{"uid":"cap_fUrkC-Ge6-wg8miWagFlf","slug":"halowerk-europe-land-grassland-share-parcel-polygon-8a0a2d24","name":"HALOWERK Europe Land – Grassland Share (Parcel Polygon)","description":"Share of ESA WorldCover 2021 pixels classified as grassland. 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-grassland-share-parcel","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"polygon":{"type":"array","items":{"type":"array","items":[{"type":"number","maximum":40.5,"minimum":-31.5},{"type":"number","maximum":72.5,"minimum":34}],"maxItems":2,"minItems":2,"additionalItems":false},"maxItems":100,"minItems":3,"description":"WGS84 polygon ring. The closing coordinate is optional; maximum span is 0.25 degrees."}}},"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_yYNfnlWD-6Oi1nMEsOxar","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 share of ESA WorldCover 2021 pixels classified as grassland within a user-supplied WGS84 polygon, covering 30 European countries.","exampleAgentPrompt":"What share of this parcel is classified as grassland? The polygon coordinates are [[-3.2,51.5],[-3.19,51.5],[-3.19,51.51],[-3.2,51.51]] — use ESA WorldCover data for the European land cover analysis.","exampleUseCases":[{"title":"Agricultural subsidy eligibility check","prompt":"I need to know what percentage of this field is grassland before submitting our EU agri-environment scheme application — the parcel boundary is [[-0.45,52.10],[-0.44,52.10],[-0.44,52.11],[-0.45,52.11]]. Can you calculate the grassland share for me?"},{"title":"Carbon credit land baseline assessment","prompt":"We're setting up a carbon sequestration project and need to establish the grassland baseline for our land parcel. The polygon vertices are [[18.5,47.3],[18.52,47.3],[18.52,47.32],[18.5,47.32]] — what fraction of that area is currently classified as grassland?"},{"title":"Real estate land use due diligence","prompt":"Before we finalize the purchase of this plot in Poland, can you check what proportion of the land within these coordinates [[21.1,52.2],[21.12,52.2],[21.12,52.22],[21.1,52.22]] is grassland according to satellite land cover data?"}],"resultDescription":"A standardized fractional or percentage value indicating the share of pixels within the supplied polygon classified as grassland in the ESA WorldCover 2021 dataset, consistent across all 30 covered European countries.","failureModes":["Polygon outside supported European extent (lon -31.5 to 40.5, lat 34 to 72.5) returns an error","Polygon with fewer than 3 vertices or more than 100 vertices is rejected","Polygon span exceeding 0.25 degrees is rejected as too large","Invalid coordinate format or out-of-range values cause validation failure","Payment failure via x402 protocol prevents endpoint execution"],"whenToPreferThis":"Choose this endpoint when you need grassland land cover share for an irregular polygon boundary (e.g. a real cadastral parcel) rather than a fixed-radius circle. Use it over the circular-buffer grassland endpoint when parcel shape fidelity matters. It is well-suited for compliance, subsidy, or environmental audit workflows where exact parcel geometry is required across European countries covered by ESA WorldCover 2021.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:41:26.446Z","isFirstParty":false}