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TruthBear Agriculture Region Gauge (3-Leg Chain)
x402
TruthBear Agriculture Region Gauge (3-Leg Chain) is a paid API for AI agents from api.truthbear.co, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-15).
Returns a sequential three-leg agricultural stress chain for a grain belt region: soil drought severity (USDM) → heat stress and growing degree days (NASA POWER) → realized crop vigor VHI (NOAA STAR), with confidence scored by how many legs are lit in order.
Price / call$0.25
Success—
StatusUnknown
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 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. $0.25 per call.
Output
A JSON object containing the three sequential chain legs — (1) USDM soil drought category (D0–D4), (2) NASA POWER heat stress and growing degree day accumulation, (3) NOAA STAR Vegetation Health Index — plus an overall confidence score reflecting how many legs are consecutively lit. Returns 422 no_charge if data is unavailable for the requested region, with no billing charge.
Example use cases
Corn Belt drought impact assessment
“I need to know whether the ongoing drought in us-illinois is actually hurting crop vigor this season — can you run the three-leg ag chain and tell me how many legs are confirmed?”
Commodity trader crop health check
“Pull the agriculture region gauge for us-kansas and tell me whether soil drought, heat stress, and the VHI are all lighting up — I want to know the confidence score before I make a call on corn futures.”
Pampas crop stress monitoring
“Check the agricultural stress chain for ar-pampas and tell me whether the drought signal there has propagated all the way through to realized crop damage based on satellite VHI data.”
Technical details
Endpoint
GEThttps://api.truthbear.co/gauge/agri-regionWhen to prefer
Choose this endpoint when you need a cross-agency, sequentially confirmed view of agricultural stress — not just a single drought or NDVI reading, but a confirmation gate that checks whether soil drought has actually propagated to crop damage. Ideal when downstream decisions (commodity trading, insurance, food supply monitoring) require multi-source corroboration rather than a single signal. Prefer over raw USDM or NDVI queries when chain confidence and ordered confirmation matter.
Side effects
- 422 no_charge: no data available for the requested location, not billed
- Invalid loc parameter: location ID not in accepted list returns an error
- Partial chain: one or more upstream data sources temporarily unavailable reduces confidence score
- Network timeout from upstream agencies (USDM, NASA POWER, NOAA STAR)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"legs": {
"heat": {
"band": "below_warning",
"source_ref": "https://open-meteo.com/en/docs (temperature_2m_max/min; GDD base 10 degC 86/50)",
"record_hash": "sha256:454bc7664c8f82954a12a52f1f425223c1dfb9d72ced46320a22a804cd0e8271"
},
"drought": {
"band": "normal",
"source_ref": "https://open-meteo.com/en/docs/historical-weather-api(ERA5 soil moisture)",
"record_hash": "sha256:5c5f46fb816028010748b0c081adade34d0330efd1b07401410e697d03b6580c"
},
"crop_vhi": {
"band": "normal",
"source_ref": "https://www.star.nesdis.noaa.gov/smcd/emb/vci/VH/(get_TS_admin.php CROP VHI)",
"record_hash": "sha256:3a2dae57b8bb21c1b8cf83bb25d2aace7204dc9a80fc62782a1f1621183a67d4"
}
},
"name": "US Corn Belt - Iowa",
"grade": "screening-level, not decision-grade",
"scope": {
"full": "https://api.truthbear.co/scope/v1",
"verifiability": "unknown",
"monitoring_not_forecast": true,
"intelligence_not_command": true
},
"nature": "This API supplies data organisation and trend description only. It is not a recommendation to act; the decision is yours. Purely descriptive - no judgement, no prediction. Official source plus record_hash; verify with the free /gauge/verify.",
"location": "us-iowa",
"provenance": {
"freshness": "stale",
"age_hours_now": 423,
"freshness_basis": "cadence=default; fresh<=24h; recent<=192h; dead_source>1440h; age_basis=request-time(now minus observed_at)"
}
}
}Tags
x402
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