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x402 Hail Check
x402
x402 Hail Check is a paid API for AI agents from hail.kagurazaka.dev, paid per call via x402, $0.1/call, status unknown (last checked 2026-11-02).
Returns NOAA radar hail estimates, NEXRAD signatures, spotter reports, and a hail likelihood verdict for a US address or lat/lon on a specific date
Price / call$0.1
Success—
StatusUnknown
How this service works
Hail at a US address or lat/lon on one date: the largest NOAA radar estimate of hail size (MRMS MESH) at the place and within 1, 3, 5 and 10 miles, NEXRAD hail signatures, nearby spotter reports, and a verdict (hail_likely, hail_possible, no_hail_detected). Dates from 2020-10-14. For roofing, insurance claims and property checks. Not found addresses and dates without data are not charged.
Output
Returns a JSON object with: a verdict (hail_likely, hail_possible, or no_hail_detected), the verdict rule, MRMS MESH radar hail size estimates in inches at the location and within 1, 3, 5, and 10 miles, NEXRAD Level III hail signature count and size, nearby storm spotter reports with distance and hail size, the UTC time window covered, and geocoder-matched location details.
Example use cases
Insurance claim hail verification
“I need to verify whether hail hit my property at 1452 Oak Ridge Dr, Oklahoma City, OK 73120 on June 3, 2023 for a homeowner's insurance claim — can you pull the NOAA hail data and tell me the largest estimated hail size?”
Roofing contractor property inspection
“Before I send my crew out, can you check if there was hail at 37.1, -88.96 on May 16, 2025 and how big it was within 3 miles?”
Pre-purchase property storm history check
“I'm buying a house at 845 N Elm Street, Wichita, KS 67203 — can you check if it got any significant hail on July 15, 2022 to see if the roof might have damage?”
Technical details
Endpoint
GEThttps://hail.kagurazaka.dev/v1/hail/check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need authoritative NOAA radar-backed hail data (MRMS MESH + NEXRAD) for a specific US address or lat/lon on a specific historical date (from October 14, 2020 onward). Ideal for insurance claim verification, roofing assessments, and property damage checks where you need multi-radius hail size estimates and spotter corroboration in a single call. Not-found addresses and data-less dates are not charged, making it low-risk to query.
Side effects
- Address not found — not charged, returns location error
- Date before 2020-10-14 — outside data coverage
- Date with no radar data available — not charged, returns no-data response
- Invalid date format — returns validation error
- Location outside the US — not covered by NOAA MRMS data
- Missing required date parameter — returns 400-style error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"date": "2025-05-16",
"notes": [
"Radar estimates (MESH) are not ground observations; ..."
],
"verdict": "hail_likely",
"location": {
"lat": 37.1,
"lon": -88.96,
"input": "37.1,-88.96",
"matched": "37.1, -88.96",
"geocoder": "none"
},
"window_utc": [
"2025-05-16T12:00:00Z",
"2025-05-17T12:00:00Z"
],
"verdict_rule": "radar estimate of 0.75 in or more within 3 miles",
"radar_estimate": {
"source": "NOAA MRMS Maximum Estimated Size of Hail (MESH), 24-hour maximum, 0.01-degree grid",
"covered": true,
"max_size_in": {
"at_location": 1.08,
"within_1_mi": 1.28,
"within_3_mi": 2.19,
"within_5_mi": 2.54,
"within_10_mi": 2.54
}
},
"spotter_reports": [
{
"lat": 37.1,
"lon": -88.97,
"state": "KY",
"county": "Ballard",
"comment": "Late LSR. At least two public reports/photos of approximately CD/DVD sized hail in Ballard County... (PAH)",
"size_in": 4.5,
"location": "2 NNE La Center",
"time_utc": "2025-05-16T21:45:00Z",
"distance_mi": 0.6
}
],
"radar_signatures": {
"count": 8,
"source": "NOAA NEXRAD Level III hail signatures (NCEI SWDI nx3hail)",
"last_utc": "2025-05-17T00:18:39Z",
"available": true,
"first_utc": "2025-05-16T21:40:21Z",
"within_mi": 5,
"max_size_in": 4
}
}
}Tags
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