diff --git a/CHANGELOG.md b/CHANGELOG.md
index e80e2c34ce4..6bc7bf6f07f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -47,6 +47,7 @@ Docs: https://docs.openclaw.ai
 - Telegram/exec approvals: reject `/approve` commands aimed at other bots, keep deterministic approval prompts visible when tool-result delivery fails, and stop resolved exact IDs from matching other pending approvals by prefix. (#37233) Thanks @huntharo.
 - Control UI/Sessions: restore single-column session table collapse on narrow viewport or container widths by moving the responsive table override next to the base grid rule and enabling inline-size container queries. (#12175) Thanks @benjipeng.
 - Telegram/final preview delivery: split active preview lifecycle from cleanup retention so missing archived preview edits avoid duplicate fallback sends without clearing the live preview or blocking later in-place finalization. (#41662) thanks @hougangdev.
+- Cron/state errors: record `lastErrorReason` in cron job state and keep the gateway schema aligned with the full failover-reason set, including regression coverage for protocol conformance. (#14382) thanks @futuremind2026.
 
 ## 2026.3.8
 
diff --git a/src/cron/cron-protocol-conformance.test.ts b/src/cron/cron-protocol-conformance.test.ts
index 51fe8f4767c..698f5e0038d 100644
--- a/src/cron/cron-protocol-conformance.test.ts
+++ b/src/cron/cron-protocol-conformance.test.ts
@@ -2,7 +2,7 @@ import fs from "node:fs/promises";
 import path from "node:path";
 import { describe, expect, it } from "vitest";
 import { MACOS_APP_SOURCES_DIR } from "../compat/legacy-names.js";
-import { CronDeliverySchema } from "../gateway/protocol/schema.js";
+import { CronDeliverySchema, CronJobStateSchema } from "../gateway/protocol/schema.js";
 
 type SchemaLike = {
   anyOf?: Array<SchemaLike>;
@@ -29,6 +29,16 @@ function extractDeliveryModes(schema: SchemaLike): string[] {
   return Array.from(new Set(unionModes));
 }
 
+function extractConstUnionValues(schema: SchemaLike): string[] {
+  return Array.from(
+    new Set(
+      (schema.anyOf ?? [])
+        .map((entry) => entry?.const)
+        .filter((value): value is string => typeof value === "string"),
+    ),
+  );
+}
+
 const UI_FILES = ["ui/src/ui/types.ts", "ui/src/ui/ui-types.ts", "ui/src/ui/views/cron.ts"];
 
 const SWIFT_MODEL_CANDIDATES = [`${MACOS_APP_SOURCES_DIR}/CronModels.swift`];
@@ -88,4 +98,19 @@ describe("cron protocol conformance", () => {
     expect(swift.includes("struct CronSchedulerStatus")).toBe(true);
     expect(swift.includes("let jobs:")).toBe(true);
   });
+
+  it("cron job state schema keeps the full failover reason set", () => {
+    const properties = (CronJobStateSchema as SchemaLike).properties ?? {};
+    const lastErrorReason = properties.lastErrorReason as SchemaLike | undefined;
+    expect(lastErrorReason).toBeDefined();
+    expect(extractConstUnionValues(lastErrorReason ?? {})).toEqual([
+      "auth",
+      "format",
+      "rate_limit",
+      "billing",
+      "timeout",
+      "model_not_found",
+      "unknown",
+    ]);
+  });
 });
diff --git a/src/cron/service/timer.ts b/src/cron/service/timer.ts
index 5320ffdf526..e12c4ae38e7 100644
--- a/src/cron/service/timer.ts
+++ b/src/cron/service/timer.ts
@@ -1,3 +1,4 @@
+import { resolveFailoverReasonFromError } from "../../agents/failover-error.js";
 import type { CronConfig, CronRetryOn } from "../../config/types.cron.js";
 import type { HeartbeatRunResult } from "../../infra/heartbeat-wake.js";
 import { DEFAULT_AGENT_ID } from "../../routing/session-key.js";
@@ -322,6 +323,10 @@ export function applyJobResult(
   job.state.lastStatus = result.status;
   job.state.lastDurationMs = Math.max(0, result.endedAt - result.startedAt);
   job.state.lastError = result.error;
+  job.state.lastErrorReason =
+    result.status === "error" && typeof result.error === "string"
+      ? (resolveFailoverReasonFromError(result.error) ?? undefined)
+      : undefined;
   job.state.lastDelivered = result.delivered;
   const deliveryStatus = resolveDeliveryStatus({ job, delivered: result.delivered });
   job.state.lastDeliveryStatus = deliveryStatus;
@@ -670,7 +675,6 @@ export async function onTimer(state: CronServiceState) {
     if (completedResults.length > 0) {
       await locked(state, async () => {
         await ensureLoaded(state, { forceReload: true, skipRecompute: true });
-
         for (const result of completedResults) {
           applyOutcomeToStoredJob(state, result);
         }
diff --git a/src/cron/types.ts b/src/cron/types.ts
index ef5de924b02..2a93bc30311 100644
--- a/src/cron/types.ts
+++ b/src/cron/types.ts
@@ -1,3 +1,4 @@
+import type { FailoverReason } from "../agents/pi-embedded-helpers.js";
 import type { ChannelId } from "../channels/plugins/types.js";
 import type { CronJobBase } from "./types-shared.js";
 
@@ -105,7 +106,6 @@ type CronAgentTurnPayload = {
 type CronAgentTurnPayloadPatch = {
   kind: "agentTurn";
 } & Partial<CronAgentTurnPayloadFields>;
-
 export type CronJobState = {
   nextRunAtMs?: number;
   runningAtMs?: number;
@@ -115,6 +115,8 @@ export type CronJobState = {
   /** Back-compat alias for lastRunStatus. */
   lastStatus?: "ok" | "error" | "skipped";
   lastError?: string;
+  /** Classified reason for the last error (when available). */
+  lastErrorReason?: FailoverReason;
   lastDurationMs?: number;
   /** Number of consecutive execution errors (reset on success). Used for backoff. */
   consecutiveErrors?: number;
diff --git a/src/gateway/protocol/schema/cron.ts b/src/gateway/protocol/schema/cron.ts
index 41e7467bece..3cba5a65781 100644
--- a/src/gateway/protocol/schema/cron.ts
+++ b/src/gateway/protocol/schema/cron.ts
@@ -56,6 +56,15 @@ const CronDeliveryStatusSchema = Type.Union([
   Type.Literal("unknown"),
   Type.Literal("not-requested"),
 ]);
+const CronFailoverReasonSchema = Type.Union([
+  Type.Literal("auth"),
+  Type.Literal("format"),
+  Type.Literal("rate_limit"),
+  Type.Literal("billing"),
+  Type.Literal("timeout"),
+  Type.Literal("model_not_found"),
+  Type.Literal("unknown"),
+]);
 const CronCommonOptionalFields = {
   agentId: Type.Optional(Type.Union([NonEmptyString, Type.Null()])),
   sessionKey: Type.Optional(Type.Union([NonEmptyString, Type.Null()])),
@@ -219,6 +228,7 @@ export const CronJobStateSchema = Type.Object(
     lastRunStatus: Type.Optional(CronRunStatusSchema),
     lastStatus: Type.Optional(CronRunStatusSchema),
     lastError: Type.Optional(Type.String()),
+    lastErrorReason: Type.Optional(CronFailoverReasonSchema),
     lastDurationMs: Type.Optional(Type.Integer({ minimum: 0 })),
     consecutiveErrors: Type.Optional(Type.Integer({ minimum: 0 })),
     lastDelivered: Type.Optional(Type.Boolean()),