Get Synthetic Timeseries
Chart series for the device: sparse lab points (one per CS Lighthouse run,
score + CWV from that run's scores[]) and raw ttfb points (one per dedicated
5-min TTFB run, full DNS→transfer phases) overlaid on the regular field p75 line
(RUM). lab.ttfb is Lighthouse's server-only TTFB; the ttfb series is the full
phase breakdown — different measurements, kept in separate series. The ttfb
series is device-independent (CS measures TTFB once per run).
series selects which to compute — only the requested ones are fetched; the rest
return as empty lists.
Authorization
bearerAuth API token generated from the fastmon dashboard (Account → API Token). Send as Authorization: Bearer fm_... or paste the full token (including the fm_ prefix) into the Authorize dialog.
In: header
Path Parameters
uuiduuidQuery Parameters
^(desktop|mobile)$"desktop"1 <= value <= 9030^(hour|day)$"day"Comma-separated subset of lab,ttfb,field to compute. Unrequested series come back empty; use it to skip the expensive TTFB pull when unneeded. An empty/blank value means all series.
"lab,ttfb,field"Response Body
application/json
application/json
application/json
application/json
application/json
curl -X GET "https://example.com/v1/sites/497f6eca-6276-4993-bfeb-53cbbbba6f08/synthetic/pages/497f6eca-6276-4993-bfeb-53cbbbba6f08/timeseries"{ "page_id": "ef107761-0142-48fe-9dcd-5140d1ae58db", "url": "string", "device": "string", "window_days": 0, "interval": "string", "lab": [ { "ts": "string", "score": 0, "lcp": 0, "fcp": 0, "cls": 0, "inp": 0, "ttfb": 0 } ], "ttfb": [ { "ts": "string", "range_dns": 0, "range_connection": 0, "range_ssl": 0, "range_server": 0, "range_transfer": 0, "total": 0 } ], "field": [ { "ts": "string", "samples": 0, "lcp": 0, "fcp": 0, "cls": 0, "inp": 0, "ttfb": 0 } ]}{ "error": { "code": "string", "message": "string", "request_id": "string", "doc_url": "string", "details": {} }}{ "error": { "code": "string", "message": "string", "request_id": "string", "doc_url": "string", "details": {} }}{ "detail": [ { "loc": [ "string" ], "msg": "string", "type": "string", "input": null, "ctx": {} } ]}{ "error": { "code": "string", "message": "string", "request_id": "string", "doc_url": "string", "details": {} }}