Connectivity Reliability Score API

Can you rely on the network
here — right now?

A 0–100 connectivity reliability score for any coordinate — mobile network quality and satellite direct-to-cell fused into one go/no-go signal, with an A–F grade, the next satellite window, an explainable factor breakdown, and an honest confidence value. Satellite passes are computed live (SGP4); mobile quality is a quarterly Ookla aggregate — and every response labels which is which.

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A go/no-go you can act on

Score + A–F grade + a plain-English recommendation that names the more reliable network and the next satellite window — a launch/hold call, not a data dump.

Best network + redundancy — not an average

Reliability is the best available network; a second network only adds a bounded redundancy bonus. A strong-mobile site stays strong, and primaryNetwork tells you which to ride.

Per-constellation, live

Each DTC constellation (AST SpaceMobile, Lynk) is scored on its own, plus a combined best. Passes are propagated per request from fresh CelesTrak TLEs. Set altitude for drones.

Built for the call you have to make

Drone / BVLOS ops

Will my link hold along this corridor, and at what altitude? Score the route before you fly.

Maritime / offshore

When does mobile drop out and satellite become the only option? Plan transmit windows around it.

Logistics / fleet / remote field ops

Which sites need a satellite fallback provisioned? Triage by score and confidence.

Try it live

How the score is built

Reliability is the best available network plus a bounded redundancy bonus from the second — never a penalty for having one:

overall = best + (100 − best) × (second / 100) × 0.4
  best   = higher of the mobile / satellite subscores
  second = the other subscore (0 if only one network has data)
  grades: A ≥ 85 · B ≥ 70 · C ≥ 50 · D ≥ 30 · F < 30 · N/A = no data

What’s real vs. modeled

Mobile — quarterly aggregate

Ookla speed tiles (US/CA/EU/JP/AU/NZ), aggregated by quarter — not real-time. The factor note shows the source quarter, e.g. (2025-Q1).

Satellite — live, geometric

Passes are propagated live (SGP4). “Availability” is geometric — the % of a 6-hour window with a satellite ≥ 10° elevation — an upper bound on DTC service, not guaranteed coverage.

Confidence is a feature

A separate ledger (capped 90) of how much real data backs the number. It’s honestly ~40 today — the Ookla tiles are about a year old and there’s no crowdsourced layer yet. It tells you where data is thin.

terrain / weather / congestion are declared planned placeholders (score: null) that don’t move the v1 number. A null score with gradeN/A is a real answer (200), not an error — we never invent coverage.

API

GET /api/v1/reliability

Gated & metered. Subscribe on RapidAPI — it forwards your call with a server-side proxy secret our gate verifies (and adds X-RapidAPI-Key / -Host). Defaultconstellation=auto scores the DTC set and returns a per-constellation breakdown.

Query parameters

ParameterTypeDefaultDescription
latnumberrequiredLatitude (−90 to 90)
lngnumberrequiredLongitude (−180 to 180)
atstring (ISO)nowScore at an explicit/future time (SGP4 propagation)
altitudenumber (m)0Observer altitude — improves satellite line-of-sight for drones
constellationstringautoauto (DTC set) · asts · lynk · starlink · oneweb

Example request

curl 'https://satellite-pass-predictor.p.rapidapi.com/api/v1/reliability?lat=40.7128&lng=-74.006&constellation=auto' \
  -H 'X-RapidAPI-Key: YOUR_RAPIDAPI_KEY' \
  -H 'X-RapidAPI-Host: satellite-pass-predictor.p.rapidapi.com'

Example response

{
  "location": { "lat": 40.7128, "lng": -74.006 },
  "at": "2026-06-26T07:00:00Z",
  "altitudeM": 0,
  "constellation": "auto",
  "score": 94,
  "grade": "A",
  "confidence": 41,
  "primaryNetwork": "mobile",
  "bestSatelliteWindow": { "start": "2026-06-26T07:03Z", "maxElevationDeg": 86, "durationMin": 8 },
  "satellite": {
    "score": 62,
    "bestConstellation": "asts",
    "constellations": [
      { "id": "asts", "label": "AST SpaceMobile…", "score": 62, "passCount": 49,
        "coveragePercent": 45.8, "maxElevationDeg": 86, "note": "49 pass(es)/6h, 45.8% overhead…" },
      { "id": "lynk", "label": "Lynk", "score": 33, "passCount": 2, "coveragePercent": 3.9, … },
      { "id": "starlink", "label": "Starlink", "score": null,
        "note": "DTC subset not separable from the 10k+ Starlink catalog in public TLEs." }
    ]
  },
  "factors": [
    { "key": "terrestrial", "label": "Mobile (LTE/5G)", "source": "ookla", "score": 92,
      "role": "primary", "note": "in-cell, ~258 Mbps down, 45 ms (2025-Q1)" },
    { "key": "satellite", "label": "Satellite DTC", "source": "sgp4", "score": 62,
      "role": "backup", "note": "Best: AST SpaceMobile — 45.8% overhead, max elevation 86°" }
    // + terrain / weather / congestion (planned, score: null)
  ],
  "recommendation": "Mobile is the more reliable network here (92/100). A satellite window opens around 07:03 UTC as backup.",
  "warnings": []
}

Response fields

FieldTypeDescription
score0–100 | nullOverall reliability. null = no real signal here yet (with a 200 status).
gradeA–F | N/AA ≥ 85 · B ≥ 70 · C ≥ 50 · D ≥ 30 · F < 30.
confidence0–100How much REAL data backs the score (≤ 90 for a public-data-only answer).
primaryNetworkmobile | satellite | nullWhich network to ride; the other is the backup.
satelliteobjectCombined satellite score + a per-constellation breakdown (each DTC constellation scored on its own).
bestSatelliteWindowobject | nullBest upcoming pass: start, maxElevationDeg, durationMin.
factorsarrayEach input: score, source (ookla/sgp4/modeled), role (primary/backup/unavailable/planned), note.
recommendationstringPlain-English go/no-go call.
warningsarrayAny missing or limited input.

Pricing

Shares your GroundOrbit RapidAPI subscription with the satellite endpoints — same keys, quotas and billing, handled by RapidAPI.

Basic

Free

100 requests / day

Evaluation & hobby

Get started

Mobile quality: Ookla Open Data (quarterly, CC BY-NC-SA). Orbital data: CelesTrak (public domain), propagated with SGP4. Scores are computed estimates and should not be the sole input for safety-critical operations.