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TruthBear Drought Region 3-Leg Chain
x402
TruthBear Drought Region 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 2026-09-14).
Returns a sequential three-leg drought assessment for a US region: precipitation deficit and soil moisture leading indicators, current USDM official drought class and coverage, and streamflow/impact confirmation.
Price / call$0.25
Success—
StatusUnknown
How this service works
[3-LEG] Drought chain, one drought region (?entity=us-california): leading precipitation deficit, soil moisture and snowpack -> current the OFFICIAL US Drought Monitor class and area coverage -> realized streamflow and impact (confirmation gate). A chain, not one reading: confidence = how many legs are lit, in order. Sources: USDM/NDMC, USGS. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed. $0.25 per call.
Output
A sequential three-part drought assessment JSON object containing: (1) leading indicators — precipitation deficit, soil moisture, and snowpack status; (2) official USDM drought class (D0–D4) and percentage area coverage; (3) streamflow and realized impact as a confirmation gate. A confidence score reflects how many of the three legs returned valid data. Returns HTTP 422 with no charge if no data is available for the requested region.
Example use cases
Agricultural water planning for California
“Check the official drought status for California right now — I need the USDM drought class, area coverage, and whether soil moisture and streamflow are backing it up.”
Southwest water risk briefing
“Give me the drought assessment for the US Southwest, including leading indicators like precipitation deficit and snowpack, the current USDM classification, and the streamflow confirmation.”
Corn Belt crop stress monitoring
“What does the three-leg drought chain show for the US Corn Belt? I need the leading precipitation and soil moisture signals, the current official drought monitor class, and the streamflow impact reading.”
Technical details
Endpoint
GEThttps://api.truthbear.co/gauge/drought-regionWhen to prefer
Choose this endpoint when you need an authoritative, multi-source drought assessment that combines USDM official classifications with leading hydrological indicators (soil moisture, snowpack, precipitation deficit) and confirms with realized streamflow data. Prefer this over a simple weather or precipitation endpoint when you need drought severity classification, area coverage, and impact confirmation in a single structured call. Best for agents monitoring water stress, agricultural risk, or regional environmental conditions in the US.
Side effects
- 422 no_charge returned when no data is available for the requested entity — not billed
- Invalid or unrecognized entity ID results in an error; use GET /gauge/catalog?signal_id=<signal_id> to retrieve valid entity list
- Partial data may reduce confidence score if only some legs return data
- Network or upstream USDM/USGS outage may delay or prevent data retrieval
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"legs": {
"status": {
"band": "D0-abnormally-dry",
"source_ref": "https://droughtmonitor.unl.edu/",
"record_hash": "sha256:e69894d0ac7054f477bc1e62e906bc98be89ae3ceeb06aa71506be150fb0312a"
},
"impact_cascade": {
"band": "emerging",
"source_ref": "https://www.drought.gov/",
"record_hash": "sha256:7ae14db69710e919ab1517129ef8dc347820b4b6b9402fa174c1ef195271ddb6"
},
"onset_pressure": {
"band": "ED3-extreme-demand",
"source_ref": "https://www.drought.gov/data-maps-tools/evaporative-demand-drought-index-eddi",
"record_hash": "sha256:931c7e44e74d37b1eaf30f8fe08179882b621904f43e86772cc530bf0c577cca"
},
"season_timeline": {
"band": "above-normal",
"source_ref": null,
"record_hash": null
}
},
"name": "US — California (evaporative-demand onset)",
"grade": "screening-level, not decision-grade",
"scope": {
"full": "https://api.truthbear.co/scope/v1",
"verifiability": "unknown",
"monitoring_not_forecast": true,
"intelligence_not_command": true
},
"entity": "us-california",
"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.",
"provenance": {
"freshness": "recent",
"age_hours_now": 156,
"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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