{"uid":"cap_NsrmHvB-mFA190Yfw-_Wl","slug":"halowerk-baltic-land-poland-soil-nitrogen-0-5-cm-79ea8edd","name":"HALOWERK Baltic Land – Poland Soil Nitrogen (0-5 cm)","description":"Mean SoilGrids total nitrogen for the 0-5 cm layer. The coordinate is validated against the Natural Earth boundary for Poland; results outside it are rejected before payment.","url":"https://baltikum.halowerk.com/v1/pl-soil-nitrogen","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"latitude":{"type":"number","maximum":72.5,"minimum":34,"description":"WGS84 latitude inside the published European coverage."},"longitude":{"type":"number","maximum":40.5,"minimum":-31.5,"description":"WGS84 longitude inside the published European coverage."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.004","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":"$0.004/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.004","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_lfrlCHbsGHFxKgpiO3e7G","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.004","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 total nitrogen content for the 0-5 cm topsoil layer at a given WGS84 coordinate within Poland.","exampleAgentPrompt":"What's the mean total nitrogen in the top 5 cm of soil at latitude 52.23, longitude 21.01 in Poland?","exampleUseCases":[{"title":"Agricultural field fertility assessment","prompt":"I'm evaluating a farming plot near Poznań — can you look up the topsoil nitrogen level at latitude 52.41, longitude 16.93 in Poland?"},{"title":"Environmental soil quality monitoring","prompt":"For a nature reserve monitoring project, I need the mean total nitrogen in the 0-5 cm soil layer at coordinates 50.06 latitude, 19.94 longitude in Poland."},{"title":"Precision agriculture input planning","prompt":"We're planning fertilizer applications and need to know the baseline soil nitrogen at latitude 51.75, longitude 19.45 — that's a field in central Poland."}],"resultDescription":"A numeric value representing the mean SoilGrids total nitrogen content (in g/kg or cg/kg) for the 0-5 cm topsoil layer at the queried coordinate. The response is only returned for coordinates that pass validation against the Natural Earth boundary of Poland; out-of-boundary coordinates are rejected before any charge is applied.","failureModes":["Coordinate outside Poland boundary — request rejected before payment, error indicating invalid location","Latitude or longitude out of the European coverage range (lat 34–72.5, lon -31.5–40.5) — validation error","Missing required latitude or longitude — schema validation failure","SoilGrids data unavailable for remote or edge-boundary locations — null or error response","Network timeout or service unavailability — HTTP 5xx error"],"whenToPreferThis":"Choose this endpoint when you need point-level SoilGrids total nitrogen data specifically for locations within Poland and want coordinate boundary validation built in before payment. It is ideal for agricultural analysis, environmental monitoring, or land-use planning workflows focused on Poland. Prefer this over generic SoilGrids API calls if you want pay-per-query pricing with automatic Poland-boundary enforcement and consistent topsoil (0-5 cm) depth standardization.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T19:01:18.564Z","isFirstParty":false}