fastmon Docs
Synthetic

Get Synthetic Ttfb

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Diagnose TTFB: CS server-side phase breakdown vs RUM field p75, classifying server-bound vs network/geo-bound. CS phases are per-page; field p75 per device. Latest run unless analysis_uuid given.

Authorization

bearerAuth
AuthorizationBearer <token>

API token generated from the fastmon dashboard (Account → API Token) or at organization level (fmo_…, one that outlives its creator). Send as Authorization: Bearer fm_... or paste the full token (including its prefix) into the Authorize dialog.

In: header

Path Parameters

page_id*Page Id
Formatuuid
site_id*Site Id
Formatuuid

Query Parameters

window_days?Window Days
Range1 <= value <= 90
Default7
analysis_uuid?|

Target a specific run; default latest

Response Body

application/json

application/json

application/json

application/json

application/json

GET
/sites/{site_id}/synthetic/pages/{page_id}/ttfb
curl -X GET "https://example.com/sites/497f6eca-6276-4993-bfeb-53cbbbba6f08/synthetic/pages/497f6eca-6276-4993-bfeb-53cbbbba6f08/ttfb"
{  "page_id": "ef107761-0142-48fe-9dcd-5140d1ae58db",  "url": "string",  "window_days": 0,  "lab_phases": {    "range_dns": 0,    "range_connection": 0,    "range_ssl": 0,    "range_server": 0,    "range_transfer": 0,    "total": 0,    "server_dominant": true  },  "devices": [    {      "device": "string",      "field_ttfb_p75": 0,      "field_dns_p75": 0,      "field_tcp_p75": 0,      "samples": 0,      "sufficient": true,      "verdict": "string"    }  ]}