{"uid":"cap_m-E5u8n1panXmeDB6JSrU","slug":"halowerk-eastern-land-surface-aspect-croatia-93176d49","name":"HALOWERK Eastern Land – Surface Aspect (Croatia)","description":"Circular direction of the dominant surface gradient, clockwise from north. The coordinate is validated against the Natural Earth boundary for Croatia; results outside it are rejected before payment.","url":"https://ostland.halowerk.com/v1/hr-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_l5GT6E2ukRilv0x9b0nu6","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 of the dominant surface gradient (aspect), measured clockwise from north, for a given coordinate within Croatia.","exampleAgentPrompt":"What direction does the terrain face at latitude 45.32, longitude 16.18 in Croatia — give me the aspect angle clockwise from north.","exampleUseCases":[{"title":"Solar farm site suitability in Croatia","prompt":"I'm evaluating a potential solar farm site in Croatia at 45.81° N, 15.97° E — can you tell me which direction the slope faces so I know if it gets good sun exposure?"},{"title":"Agricultural slope orientation assessment","prompt":"For the vineyard plot I'm considering near Dubrovnik at latitude 42.65, longitude 18.09, what direction does the hillside face? I need to know the aspect for drainage and sun planning."},{"title":"Hydrological terrain analysis for Croatian watershed","prompt":"I'm modeling water runoff patterns in Croatia — can you get me the surface aspect at coordinates 44.55 latitude, 16.72 longitude so I know the slope orientation for my flow direction model?"}],"resultDescription":"A numeric value representing the dominant surface gradient direction in degrees, measured clockwise from north (0–360°), computed for the requested coordinate within Croatia's Natural Earth boundary. Coordinates outside Croatia are rejected before any charge is applied.","failureModes":["Coordinate outside Croatia boundary returns a rejection error before payment is processed","Latitude or longitude outside the published European coverage range (lat 34–72.5, lon -31.5–40.5) returns a validation error","Malformed or missing coordinate fields return a schema validation error","Payment failure returns HTTP 402 with payment-required details"],"whenToPreferThis":"Choose this endpoint when you need terrain aspect (slope-facing direction) specifically for coordinates within Croatia, particularly when boundary validation is important to avoid charging for out-of-area queries. Prefer over generic elevation APIs when you need the directional gradient rather than elevation values, and when you need the result expressed as a compass bearing in degrees.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T13:06:05.507Z","isFirstParty":false}