Crux API - depending when API request is run no data is populated for URLs

[Agent Dataservices]

I've run my code below in the morning (between 8AM EST - 11AM EST) and no data populates for my urls, however in the evening (at no specific time) data populates.

I'm using the Crux API docs here, specifically looking at daily-updates:https://developer.chrome.com/docs/crux/api/#daily-updates

Which states:

Data is updated daily around 04:00 UTC. There is no service level agreement for update times; it is run on a best-effort basis every day.

More importantly it also states:

Data will not differ within the same day after it has been updated around 04:00 UTC, repeated calls will yield the same results.

Which I feel means should have data always populating for these urls if they had populated for the previous day!

My code:

import requests import json x = {"formFactor":"TABLET", "metrics":["largest_contentful_paint", "experimental_time_to_first_byte", "first_contentful_paint", "cumulative_layout_shift", "first_input_delay", "experimental_interaction_to_next_paint"], "url":"https://www.happy-tests.com/id", } url = "https://chromeuxreport.googleapis.com/v1/records:queryRecord?key={key}" headers = {"Content-Type": "application/json", "Accept": "application/json"} response = requests.post(url, json=x, headers=headers) response_json = response.json() print(response_json)

'error': {'code': 404, 'message': 'chrome ux report data not found', 'status': 'NOT_FOUND'}}

[Barry Pollard]

Yes you should get a seamless response (either yesterdays data, or todays depending if todays data has been released or not).

Is that an example URL below? I can’t get that to resolve and can’t see it ever having been in the CrUX dataset from a quick look?

And are you always looking at TABLET data? That is usually the least used to quite possible it drops in and out each day if it fails to meet our popularity criteria some days.

Barry

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