Exhaustive observability survey for a sensor

Costs 1 token(s) per request. Evaluates EVERY event in the window against a sensor's resolving power using each event's precomputed required resolution, and returns observable vs not counts, the breakdown by required resolution, and the top observable events with their imaging rationale. Observability is resolvability — whether the physical mark is large enough: sentinel-2 is ~10 m optical (needs daylight and clear sky), sentinel-1 is SAR (all-weather, day or night). Deterministic; no LLM and no per-event cost.

get/api/v1/collection/observability

Request

  • Base URL: https://offnadir-delta.com
  • URL: https://offnadir-delta.com/api/v1/collection/observability
  • Auth: one of:
    • HTTP bearer
    • API key in header X-API-Key

Query parameters

sensor'sentinel-2' | 'sentinel-1'

sentinel-2 (~10 m optical) or sentinel-1 (SAR). Default sentinel-2.

bboxstring

Area as "west,south,east,north" (WGS84). Omit for a global survey.

start_datestring date

Inclusive start date YYYY-MM-DD. Defaults to today. Clamped to your plan history floor (and to yesterday without real-time); meta.window_clamp says what was narrowed. The event record starts on 2026-09-23: an earlier window returns no events because none were recorded, not because none happened.

end_datestring date

Inclusive end date YYYY-MM-DD. Defaults to today. Window capped at 30 days.

categoriesstring

Comma-separated Delta categories to restrict to.

min_geoint_scorenumber

Drop events below this GEOINT score before surveying.

top_ninteger

How many observable events to return (1..50, default 20).

Response

Observable vs not, with the per-resolution breakdown.

metaobject
surveyobject

Changes

No recorded changes to this operation across all 1 revision of this API.