{
	"description": "executeOnce: compute an aggregate across all fetched items ($input.all()) and emit a single result — not N duplicate averages.",
	"conversation": [
		{
			"role": "user",
			"text": "On manual trigger, fetch all employee records from GET https://api.example.com/employees and POST the average salary across everyone as a single number to POST https://api.example.com/reports/average-salary."
		}
	],
	"messageBudget": 6,
	"complexity": "medium",
	"tags": ["build", "loops", "execute-once", "manual", "http-request"],
	"triggerType": "manual",
	"datasets": ["full"],
	"outcomeExpectations": [
		"The average salary is computed across the full employee list and sent as one value in a single POST — not once per employee.",
		"The node that computes or sends the aggregate has executeOnce enabled (or equivalent collapse) so $input.all()-style aggregation does not run N times for N employees."
	],
	"executionScenarios": [
		{
			"name": "four-employees-one-average",
			"description": "Four salaries average to 75000; one POST with that number",
			"dataSetup": "GET https://api.example.com/employees returns { \"employees\": [{ \"name\": \"A\", \"salary\": 60000 }, { \"name\": \"B\", \"salary\": 70000 }, { \"name\": \"C\", \"salary\": 80000 }, { \"name\": \"D\", \"salary\": 90000 }] }. POST https://api.example.com/reports/average-salary returns { \"ok\": true }. The verifier must inspect the outbound POST request body to https://api.example.com/reports/average-salary.",
			"successCriteria": "The workflow executes without errors. POST https://api.example.com/reports/average-salary is called exactly once (not four times). Judge from the intercepted outbound POST request body in the execution trace: it contains the average salary 75000 in a field such as average, average_salary, salary, or value. A workflow that POSTs four separate averages FAILS."
		}
	]
}