Detect earth-observation changes API

Compare before/after caller-supplied EO scene metadata (NDVI, brightness, cloud cover). Commercial imagery pixels are not downloaded.

The Detect earth-observation changes operation is part of the Space & Satellite Intelligence API on BRAINIAC.software. Compare before/after caller-supplied EO scene metadata (NDVI, brightness, cloud cover). Commercial imagery pixels are not downloaded. It is exposed as POST /api/v1/space-intelligence/earth-observation-change-detect and priced at $0.04 USDC on Base. Payment uses the x402 exact scheme: an unpaid call returns HTTP 402 with payment requirements; after paying the exact USDC amount, retry the same request with a payment-signature header and Idempotency-Key. No account and no API key are required. Data sources for this product: Caller-supplied TLEs, observers, imagery metadata, weather, and catalog objects CelesTrak GP when celestrak is requested Open-Meteo when openMeteo is requested Limitations: No commercial satellite imagery provider or paid orbital API is used and no API key is required. Pass and conjunction geometry use a simplified Keplerian propagator from TLE mean elements, not full SGP4/SDP4. Treat timing and miss-distance values as approximate. TLE freshness is reported from the element epoch when parseable. Stale elements increase positional uncertainty. Earth-observation change, cloud, quality, and license results use only caller-supplied image metadata/statistics. Evidence reports aggregate only sections for which records were supplied or optionally fetched. Outputs are compliance prechecks, drafts, or data lookups for human review. They are not official determinations, legal advice, identity confirmation, or certified filings. Related operations in this group include Predict satellite passes, Detect satellite orbit changes, Screen satellite conjunctions, Assess satellite imagery cloud cover. Open the group documentation for the full request schema, field notes, and response examples before integrating.

POST$0.04 USDC
/api/v1/space-intelligence/earth-observation-change-detect

Example request

curl -i -X POST "https://www.brainiac.software/api/v1/space-intelligence/earth-observation-change-detect" \
  -H 'content-type: application/json' \
  -H 'Idempotency-Key: <fresh-64-character-random-hex-key>' \
  --data-binary @- <<'JSON'
{
  "asOf": "2026-11-04T21:00:00.000Z",
  "images": [
    {
      "id": "B",
      "sceneId": "AOI1",
      "side": "before",
      "ndvi": 0.4,
      "brightness": 100,
      "cloudCoverPct": 5,
      "capturedAt": "2026-10-01",
      "source": "Caller-supplied"
    },
    {
      "id": "A",
      "sceneId": "AOI1",
      "side": "after",
      "ndvi": 0.55,
      "brightness": 110,
      "cloudCoverPct": 8,
      "capturedAt": "2026-11-01",
      "source": "Caller-supplied"
    }
  ]
}
JSON

An unpaid probe returns HTTP 402 with x402 payment requirements. After paying the exact USDC amount on Base, retry the identical request with a payment-signature header.

FAQ

  • Do I need an API key? No. Pay the listed USDC amount with x402.
  • What network? Base (eip155:8453), USDC.
  • Is this an official determination? No. Results are for human review against the cited sources.

Related APIs

Space & Satellite Intelligence APIFull docsHow it works