# Services from agri-calc.x402tookit.com on Zero

> agri-calc.x402tookit.com serves 10 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/agri-calc.x402tookit.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/agri-calc.x402tookit.com/health.json

## Services

- [Farm & Garden Calc – Hargreaves Reference Evapotranspiration (ET₀)](https://www.zero.xyz/c/farm-garden-calc-hargreaves-reference-evapotranspiration-et-3b4393b6/llms.txt): $0.02/call via x402. Calculates reference evapotranspiration (ET₀) in mm/day and inches/day using the Hargreaves method from daily max/min temperatures, latitude, and day of year.
- [Farm & Garden Calc – Growing Degree Days (GDD)](https://www.zero.xyz/c/farm-garden-calc-growing-degree-days-gdd-90444770/llms.txt): $0.02/call via x402. Calculates growing degree days from daily max/min temperatures using either the modified corn 86/50°F method or the standard average method.
- [Farm & Garden Calc – Livestock Feed Ration Calculator](https://www.zero.xyz/c/farm-garden-calc-livestock-feed-ration-calculator-7fb2405d/llms.txt): $0.02/call via x402. Calculates daily and period livestock feed requirements (as-fed and dry-matter) from head count, body weight, intake rate, feed moisture, and waste percentage, with optional bale count output.
- [Farm & Garden Calc: N-P-K Blend Analyzer](https://www.zero.xyz/c/farm-garden-calc-n-p-k-blend-analyzer-472ede03/llms.txt): $0.02/call via x402. Calculates the blended N, P2O5, and K2O percentages of a dry fertilizer mix from component analysis labels and weights.
- [Farm & Garden Calc: Irrigation Run Time & Water Volume](https://www.zero.xyz/c/farm-garden-calc-irrigation-run-time-water-volume-667538a3/llms.txt): $0.02/call via x402. Calculates irrigation run time (hours and minutes) and gross/net water volume required to apply a target depth over a given area at a specified flow rate and system efficiency.
- [Farm & Garden Calc – Grazing Stocking Rate Calculator](https://www.zero.xyz/c/farm-garden-calc-grazing-stocking-rate-calculator-b51a4b21/llms.txt): $0.02/call via x402. Calculates grazing carrying capacity in animal unit months (AUM) from pasture acres, forage yield, utilization percent, and grazing days, with an optional herd size check.
- [Farm & Garden Plant Count Calculator](https://www.zero.xyz/c/farm-garden-plant-count-calculator-e9371416/llms.txt): $0.02/call via x402. Calculates the number of plants and seeds needed for a given planted area based on row spacing, in-row spacing, layout pattern, and germination rate.
- [Farm & Garden Calc – Fertilizer Rate Calculator](https://www.zero.xyz/c/farm-garden-calc-fertilizer-rate-calculator-cf8d4fde/llms.txt): $0.02/call via x402. Calculates the fertilizer product application rate and total quantity needed to hit a target N, P2O5, or K2O nutrient rate, and reports all nutrients supplied by that product rate.
- [Farm & Garden Calc – Lime Rate Estimator](https://www.zero.xyz/c/farm-garden-calc-lime-rate-estimator-217d740a/llms.txt): $0.02/call via x402. Estimates illustrative agricultural lime application rate to raise soil pH, based on soil texture, current and target pH, product strength, and incorporation depth.
- [Farm & Garden Calc – Crop Yield Unit Converter](https://www.zero.xyz/c/farm-garden-calc-crop-yield-unit-converter-30266d77/llms.txt): $0.02/call via x402. Converts crop yield between bushels per acre and kg per hectare for corn (56 lb/bu), wheat, and soybeans (60 lb/bu)

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

- [Zero catalog index](https://www.zero.xyz/llms.txt)