{"uid":"cap_zZ7ZexYEJNs_rHLpV-2pr","slug":"halowerk-southern-land-portugal-maximum-slope-99cee3bf","name":"HALOWERK Southern Land – Portugal Maximum Slope","description":"Maximum adjacent-cell surface gradient across the analysis grid. The coordinate is validated against the Natural Earth boundary for Portugal; results outside it are rejected before payment.","url":"https://suedland.halowerk.com/v1/pt-max-slope","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":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_mSZyKJOJ5kkyVYbYoVvSj","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the maximum adjacent-cell surface gradient across a local analysis grid for a given coordinate within Portugal","exampleAgentPrompt":"What is the maximum surface slope gradient at latitude 38.72, longitude -9.14 in Portugal? I need to know how steep the terrain is at that point.","exampleUseCases":[{"title":"Agricultural land suitability screening","prompt":"I'm looking at a plot in Portugal near latitude 37.5, longitude -8.2 — can you tell me the maximum slope gradient there so I know if the terrain is too steep for mechanized farming?"},{"title":"Construction site terrain assessment","prompt":"Before we proceed with planning, can you check the maximum adjacent-cell slope at latitude 41.1, longitude -8.6 in Portugal? We need to know how steep it gets at that site."},{"title":"Vineyard location scouting","prompt":"I'm scouting vineyard sites in the Douro Valley — what's the maximum surface gradient at latitude 41.15, longitude -7.65 in Portugal? Steeper slopes can be fine for vines but I need the exact number."}],"resultDescription":"A numeric value representing the maximum adjacent-cell surface gradient (slope) computed across the local analysis grid at the provided coordinate. Results are only returned for coordinates validated within the Natural Earth boundary of Portugal; coordinates outside Portugal are rejected before any charge is applied.","failureModes":["Coordinate outside Portugal boundary — request rejected before payment with a validation error","Coordinate within European bounding box but outside Portugal — rejected by Natural Earth boundary check","Latitude or longitude out of the accepted European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation error","Missing required latitude or longitude parameter — returns parameter error","Network or server error — non-2xx HTTP response with no result"],"whenToPreferThis":"Use this endpoint when you need a precise maximum terrain slope metric for a specific coordinate in Portugal. It is ideal for land suitability assessments, construction planning, agricultural analysis, or environmental studies where steepness of terrain is a key factor. Prefer this over general DEM services when you need the adjacent-cell maximum gradient specifically and are working within Portugal's boundaries.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:41:20.745Z","isFirstParty":false}