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Farm & Garden Calc – Growing Degree Days (GDD)
x402
Farm & Garden Calc – Growing Degree Days (GDD) is a paid API for AI agents from agri-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).
Calculates growing degree days from daily max/min temperatures using either the modified corn 86/50°F method or the standard average method.
Price / call$0.02
Success—
StatusUnknown
How this service works
Growing degree days from daily max and min temperatures: modified corn 86/50 F method or the simple standard average.
Output
Returns an array of daily GDD values, a cumulative GDD array, the total accumulated GDD, the method and base/upper temperatures used, the temperature unit, a human-readable summary, and optionally reasons or warnings about the calculation.
Example use cases
Corn phenology tracking for season
“I've got two weeks of temperature data for my cornfield. Daily highs: 85,88,90,83,79,86,91,88,84,82,87,89,92,86 and daily lows: 54,57,60,50,48,52,56,55,51,49,53,58,61,55. Calculate cumulative GDD using the modified corn 86/50 F method so I can estimate where my crop is in development.”
Home garden heat unit accumulation
“Can you compute growing degree days for my tomato garden this month using the standard method with a base of 50°F? My daily highs were 78,82,80,75,77,83,85,81 and lows were 55,58,56,52,54,59,61,57.”
Celsius GDD calculation for wheat crop
“Calculate GDD in Celsius for my wheat field using the standard method with a base of 10°C. Max temps: 22,25,27,20,18,24,26 and min temps: 10,12,14,9,8,11,13.”
Technical details
Endpoint
GEThttps://agri-calc.x402tookit.com/gdd?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to compute growing degree days from raw daily temperature observations, especially when you want the industry-standard modified corn 86/50°F method with upper and lower temperature clamping. It is ideal for tracking crop phenological development, scheduling agricultural operations, or building season-long GDD accumulation charts from historical or forecast temperature data.
Side effects
- Missing tmax or tmin parameters returns an error
- Mismatched count between tmax and tmin arrays causes failure
- Invalid temperature values or non-numeric strings cause parsing errors
- Unsupported method string (not 'modified' or 'standard') may result in default fallback or error
- Unsupported unit string (not 'F' or 'C') may cause unexpected behavior
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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