{"uid":"cap_eKufjHCmWD8Wf2Lafu8wJ","slug":"halowerk-nordic-land-surface-aspect-dominant-gradient-direction-c9050ff9","name":"HALOWERK Nordic Land – Surface Aspect (Dominant Gradient Direction)","description":"Circular direction of the dominant surface gradient, clockwise from north. The coordinate is validated against the Natural Earth boundary for Norway; results outside it are rejected before payment.","url":"https://nordland.halowerk.com/v1/no-aspect","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_dkpDHutwY8Y6MdX1Styub","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 circular direction (in degrees, clockwise from north) of the dominant surface gradient for a given coordinate within Norway.","exampleAgentPrompt":"What direction does the dominant surface slope face at latitude 60.3 and longitude 5.2 in Norway? I need the aspect in degrees clockwise from north.","exampleUseCases":[{"title":"Solar panel site suitability assessment","prompt":"I'm evaluating a potential solar installation site at 59.9 degrees north, 10.7 degrees east in Norway — can you tell me which direction the terrain faces there so I know if it gets good south-facing sun exposure?"},{"title":"Avalanche risk terrain classification","prompt":"For a mountain rescue planning project, I need the dominant slope aspect at latitude 68.4, longitude 17.8 in Norway — which direction does the surface gradient point, clockwise from north?"},{"title":"Agricultural microclimate analysis","prompt":"I'm studying microclimate conditions for a farm at 63.1°N, 9.4°E in Norway. What is the aspect angle of the terrain there — I need to know which direction the slope faces to model frost risk."}],"resultDescription":"A numeric value representing the dominant surface gradient direction in degrees, measured clockwise from north (0°=North, 90°=East, 180°=South, 270°=West), for the queried coordinate within Norway. Coordinates outside Norway's Natural Earth boundary are rejected before payment is processed.","failureModes":["Coordinate outside Norway's Natural Earth boundary — request rejected before payment, error returned indicating out-of-coverage area","Latitude or longitude outside the published European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation error","Flat terrain with no discernible gradient — may return null or a sentinel value","Network timeout or service unavailability — generic 5xx error","Malformed JSON body — 400 validation error"],"whenToPreferThis":"Choose this endpoint when you need terrain aspect (slope-facing direction) specifically for coordinates within Norway and want pre-payment boundary validation to avoid wasted charges. It is part of a suite of Norwegian land-surface endpoints (soil, slope, texture) from the same provider, making it ideal when you are already using sibling endpoints from HALOWERK Nordic Land for multi-layer terrain analysis.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:41:28.290Z","isFirstParty":false}