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SYNTHORA Historical Weather
x402
SYNTHORA Historical Weather is a paid API for AI agents from api.hergertsynthora.com, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-15).
Returns verified historical weather data (tmax, tmin, precipitation, max wind) for any location and date from 1940 to ~5 days ago using ERA5 reanalysis data.
Price / call$0.03
Success—
StatusUnknown
How this service works
SYNTHORA historical-weather: verified historical weather for any place and date (1940 → ~5 days ago) from the ERA5 reanalysis — tmax/tmin, precipitation, max wind. For climate-market backtesting and claim verification. Source: open-meteo archive, free, no key. $0.005 USDC x402 Base.
Output
Returns ERA5-sourced historical weather metrics for the specified location and date, including daily maximum temperature, minimum temperature, total precipitation, and maximum wind speed, sourced from the Open-Meteo archive.
Example use cases
Insurance claim weather verification
“I need to verify the weather conditions in Houston, Texas on February 15, 2021 — specifically the minimum temperature, precipitation, and max wind speed — for an insurance claim review.”
Climate-linked derivatives backtesting
“Pull me the daily tmax, tmin, and precipitation for Paris from June 1 to August 31, 2003 so I can backtest a heat-degree-day financial contract against that summer's historic heatwave.”
Agricultural yield historical analysis
“What was the rainfall and temperature range in Córdoba, Argentina during January 2018? I need ERA5 reanalysis data to cross-check crop yield records from that growing season.”
Technical details
Endpoint
POSThttps://api.hergertsynthora.com/v1/historical-weatherWhen to prefer
Use this endpoint when you need verified, ERA5-quality historical weather data for any global location going back to 1940, especially for climate-market backtesting, insurance claim verification, or any application requiring authoritative reanalysis data rather than station-based or modeled forecasts.
Side effects
- Date out of supported range (pre-1940 or within last ~5 days) returns an error
- Ambiguous or unresolvable location string may return an error or incorrect geocoding
- Malformed input string causes a parse failure
- Network timeout or upstream Open-Meteo archive unavailability
- Payment failure via x402 protocol blocks the request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | string | SYNTHORA historical-weather: verified historical weather for any place and date (1940 → ~5 days ago) from the ERA5 reanalysis — tmax/tmin, precipitation, max wind. For climate-market backtesting and c |
Tags
x402
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