Your own view of catastrophe risk.
Run open catastrophe models on your own locations and compare the results with your vendor models and your broker’s numbers.
Simulated hurricanes · Miami, Houston, New Orleans
$13,672
Average loss per year · 0.14% of $10M
10,000 simulated years
Image: Hurricane Erin, 2025, from GOES-19. NOAA NESDIS and CSU CIRA, public domain.
What Craton is
Open catastrophe models your whole team can run
Check the catastrophe numbers from your broker or vendor model, and see the data behind each result.
Open models
Nine open models for hurricane, earthquake, flood, windstorm and wildfire. Each one is documented and lists its source data.
Build your own
Build your own model from public datasets and run it through the API in about fifteen minutes.
No per-seat licenses
Pricing is based on usage, so the whole team can run models. You do not need a specialist to start a run.
Made for risk managers, cat and analytics teams and analysts and developers.
The models
Nine open catastrophe models
Choose a model and your locations, and get results in minutes.
- Past hurricanes Historical storms since 1980, applied to your locations.
- Simulated hurricanes 10,000 years of simulated storms, including rare events too infrequent to appear in the historical record.
- Windstorm The Oasis reference model. It covers only a small demo area.
- Earthquake scenario A single earthquake at the magnitude you choose.
- Historical earthquakes Past earthquakes from USGS ShakeMaps, applied to your locations.
- Europe and Turkey earthquake Simulated earthquake years from the ESRM20 European risk model.
- River flood Flood depth at return periods from 10 to 500 years.
- Coastal flood Storm-surge flood depth worldwide, at return periods from 2 to 1,000 years.
- Wildfire Annual burn probability across the United States.
The data
Data and exposure tools
Craton includes the public hazard data the models use, a library of other risk datasets, and tools to clean up your exposure spreadsheets.
56 hazard datasets
Earthquake catalogs, hurricane and typhoon tracks, station rainfall, reanalysis wind, storm reports, mapped wildfires and power outages.
205 datasets in the data room
A library of risk datasets you can browse and download with your Craton key.
Clean exposure data
Turn a messy schedule of values into clean locations, values and OED codes, and find rows that describe more than one building.
How it works
Run a model in three steps
The steps are the same in the browser and through the API.
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Add your locations
Upload a schedule of values, or drop pins on a map.
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Run a model
Choose an open model and start the run. You can follow its progress.
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Review the results
See average annual loss, the exceedance curve and the assumptions behind them.
Example
Hurricane history for South Florida, 1986 to 2025
One API call returns every season since 1986 for this part of South Florida, from NOAA’s hurricane records.
6 of 40
seasons had hurricane-force wind in this part of South Florida, in NOAA’s records from 1986 to 2025.
Source: NOAA HURDAT2, dataset hurdat2-atlantic, version 2026-09-02. Run backtest-v0:909edf7a1447417a. This chart shows past seasons only and is not a forecast.
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Handles messy spreadsheets
Upload your schedule of values as it is. Craton reads unusual columns, units and formats, and shows you anything it had to guess.
How it handles messy files -
See the model and data behind each result
Every result shows which model and which data produced it, so you can explain it.
What each figure means -
Repeatable results
Running the same inputs again gives the same result, so a change in the numbers comes from a change in your locations, values, data or model version.
About the data
How to read the chart
6 of 40 seasons (15%) brought best-track wind of 64 kt or more, hurricane force, inside the South Florida area (24.5 to 26.5°N, 82 to 79.5°W). Each bar is the strongest wind of its season in that area, banded by Saffir-Simpson category: 64, 83, 96 and 113 kt. Hover over or tap a bar to see its season and the storm.
For developers
A plain HTTP API
Every example is a curl command you can copy. The first one creates your API key, and there is no SDK to install.
curl -sS --fail-with-body -X POST "$CEDE_BASE_URL/signup"
{
"id": "acct_04bda8583c478858885f1f1f",
"plan": "sandbox",
"api_key": {
"id": "key_092122eaa115b21f",
"scheme": "Bearer",
"secret": "cede_sk_…"
}
}
A recorded response, shortened. The real key is shown only once, so it is cut short here.
Next: look up hurricane wind for a location
curl -sS --fail-with-body -H "Authorization: Bearer $CEDE_API_KEY" "$CEDE_BASE_URL/hazard?peril=tropical_cyclone&lat=25.7617&lon=-80.1918"
Returns how strong the wind gets in Miami once every 2, 5, 10 and 20 years, from 40 years of records. See the full script, or get a key from the sign-up page.
Start for free
Sign up with your email. No card needed.
| Runs in the model runner | Free |
|---|---|
| API: per stored object | $0.25 |
| API: per registry model run | $1.00 |
Every API account begins with a free allowance.
Model results are estimates. Each one lists the assumptions and data it is based on. Craton is software. It is not an insurer or a broker and does not sell insurance.