# Services from agri.halowerk.com on Zero

> agri.halowerk.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.halowerk.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/agri.halowerk.com/health.json

## Services

- [Vertical Farm HVAC Load Calculator](https://www.zero.xyz/c/vertical-farm-hvac-load-calculator-1a1c79f5/llms.txt): $0.004/call via x402. Computes steady-state HVAC sizing loads for a vertical farm by summing heat contributions from lighting, equipment, people, envelope, and ventilation, and converts evapotranspiration into a latent moisture-removal load.
- [Halowerk Agri Fertilizer Map](https://www.zero.xyz/c/halowerk-agri-fertilizer-map-58df2d68/llms.txt): $0.004/call via x402. Computes per-cell fertilizer application rates (N, P, K) by subtracting available soil nutrients from caller-supplied targets and dividing deficits by recovery fractions, returning per-hectare rates and area totals for each field cell.
- [Halowerk Agri Soil Moisture Bucket Balance Model](https://www.zero.xyz/c/halowerk-agri-soil-moisture-bucket-balance-model-c121cd0d/llms.txt): $0.003/call via x402. Runs a deterministic daily root-zone water bucket balance, computing soil moisture storage, drainage, and water availability from rainfall, irrigation, evapotranspiration, runoff, and field capacity inputs.
- [Seed Germination Rate & Wilson Score Interval Calculator](https://www.zero.xyz/c/seed-germination-rate-wilson-score-interval-calculator-4f0c6011/llms.txt): $0.002/call via x402. Computes the observed germination rate and a Wilson score confidence interval from germinated and tested seed counts using a caller-supplied normal critical value.
- [Agri Halowerk Pest Outbreak Risk Score](https://www.zero.xyz/c/agri-halowerk-pest-outbreak-risk-score-cc998eec/llms.txt): $0.003/call via x402. Computes a deterministic pest outbreak risk score by accumulating degree-days above a base temperature and combining threshold progress with mean humidity and host availability.
- [Agri Halowerk Supply Spoilage Calculator](https://www.zero.xyz/c/agri-halowerk-supply-spoilage-calculator-3273be09/llms.txt): $0.003/call via x402. Converts temperature history segments into equivalent ageing at a reference temperature using a Q10 factor, then compares accumulated ageing against nominal shelf life to estimate spoilage status.
- [Agri Halowerk Harvest Window Calculator](https://www.zero.xyz/c/agri-halowerk-harvest-window-calculator-5ef5f48d/llms.txt): $0.003/call via x402. Accumulates degree-days from caller-supplied daily temperatures onto an existing total, then identifies harvest windows where maturity threshold, crop moisture range, and maximum rainfall constraints are all satisfied.
- [Agri Halowerk Carbon Stock Calculator](https://www.zero.xyz/c/agri-halowerk-carbon-stock-calculator-d51348ce/llms.txt): $0.003/call via x402. Converts soil area, sampling depth, bulk density, and initial/final organic carbon percentages into soil carbon stock estimates and a gross CO2-equivalent difference using the stock-difference method.
- [Livestock Vital Signs Deviation Screener](https://www.zero.xyz/c/livestock-vital-signs-deviation-screener-ff2e3f2b/llms.txt): $0.003/call via x402. Compares temperature, heart rate, and activity ratio readings for livestock against caller-supplied reference ranges, returning normalized deviations and a screening band for each animal.
- [Drone Spray Path Planner](https://www.zero.xyz/c/drone-spray-path-planner-5a93efb6/llms.txt): $0.004/call via x402. Generates a parallel boustrophedon (alternating-direction) spray path over a rectangular field area given swath width and overlap fraction.

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

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