{"uid":"cap_FrL-Im8_ZZhEXj9wcSDwG","slug":"halowerk-europe-land-soil-clay-fraction-parcel-polygon-63ec9903","name":"HALOWERK Europe Land – Soil Clay Fraction (Parcel Polygon)","description":"Mean SoilGrids clay fraction for the 0-5 cm layer. The service evaluates the bounded polygon supplied by the caller and returns standardized units across all 30 covered countries.","url":"https://euroland.halowerk.com/v1/europe-soil-clay-parcel?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType"],"properties":{"type":{"const":"http"},"method":{"const":"POST"},"bodyType":{"const":"json"}},"additionalProperties":true},"output":{"type":"object","required":["type","example"],"properties":{"type":{"type":"string"},"example":{}}}},"additionalProperties":true},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.006","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":"$0.006/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.006","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.006","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_sMPVCwNHK_aBBOm6av7hG","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.006","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the mean SoilGrids clay fraction (0–5 cm depth) for a user-supplied WGS84 polygon parcel across 30 European countries.","exampleAgentPrompt":"What's the mean topsoil clay fraction for my field in the Netherlands? The parcel corners are at roughly [4.85, 52.30], [4.86, 52.30], [4.86, 52.31], [4.85, 52.31] — I need the 0–5 cm SoilGrids clay value.","exampleUseCases":[{"title":"Pre-purchase soil assessment for farmland","prompt":"I'm looking at buying a field in Burgundy, France — the parcel vertices are [4.80,47.10],[4.81,47.10],[4.81,47.11],[4.80,47.11]. Can you tell me the mean clay content in the top 5 cm so I know what kind of soil I'm dealing with?"},{"title":"Precision agriculture crop suitability check","prompt":"Before we decide what to plant this season, can you pull the SoilGrids clay fraction for the 0–5 cm layer for our plot in Bavaria? The polygon coordinates are [11.50,48.20],[11.51,48.20],[11.51,48.21],[11.50,48.21]."},{"title":"Carbon sequestration baseline mapping","prompt":"We're building a soil carbon model and need the topsoil clay percentage for several parcels in the Po Valley, Italy. Start with the polygon [10.20,45.05],[10.21,45.05],[10.21,45.06],[10.20,45.06] and give me the mean clay fraction at 0–5 cm depth."}],"resultDescription":"A numeric value representing the mean clay fraction (standardized units) in the 0–5 cm soil layer for the supplied polygon, derived from ISRIC SoilGrids, covering 30 European countries.","failureModes":["Polygon spans more than 0.25 degrees — request rejected with validation error","Fewer than 3 coordinate pairs supplied — invalid polygon error","Coordinates fall outside the 30-country European coverage area — out-of-bounds error","Polygon self-intersects or is malformed — geometry error","Payment not included or insufficient — HTTP 402 payment required"],"whenToPreferThis":"Choose this endpoint when you need parcel-level (polygon-bounded) mean clay fraction data for the 0–5 cm topsoil layer within the 30 European countries covered by HALOWERK. It is ideal when precise parcel boundaries are known and standardized SoilGrids-sourced clay values are required. Prefer this over point-based lookups when the spatial aggregation across a field or plot boundary matters for decisions like crop planning, land valuation, or environmental modelling.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T07:39:27.462Z","isFirstParty":false,"canonicalSlug":"halowerk-europe-land-soil-clay-fraction-parcel-polygon-63ec9903"}