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agents-0-22-0-12-b

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Question

Is the second argument of a this.schedule() callback the Schedule object?

Answer key

A correct answer says
A scheduled callback's second argument is the parsed `Schedule` object.
The stale answer
A scheduled callback's second argument is the raw storage row with `payload` as a JSON string.

Answer

Yes. In the installed `agents` 0.27.0, a scheduled callback is called as `handler(payload, schedule)`. The first argument is the payload you passed to `this.schedule(when, "callbackName", payload)`. The second is the `Schedule` object for the run, which carries fields like `id` and `callback` plus the timing. You can see the call at `node_modules/agents/dist/scheduler-DZ3xQfeK.js:229`. Schedules routed from a sub-agent go through `_executeRouted` (line 417), which also builds a `Schedule` object before calling the handler.

Answering cost $0.23.

Grade

correct

The judge's reason: It states the second argument is the Schedule object and does not present the raw storage row as current.

The judge's log

Session log

What the agent wrote, the tools it called, and what they returned, from docs/bench/2026-10-11-done3/runs/B-project-sync/agents-0-22-0-12-b.jsonl. Thinking and the session's settings are left out. The raw log

  1. Tool call: Grep

    {
  "pattern": "\\.call\\(this, *JSON\\.parse|callback\\.bind\\(this\\)\\(|schedule\\.payload",
  "path": "C:\\Users\\haya0\\AppData\\Local\\Temp\\ludion-bench-WcFVQL\\work\\node_modules\\agents\\dist",
  "output_mode": "content",
  "head_limit": 10
}

  2. Tool output

    node_modules\agents\dist\src-DgCbZtIR.js:4667:					await callback.bind(this)(runInfo, lifecycle);

  3. Tool call: Read

    {
  "file_path": "C:\\Users\\haya0\\AppData\\Local\\Temp\\ludion-bench-WcFVQL\\work\\node_modules\\agents\\dist\\src-DgCbZtIR.js",
  "offset": 4630,
  "limit": 45
}

  4. Tool output

    4630		*   dedupe the child's real late result away (the #1752 production incident).
4631		*/
4632		async _deliverDetachedTerminal(runId, kind, result, options, completedAt = Date.now()) {
4633			const now = Date.now();
4634			const leaseFloor = now - DETACHED_DELIVERY_LEASE_MS;
4635			const claimQuery = kind === "finish" ? `UPDATE cf_agent_tool_runs
4636	             SET finish_claimed_at = ?
4637	             WHERE run_id = ?
4638	               AND finish_delivered_at IS NULL
4639	               AND (finish_claimed_at IS NULL OR finish_claimed_at < ?)` : `UPDATE cf_agent_tool_runs
4640	             SET give_up_claimed_at = ?
4641	             WHERE run_id = ?
4642	               AND give_up_delivered_at IS NULL
4643	               AND (give_up_claimed_at IS NULL OR give_up_claimed_at < ?)`;
4644			if (this.ctx.storage.sql.exec(claimQuery, now, runId, leaseFloor).rowsWritten === 0) return;
4645			const row = this._readAgentToolRun(runId);
4646			if (!row) return;
4647			this._updateAgentToolTerminal(runId, result, completedAt);
4648			this._broadcastAgentToolTerminal(row.parent_tool_call_id ?? void 0, options?.sequence ?? Date.now(), result);
4649			const runInfo = this._agentToolRunInfoFromRow(row, result.status, completedAt);
4650			const lifecycle = {
4651				status: result.status,
4652				...result.summary !== void 0 ? { summary: result.summary } : {},
4653				...result.error !== void 0 ? { error: result.error } : {},
4654				...result.reason !== void 0 ? { reason: result.reason } : {},
4655				...result.childStillRunning !== void 0 ? { childStillRunning: result.childStillRunning } : {}
4656			};
4657			const invoke = async () => {
4658				try {
4659					await this.onAgentToolFinish(runInfo, lifecycle);
4660				} catch (error) {
4661					await this._safeRunOnError(error);
4662				}
4663				const callbackName = row.detached_on_finish;
4664				if (callbackName) {
4665					const callback = this[callbackName];
4666					if (typeof callback === "function") try {
4667						await callback.bind(this)(runInfo, lifecycle);
4668					} catch (error) {
4669						this._emit("agent_tool:detached:delivery_failed", {
4670							runId,
4671							kind,
4672							status: result.status,
4673							callback: callbackName,
4674							error: error instanceof Error ? error.message : String(error)

  5. Agent

    Not the schedule path. Let me find where scheduled callbacks are invoked.

  6. Tool call: Grep

    {
  "pattern": "JSON\\.parse\\(row\\.payload|JSON\\.parse\\(.*payload.*\\),\\s*\\w+",
  "path": "C:\\Users\\haya0\\AppData\\Local\\Temp\\ludion-bench-WcFVQL\\work\\node_modules\\agents\\dist",
  "output_mode": "content",
  "-B": 3,
  "-A": 3,
  "head_limit": 40
}

  7. Tool output

    node_modules\agents\dist\ai-sdk-OoGkFy3s.js.map:1:[Omitted long matching line]
--
node_modules\agents\dist\connector-58XDGvc3.js.map:1:[Omitted long matching line]
--
node_modules\agents\dist\client-1tEQ1Oqz.js.map:1:[Omitted long matching line]
--
node_modules\agents\dist\images-Ce9SCu3X.js.map:1:[Omitted long matching line]
--
node_modules\agents\dist\chat\index.js.map:1:[Omitted long matching line]
--
node_modules\agents\dist\lifecycle-CFu6OV03.js-193-		capability: row.capability,
node_modules\agents\dist\lifecycle-CFu6OV03.js-194-		fn: row.fn,
node_modules\agents\dist\lifecycle-CFu6OV03.js-195-		time: row.time,
node_modules\agents\dist\lifecycle-CFu6OV03.js:196:		payload: typeof row.payload === "string" ? JSON.parse(row.payload) : void 0,
node_modules\agents\dist\lifecycle-CFu6OV03.js-197-		retry: typeof row.retry_options === "string" ? JSON.parse(row.retry_options) : void 0,
node_modules\agents\dist\lifecycle-CFu6OV03.js-198-		singleflight: row.singleflight === 1,
node_modules\agents\dist\lifecycle-CFu6OV03.js-199-		exclusive: row.exclusive === 1,
--
node_modules\agents\dist\experimental\channels\slack\index.js.map:1:[Omitted long matching line]
--
node_modules\agents\dist\lifecycle-CFu6OV03.js.map:1:[Omitted long matching line]
--
node_modules\agents\dist\harness\think\index.js.map:1:[Omitted long matching line]
--
node_modules\agents\dist\queue-BB-zfIYF.js.map:1:[Omitted long matching line]
--
node_modules\agents\dist\scheduler-DZ3xQfeK.js-369-		if (row.callback === "_cf_keepAliveHeartbeat") continue;
node_modules\agents\dist\scheduler-DZ3xQfeK.js-370-		let payload;
node_modules\agents\dist\scheduler-DZ3xQfeK.js-371-		try {
node_modules\agents\dist\scheduler-DZ3xQfeK.js:372:			payload = typeof row.payload === "string" ? JSON.parse(row.payload) : void 0;
node_modules\agents\dist\scheduler-DZ3xQfeK.js-373-		} catch (error) {
node_modules\agents\dist\scheduler-DZ3xQfeK.js-374-			console.error(`Skipping schedule "${row.id}" during job-queue migration: its payload is not valid JSON`, error);
node_modules\agents\dist\scheduler-DZ3xQfeK.js-375-			continue;
--
node_modules\agents\dist\observability\ai\index.js.map:1:[Omitted long matching line]
--
node_modules\agents\dist\queue-BB-zfIYF.js-248-	for (const row of rows) {
node_modules\agents\dist\queue-BB-zfIYF.js-249-		let payload;
node_modules\agents\dist\queue-BB-zfIYF.js-250-		try {
node_modules\agents\dist\queue-BB-zfIYF.js:251:			payload = typeof row.payload === "string" ? JSON.parse(row.payload) : void 0;

[Showing results with pagination = limit: 40]

  8. Tool call: Grep

    {
  "pattern": "\\]\\.call\\(|\\.apply\\(this|callback\\.call|fn\\.call|\\(job\\.payload|\\(payload, ?\\w+\\)",
  "path": "C:\\Users\\haya0\\AppData\\Local\\Temp\\ludion-bench-WcFVQL\\work\\node_modules\\agents\\dist",
  "glob": "{scheduler,lifecycle,queue}*.js",
  "output_mode": "content",
  "-B": 4,
  "-A": 2,
  "head_limit": 60
}

  9. Tool output

    node_modules\agents\dist\scheduler-DZ3xQfeK.js-490-}
node_modules\agents\dist\scheduler-DZ3xQfeK.js-491-/** Every schedule job this Scheduler owns, with its parsed vocabulary. */
node_modules\agents\dist\scheduler-DZ3xQfeK.js-492-function _ownedJobs() {
node_modules\agents\dist\scheduler-DZ3xQfeK.js-493-	const owned = [];
node_modules\agents\dist\scheduler-DZ3xQfeK.js:494:	for (const job of this.lifecycle.jobs.list()) if (isSchedulerJobPayload(job.payload)) owned.push({
node_modules\agents\dist\scheduler-DZ3xQfeK.js-495-		job,
node_modules\agents\dist\scheduler-DZ3xQfeK.js-496-		timing: job.payload
--
node_modules\agents\dist\scheduler-DZ3xQfeK.js-609-}
node_modules\agents\dist\scheduler-DZ3xQfeK.js-610-function _getForOwner(owner, id) {
node_modules\agents\dist\scheduler-DZ3xQfeK.js-611-	const ownerKey = owner?.key ?? null;
node_modules\agents\dist\scheduler-DZ3xQfeK.js-612-	const job = this.lifecycle.jobs.get(id);
node_modules\agents\dist\scheduler-DZ3xQfeK.js:613:	if (!job || !isSchedulerJobPayload(job.payload)) return void 0;
node_modules\agents\dist\scheduler-DZ3xQfeK.js:614:	if ((job.payload.owner_path_key ?? null) !== ownerKey) return void 0;
node_modules\agents\dist\scheduler-DZ3xQfeK.js-615-	return _assertClassBrand(_Scheduler_brand, this, _jobToSchedule).call(this, job, job.payload);
node_modules\agents\dist\scheduler-DZ3xQfeK.js-616-}
--
node_modules\agents\dist\scheduler-DZ3xQfeK.js-632-}
node_modules\agents\dist\scheduler-DZ3xQfeK.js-633-async function _cancelForOwner(owner, id) {
node_modules\agents\dist\scheduler-DZ3xQfeK.js-634-	const ownerKey = owner?.key ?? null;
node_modules\agents\dist\scheduler-DZ3xQfeK.js-635-	const job = this.lifecycle.jobs.get(id);
node_modules\agents\dist\scheduler-DZ3xQfeK.js:636:	if (!job || !isSchedulerJobPayload(job.payload)) return { ok: false };
node_modules\agents\dist\scheduler-DZ3xQfeK.js:637:	if ((job.payload.owner_path_key ?? null) !== ownerKey) return { ok: false };
node_modules\agents\dist\scheduler-DZ3xQfeK.js-638-	const callback = job.fn;
node_modules\agents\dist\scheduler-DZ3xQfeK.js-639-	await this.lifecycle.jobs.cancel(id);
--
node_modules\agents\dist\queue-BB-zfIYF.js-86-	}
node_modules\agents\dist\queue-BB-zfIYF.js-87-	/** Drive one due item dispatched by the Lifecycle event loop. */
node_modules\agents\dist\queue-BB-zfIYF.js-88-	async onJob(context) {
node_modules\agents\dist\queue-BB-zfIYF.js-89-		const { job, attempt } = context;
node_modules\agents\dist\queue-BB-zfIYF.js:90:		if (!isQueueJobPayload(job.payload)) {
node_modules\agents\dist\queue-BB-zfIYF.js-91-			console.error(`Malformed queue item ${job.id}; dropping it`);
node_modules\agents\dist\queue-BB-zfIYF.js-92-			return;
--
node_modules\agents\dist\queue-BB-zfIYF.js-97-			id: job.id,
node_modules\agents\dist\queue-BB-zfIYF.js-98-			attempt,
node_modules\agents\dist\queue-BB-zfIYF.js-99-			maxAttempts: resolveRetryConfig(job.retry, _classPrivateFieldGet2(_retryDefaults, this)).maxAttempts
node_modules\agents\dist\queue-BB-zfIYF.js-100-		});
node_modules\agents\dist\queue-BB-zfIYF.js:101:		if (job.payload.owner_path) {
node_modules\agents\dist\queue-BB-zfIYF.js-102-			try {
node_modules\agents\dist\queue-BB-zfIYF.js-103-				await this.lifecycle.routes.to({
--
node_modules\agents\dist\queue-BB-zfIYF.js-364-}
node_modules\agents\dist\queue-BB-zfIYF.js-365-/** Every queue job this Queue owns, in push order. */
node_modules\agents\dist\queue-BB-zfIYF.js-366-function _ownedJobs() {
node_modules\agents\dist\queue-BB-zfIYF.js-367-	const owned = [];
node_modules\agents\dist\queue-BB-zfIYF.js:368:	for (const job of this.lifecycle.jobs.list()) if (isQueueJobPayload(job.payload)) owned.push({
node_modules\agents\dist\queue-BB-zfIYF.js-369-		job,
node_modules\agents\dist\queue-BB-zfIYF.js-370-		envelope: job.payload
--
node_modules\agents\dist\queue-BB-zfIYF.js-373-}
node_modules\agents\dist\queue-BB-zfIYF.js-374-function _getForOwner(owner, id) {
node_modules\agents\dist\queue-BB-zfIYF.js-375-	const ownerKey = owner?.key ?? null;
node_modules\agents\dist\queue-BB-zfIYF.js-376-	const job = this.lifecycle.jobs.get(id);
node_modules\agents\dist\queue-BB-zfIYF.js:377:	if (!job || !isQueueJobPayload(job.payload)) return void 0;
node_modules\agents\dist\queue-BB-zfIYF.js:378:	if ((job.payload.owner_path_key ?? null) !== ownerKey) return void 0;
node_modules\agents\dist\queue-BB-zfIYF.js-379-	return _assertClassBrand(_Queue_brand, this, _jobToItem).call(this, job, job.payload);
node_modules\agents\dist\queue-BB-zfIYF.js-380-}

  10. Agent

    Let me look at the Scheduler's onJob dispatch.

  11. Tool call: Grep

    {
  "pattern": "async onJob",
  "path": "C:\\Users\\haya0\\AppData\\Local\\Temp\\ludion-bench-WcFVQL\\work\\node_modules\\agents\\dist\\scheduler-DZ3xQfeK.js",
  "output_mode": "content",
  "-A": 45
}

  12. Tool output

    178:	async onJob(context) {
179-		const { job, attempt } = context;
180-		const timing = job.payload;
181-		if (!isSchedulerJobPayload(timing)) {
182-			console.error(`Malformed schedule job ${job.id}; dropping it`);
183-			return;
184-		}
185-		if (attempt === 1) _assertClassBrand(_Scheduler_brand, this, _emit).call(this, "schedule:execute", {
186-			callback: job.fn,
187-			id: job.id
188-		});
189-		else _assertClassBrand(_Scheduler_brand, this, _emit).call(this, "schedule:retry", {
190-			callback: job.fn,
191-			id: job.id,
192-			attempt,
193-			maxAttempts: resolveRetryConfig(job.retry, _classPrivateFieldGet2(_retryDefaults, this)).maxAttempts
194-		});
195-		if (timing.owner_path) {
196-			try {
197-				await this.lifecycle.routes.to({
198-					key: timing.owner_path_key ?? timing.owner_path,
199-					data: timing.owner_path
200-				}, {
201-					type: "dispatch",
202-					id: job.id,
203-					fn: job.fn,
204-					job: timing,
205-					retry: job.retry
206-				});
207-			} catch (error) {
208-				if (isPlatformFailure(error)) throw error;
209-				console.error(`error dispatching scheduled callback "${job.fn}"`, error);
210-				_assertClassBrand(_Scheduler_brand, this, _emit).call(this, "schedule:error", {
211-					callback: job.fn,
212-					id: job.id,
213-					error: error instanceof Error ? error.message : String(error),
214-					attempts: 0
215-				});
216-				try {
217-					await _classPrivateFieldGet2(_onError, this)?.call(this, error);
218-				} catch {}
219-				return "yield";
220-			}
221-			return _assertClassBrand(_Scheduler_brand, this, _recurrenceOutcome).call(this, timing);
222-		}
223-		const handler = _assertClassBrand(_Scheduler_brand, this, _resolveCallback).call(this, job.fn);
--
233:	async onJobError(context, error) {
234-		const { job } = context;
235-		const timing = job.payload;
236-		if (!isSchedulerJobPayload(timing)) return void 0;
237-		const { maxAttempts } = resolveRetryConfig(job.retry, _classPrivateFieldGet2(_retryDefaults, this));
238-		console.error(`error executing callback "${job.fn}" after ${maxAttempts} attempts`, error);
239-		_assertClassBrand(_Scheduler_brand, this, _emit).call(this, "schedule:error", {
240-			callback: job.fn,
241-			id: job.id,
242-			error: error instanceof Error ? error.message : String(error),
243-			attempts: maxAttempts
244-		});
245-		try {
246-			await _classPrivateFieldGet2(_onError, this)?.call(this, error);
247-		} catch {}
248-		return _assertClassBrand(_Scheduler_brand, this, _recurrenceOutcome).call(this, timing);
249-	}
250-	/** Handle Scheduler protocol messages routed by another Lifecycle. */
251-	async onRoute(context) {
252-		const message = context.payload;
253-		const owner = context.source ?? null;
254-		switch (message.type) {
255-			case "schedule": return _assertClassBrand(_Scheduler_brand, this, _insert).call(this, owner, parseWhen(message.when, Date.now(), message.callback), message.callback, message.payload, message.options);
256-			case "every": return _assertClassBrand(_Scheduler_brand, this, _insert).call(this, owner, parseInterval(message.intervalSeconds, Date.now()), message.callback, message.payload, message.options);
257-			case "get": return _assertClassBrand(_Scheduler_brand, this, _getForOwner).call(this, owner, message.id);
258-			case "list": return _assertClassBrand(_Scheduler_brand, this, _listForOwner).call(this, owner, message.criteria);
259-			case "cancel": return _assertClassBrand(_Scheduler_brand, this, _cancelForOwner).call(this, owner, message.id);
260-			case "dispatch":
261-				await _assertClassBrand(_Scheduler_brand, this, _executeRouted).call(this, message.id, message.fn, message.job, message.retry);
262-				return true;
263-			default: throw new Error("Unknown routed Scheduler message");
264-		}
265-	}
266-	/** Set a delayed, dated, or cron schedule for a registered callback. */
267-	async set(when, callback, payload, options) {
268-		await this.lifecycle.ready();
269-		_assertClassBrand(_Scheduler_brand, this, _validateSchedule).call(this, when, callback, options);
270-		const result = this.lifecycle.routes.source ? await this.lifecycle.routes.toRoot({
271-			type: "schedule",
272-			when,
273-			callback,
274-			payload,
275-			options
276-		}) : await _assertClassBrand(_Scheduler_brand, this, _insert).call(this, null, parseWhen(when, Date.now(), callback), callback, payload, options);
277-		_assertClassBrand(_Scheduler_brand, this, _emitCreated).call(this, result);
278-		return result.schedule;

  13. Tool call: Read

    {
  "file_path": "C:\\Users\\haya0\\AppData\\Local\\Temp\\ludion-bench-WcFVQL\\work\\node_modules\\agents\\dist\\scheduler-DZ3xQfeK.js",
  "offset": 223,
  "limit": 10
}

  14. Tool output

    223			const handler = _assertClassBrand(_Scheduler_brand, this, _resolveCallback).call(this, job.fn);
224			if (!handler) {
225				console.error(`callback ${job.fn} not found`);
226				return _assertClassBrand(_Scheduler_brand, this, _recurrenceOutcome).call(this, timing);
227			}
228			const schedule = _assertClassBrand(_Scheduler_brand, this, _jobToSchedule).call(this, job, timing);
229			await this.lifecycle.runInHostContext(() => handler(timing.payload, schedule));
230			return _assertClassBrand(_Scheduler_brand, this, _recurrenceOutcome).call(this, timing);
231		}
232		/** Observe one schedule's terminal application failure. */

  15. Tool call: Grep

    {
  "pattern": "function _executeRouted",
  "path": "C:\\Users\\haya0\\AppData\\Local\\Temp\\ludion-bench-WcFVQL\\work\\node_modules\\agents\\dist\\scheduler-DZ3xQfeK.js",
  "output_mode": "content",
  "-A": 15
}

  16. Tool output

    417:async function _executeRouted(id, fn, timing, retry) {
418-	const handler = _assertClassBrand(_Scheduler_brand, this, _resolveCallback).call(this, fn);
419-	if (!handler) {
420-		console.error(`callback ${fn} not found`);
421-		return;
422-	}
423-	const { maxAttempts, baseDelayMs, maxDelayMs } = resolveRetryConfig(retry, _classPrivateFieldGet2(_retryDefaults, this));
424-	const isOneShot = timing.type === "delayed" || timing.type === "scheduled";
425-	const schedule = _assertClassBrand(_Scheduler_brand, this, _payloadToSchedule).call(this, id, fn, timing);
426-	try {
427-		await tryN(maxAttempts, async (attempt) => {
428-			if (attempt > 1) _assertClassBrand(_Scheduler_brand, this, _emit).call(this, "schedule:retry", {
429-				callback: fn,
430-				id,
431-				attempt,
432-				maxAttempts

  17. Agent

    Yes. In the installed `agents` 0.27.0, a scheduled callback is called as `handler(payload, schedule)`. The first argument is the payload you passed to `this.schedule(when, "callbackName", payload)`. The second is the `Schedule` object for the run, which carries fields like `id` and `callback` plus the timing. You can see the call at `node_modules/agents/dist/scheduler-DZ3xQfeK.js:229`. Schedules routed from a sub-agent go through `_executeRouted` (line 417), which also builds a `Schedule` object before calling the handler.