diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2b74db4cf16..c2c72156307 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -186,6 +186,7 @@ Docs: https://docs.openclaw.ai
 - Agents/model resolution: let explicit `openai-codex/gpt-5.4` selection prefer provider runtime metadata when it reports a larger context window, keeping configured Codex runs aligned with the live provider limits. (#62694) Thanks @ruclaw7.
 - Agents/model resolution: keep explicit-model runtime comparisons on the configured workspace plugin registry, so workspace-installed providers do not silently fall back to stale explicit metadata during runtime model lookup.
 - Providers/Z.AI: default onboarding and endpoint detection to GLM-5.1 instead of GLM-5. (#61998) Thanks @serg0x.
+- Cron/isolated: resolve auth profiles without treating every isolated run as a brand-new auth session, so profile-based providers (for example OpenRouter) keep a stable credential choice instead of rotating or ignoring stored keys. (#62783) Thanks @neeravmakwana.
 
 ## 2026.4.5
 
diff --git a/src/cron/isolated-agent.isolated-auth-session-flag.test.ts b/src/cron/isolated-agent.isolated-auth-session-flag.test.ts
new file mode 100644
index 00000000000..00050dc61b2
--- /dev/null
+++ b/src/cron/isolated-agent.isolated-auth-session-flag.test.ts
@@ -0,0 +1,88 @@
+import "./isolated-agent.mocks.js";
+import fs from "node:fs/promises";
+import path from "node:path";
+import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+import * as sessionOverride from "../agents/auth-profiles/session-override.js";
+import { runEmbeddedPiAgent } from "../agents/pi-embedded.js";
+import { createCliDeps } from "./isolated-agent.delivery.test-helpers.js";
+import { runCronIsolatedAgentTurn } from "./isolated-agent.js";
+import {
+  makeCfg,
+  makeJob,
+  withTempCronHome,
+  writeSessionStore,
+} from "./isolated-agent.test-harness.js";
+import { setupIsolatedAgentTurnMocks } from "./isolated-agent.test-setup.js";
+
+describe("isolated cron resolveSessionAuthProfileOverride isNewSession (#62783)", () => {
+  beforeEach(() => {
+    setupIsolatedAgentTurnMocks({ fast: true });
+  });
+
+  afterEach(() => {
+    vi.restoreAllMocks();
+  });
+
+  it("passes isNewSession=false when sessionTarget is isolated", async () => {
+    const spy = vi.spyOn(sessionOverride, "resolveSessionAuthProfileOverride");
+    spy.mockResolvedValue("openrouter:default");
+
+    await withTempCronHome(async (home) => {
+      const storePath = await writeSessionStore(home, { lastProvider: "webchat", lastTo: "" });
+      const agentDir = path.join(home, ".openclaw", "agents", "main", "agent");
+      await fs.mkdir(agentDir, { recursive: true });
+      await fs.writeFile(
+        path.join(agentDir, "auth-profiles.json"),
+        JSON.stringify({
+          version: 1,
+          profiles: {
+            "openrouter:default": {
+              type: "api_key",
+              provider: "openrouter",
+              key: "sk-or-test-key",
+            },
+          },
+          order: { openrouter: ["openrouter:default"] },
+        }),
+        "utf-8",
+      );
+
+      vi.mocked(runEmbeddedPiAgent).mockResolvedValue({
+        payloads: [{ text: "ok" }],
+        meta: {
+          durationMs: 1,
+          agentMeta: { sessionId: "s", provider: "openrouter", model: "kimi-k2.5" },
+        },
+      });
+
+      const cfg = makeCfg(home, storePath, {
+        agents: {
+          defaults: {
+            model: { primary: "openrouter/moonshotai/kimi-k2.5" },
+            workspace: path.join(home, "openclaw"),
+          },
+        },
+      });
+
+      await runCronIsolatedAgentTurn({
+        cfg,
+        deps: createCliDeps(),
+        job: {
+          ...makeJob({ kind: "agentTurn", message: "hi" }),
+          sessionTarget: "isolated",
+          delivery: { mode: "none" },
+        },
+        message: "hi",
+        sessionKey: "cron:auth-flag-1",
+        lane: "cron",
+      });
+    });
+
+    const openRouterCall = spy.mock.calls.find((c) => c[0]?.provider === "openrouter");
+    expect(
+      openRouterCall,
+      "resolveSessionAuthProfileOverride was not called with provider openrouter",
+    ).toBeDefined();
+    expect(openRouterCall?.[0]?.isNewSession).toBe(false);
+  });
+});
diff --git a/src/cron/isolated-agent/run.ts b/src/cron/isolated-agent/run.ts
index 2ef274a85ef..f91c73d9ee5 100644
--- a/src/cron/isolated-agent/run.ts
+++ b/src/cron/isolated-agent/run.ts
@@ -409,7 +409,6 @@ async function prepareCronRunContext(params: {
   } catch (err) {
     logWarn(`[cron:${input.job.id}] Failed to persist pre-run session entry: ${String(err)}`);
   }
-
   const authProfileId = await resolveSessionAuthProfileOverride({
     cfg: cfgWithAgentDefaults,
     provider,
@@ -418,7 +417,7 @@ async function prepareCronRunContext(params: {
     sessionStore: cronSession.store,
     sessionKey: agentSessionKey,
     storePath: cronSession.storePath,
-    isNewSession: cronSession.isNewSession,
+    isNewSession: cronSession.isNewSession && input.job.sessionTarget !== "isolated",
   });
   const liveSelection: CronLiveSelection = {
     provider,