.join(stateDir, "workspace-ops"), { recursive: true });
+      await fs.mkdir(path.join(stateDir, "agents", "ops", "agent"), { recursive: true });
+
+      configMocks.readConfigFileSnapshot.mockResolvedValue({
+        ...baseConfigSnapshot,
+        config: cfg,
+        runtimeConfig: cfg,
+        sourceConfig: cfg,
+        resolved: cfg,
+      });
+
+      await agentsDeleteCommand({ id: "ops", force: true, json: true }, runtime);
+
+      expect(runtime.exit).not.toHaveBeenCalled();
+      expect(loadSessionStore(storePath, { skipCache: true })).toEqual({
+        main: { sessionId: "sess-main", updatedAt: 1 },
+        "discord:direct:u1": { sessionId: "sess-main-direct", updatedAt: 2 },
+      });
+    });
+  });
 });