{"uid":"cap_UGueY2uwiLUkY8fMjYN3p","slug":"truthbear-agriculture-region-gauge-3-leg-chain-65cb93cb","name":"TruthBear Agriculture Region Gauge (3-Leg Chain)","description":"[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. $0.25 per call.","url":"https://api.truthbear.co/gauge/agri-region","method":"GET","headers":{},"bodySchema":{"$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":{}}}}},"responseSchema":{"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)"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.25","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.25/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.25","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.25","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_lhglzgsuYFI1ZhJmtjLdv","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.25","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"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.","exampleAgentPrompt":"Can you pull the full agriculture stress chain for us-iowa — check whether the soil drought is translating into actual crop damage using the drought, heat stress, and VHI legs?","exampleUseCases":[{"title":"Corn Belt drought impact assessment","prompt":"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?"},{"title":"Commodity trader crop health check","prompt":"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."},{"title":"Pampas crop stress monitoring","prompt":"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."}],"resultDescription":"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.","failureModes":["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)"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:30:25.742Z","isFirstParty":false}