# Services from space.halowerk.com on Zero

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

## Services

- [Halowerk Geomagnetic Storm Risk Classifier](https://www.zero.xyz/c/halowerk-geomagnetic-storm-risk-classifier-adb1d681/llms.txt): $0.002/call via x402. Maps caller-supplied Kp and Dst indices to geomagnetic storm severity bands (G0–G5) and combines them with geomagnetic latitude and infrastructure class to assess impact risk.
- [Halowerk Launch Weather Rule Checker](https://www.zero.xyz/c/halowerk-launch-weather-rule-checker-a951981c/llms.txt): $0.003/call via x402. Validates observed weather conditions against caller-supplied launch safety limits and returns every failed rule
- [Halowerk Satellite Pass Predictor](https://www.zero.xyz/c/halowerk-satellite-pass-predictor-5012aa36/llms.txt): $0.004/call via x402. Propagates a circular two-body orbit from orbital elements and samples when a satellite is visible above the horizon from a specified ground station location.
- [Halowerk Space Debris Collision Check](https://www.zero.xyz/c/halowerk-space-debris-collision-check-f197e5bb/llms.txt): $0.004/call via x402. Analytically propagates two Cartesian states with constant velocity to compute time of closest approach and determine whether the miss distance falls within the combined hard-body radii of the two objects.
- [Halowerk Crop Yield NDVI Estimator](https://www.zero.xyz/c/halowerk-crop-yield-ndvi-estimator-2c859856/llms.txt): $0.003/call via x402. Estimates crop yield by computing mean NDVI and an OLS daily NDVI trend from time-series observations, then applying a caller-supplied linear model (intercept + mean_coefficient×mean_NDVI + trend_coefficient×daily_trend).
- [Halowerk Dark Fleet Detection Scorer](https://www.zero.xyz/c/halowerk-dark-fleet-detection-scorer-8101ef49/llms.txt): $0.003/call via x402. Computes a bounded dark-fleet suspicion score for vessel tracks by combining AIS gap duration, unmatched satellite detections, night-observation fraction, and position discrepancy into a single normalized metric.
- [Halowerk Methane Leak Satellite Flux Estimator](https://www.zero.xyz/c/halowerk-methane-leak-satellite-flux-estimator-1266ad7e/llms.txt): $0.004/call via x402. Computes a methane emission flux proxy and optional kg/h estimate from caller-supplied satellite pixel enhancement data, wind speed, plume orientation, and a mass conversion factor.
- [Halowerk Orbit Decay Estimator](https://www.zero.xyz/c/halowerk-orbit-decay-estimator-23b7f8ff/llms.txt): $0.004/call via x402. Estimates altitude loss and time-to-reentry for a circular orbit using a simplified drag model with caller-supplied atmospheric density and ballistic coefficient
- [SAR Image Connected Component Extractor](https://www.zero.xyz/c/sar-image-connected-component-extractor-c47fd272/llms.txt): $0.004/call via x402. Labels four-neighbor connected components in a 2-D numeric grid above a caller-defined threshold, returning area, bounding box, peak, and mean value for each component.
- [Night Lights Economic Index Estimator](https://www.zero.xyz/c/night-lights-economic-index-estimator-9b502147/llms.txt): $0.003/call via x402. Fits OLS regression to VIIRS/DMSP night-light radiance observations over time, converts the slope to an annual radiance change rate, and applies a caller-supplied economic elasticity to estimate an economic index change.

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)