[3-LEG] Agriculture chain, one grain belt (?loc=us-iowa): leading soil drought (USDM D0-D4
[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.
250000 (raw units)
price
17
calls / 30d
2
unique payers
2026-09-07
updated
Provider
api.truthbear.co · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
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"network": "eip155:8453",
"payTo": "0x2d16a243ba9facc6ac85519d5efad2149dc4c6c3",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "250000",
"maxTimeoutSeconds": 300
},
{
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "8qEn3Y3GPXdQ28LHshPa4UYeD8V38Lq9b4jCRirQAY3n",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"amount": "250000",
"maxTimeoutSeconds": 300
}
]Output schema
{
"bazaar": {
"discoverable": true,
"info": {
"input": {
"example": {
"format": "thin",
"loc": "us-iowa"
},
"exampleRequest": "/gauge/agri-region?loc=us-iowa&format=thin",
"method": "GET",
"queryParams": {
"loc": "required - location id; full list at free /gauge/preview"
},
"type": "http"
},
"output": {
"example": {
"grade": "screening-level, not decision-grade",
"legs": {
"crop_vhi": {
"band": "normal",
"record_hash": "sha256:3a2dae57b8bb21c1b8cf83bb25d2aace7204dc9a80fc62782a1f1621183a67d4",
"source_ref": "https://www.star.nesdis.noaa.gov/smcd/emb/vci/VH/(get_TS_admin.php CROP VHI)"
},
"drought": {
"band": "normal",
"record_hash": "sha256:5c5f46fb816028010748b0c081adade34d0330efd1b07401410e697d03b6580c",
"source_ref": "https://open-meteo.com/en/docs/historical-weather-api(ERA5 soil moisture)"
},
"heat": {
"band": "below_warning",
"record_hash": "sha256:454bc7664c8f82954a12a52f1f425223c1dfb9d72ced46320a22a804cd0e8271",
"source_ref": "https://open-meteo.com/en/docs (temperature_2m_max/min; GDD base 10 degC 86/50)"
}
},
"location": "us-iowa",
"name": "US Corn Belt - Iowa",
"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": {
"age_hours_now": 423,
"freshness": "stale",
"freshness_basis": "cadence=default; fresh<=24h; recent<=192h; dead_source>1440h; age_basis=request-time(now minus observed_at)"
},
"scope": {
"full": "https://api.truthbear.co/scope/v1",
"intelligence_not_command": true,
"monitoring_not_forecast": true,
"verifiability": "unknown"
}
},
"type": "json"
}
},
"outputSchemaRef": "/manifest",
"priceUsd": "$0.25",
"priceUsdNumber": 0.25,
"routeTemplate": "/gauge/agri-region",
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"additionalProperties": false,
"properties": {
"loc": {
"description": "required - location id; full list at free /gauge/preview",
"examples": [
"us-iowa",
"us-illinois",
"us-nebraska",
"us-kansas",
"ar-pampas",
"br-matogrosso"
],
"type": "string",
"x-accepted-values": {
"all": "https://api.truthbear.co/schemas/gauge-agri-region.input.json",
"shown": 6,
"total": 12
}
}
},
"required": [
"loc"
],
"type": "object"
},
"type": {
"const": "http"
}
},
"required": [
"type",
"method",
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"type": "object"
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"output": {
"properties": {
"example": {},
"type": {
"const": "json"
}
},
"required": [
"type"
],
"type": "object"
}
}
}
}
}Use it
curl
curl "https://api.truthbear.co/gauge/agri-region" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://api.truthbear.co/gauge/agri-region");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://api.truthbear.co/gauge/agri-region")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/4439.json, and this resource appears in /discovery/resources and /discovery/search.