# Agricultural Region Drought & Crop Stress Gauge

> Agricultural Region Drought & Crop Stress Gauge is a paid API for AI agents from aeml-x402.zeabur.app, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-13).

Returns a three-leg agricultural risk snapshot for a given region: soil drought severity (USDM D0–D4), heat stress / growing degree days (GDD), and crop vegetation health index (VHI), plus a cross-validated narrative on whether drought conditions have propagated to crop stress.

## Facts

- Endpoint: GET https://aeml-x402.zeabur.app/gauge/agri-region
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agricultural-region-drought-crop-stress-gauge-a1589126
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wDMo57oVzQ3EKNRJAisZk

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

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability agricultural-region-drought-crop-stress-gauge-a1589126
```

Example prompt: Pull the agricultural drought and crop stress snapshot for us-iowa — I want to see the USDM drought level, heat stress and growing degree days, the vegetation health index, and whether the drought has actually hit crop condition yet.

## When to prefer this

Choose this endpoint when you need a multi-dimensional, cross-validated agricultural stress picture for a US farming region in a single call — combining USDM drought severity, heat/GDD, and satellite-derived crop VHI with a narrative synthesis. Prefer it over single-signal APIs when you need to know not just whether drought exists, but whether it has propagated to measurable crop damage. Especially valuable for agri-risk screening, supply chain disruption monitoring, or lending/insurance workflows where verifiable, traceable data provenance (ERA5 + NOAA, Ed25519-signed citations) matters. Not a forecast or yield prediction tool — use for observational screening only.

## Known failure modes

- Missing or invalid loc parameter returns an error — loc must be a recognized region code like us-iowa
- Data staleness: some source legs (e.g. USDM monthly updates) may report as 'stale' if official source cadence has not refreshed
- Unknown or unsupported region codes will return no data or an error response
- Payment failure or expired x402 receipt results in 402 response blocking data delivery
- One or more legs may be unavailable if upstream ERA5 or NOAA satellite feeds are delayed

## How this service works

[3-LEG] Agriculture chain, one grain belt (?loc=us-iowa): leading soil drought (USDM D0-D4) -> current heat stress and growing degree days -> realized crop vigour VHI - did the drought actually reach the crop (confirmation gate). A sequential chain, not one reading - confidence = how many legs are lit, in order. Sources: USDM/NDMC, NASA POWER, NOAA STAR. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed.

## Output

A JSON object with: a 'legs' object containing signal readings for drought (USDM D0–D4), heat stress/GDD, and crop VHI — each with current value, observed timestamp, data age, and a verifiable record hash; a cross_line_narrative prose summary describing whether drought stress has translated to crop damage; provenance metadata (data lineage, freshness status, official sources); a _citation object with an Ed25519-signed, offline-verifiable claim; decision_points listing swappable parameters; and honest scope/grade disclosures indicating this is screening-level observational data, not a forecast or decision-grade advisory.

## Request schema (JSON Schema)

```json
{
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "queryParams"
   ],
   "properties": {
    "type": {
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "loc"
     ],
     "properties": {
      "loc": {
       "type": "string",
       "examples": [
        "us-iowa",
        "us-illinois",
        "us-nebraska",
        "us-kansas",
        "ar-pampas",
        "br-matogrosso"
       ],
       "description": "required - location id; full list at free /gauge/preview",
       "x-accepted-values": {
        "all": "https://api.truthbear.co/schemas/gauge-agri-region.input.json",
        "shown": 6,
        "total": 12
       }
      }
     },
     "additionalProperties": false
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "const": "json"
    },
    "example": {}
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agricultural-region-drought-crop-stress-gauge-a1589126/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from aeml-x402.zeabur.app](https://www.zero.xyz/host/aeml-x402.zeabur.app/llms.txt)