{"uid":"cap_kdD-fsnzZFNmGMn55Pa3J","slug":"halowerk-nordic-land-iceland-maximum-surface-slope-de3ec122","name":"HALOWERK Nordic Land – Iceland Maximum Surface Slope","description":"Maximum adjacent-cell surface gradient across the analysis grid. The coordinate is validated against the Natural Earth boundary for Iceland; results outside it are rejected before payment.","url":"https://nordland.halowerk.com/v1/is-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_CnVFxsoQQ13jivGryeuKZ","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 (steepest slope) across the analysis grid for a given coordinate within Iceland.","exampleAgentPrompt":"What's the maximum surface slope at latitude 64.13, longitude -21.90 in Iceland? I need the steepest adjacent-cell gradient for that location.","exampleUseCases":[{"title":"Construction site terrain feasibility check","prompt":"I'm evaluating a site in Iceland at latitude 65.68, longitude -18.10 — can you get the maximum surface slope there so I can assess whether it's too steep to build on?"},{"title":"Renewable energy wind farm siting","prompt":"We're planning a wind farm in Iceland near latitude 63.98, longitude -22.55. What's the maximum terrain slope at that coordinate so we can evaluate equipment access and foundation requirements?"},{"title":"Landslide and erosion risk assessment","prompt":"For a geohazard study, I need the maximum adjacent-cell surface gradient at latitude 64.50, longitude -19.30 in Iceland — can you pull that slope value for me?"}],"resultDescription":"A numeric value representing the maximum adjacent-cell surface gradient (steepest slope) across the analysis grid centered on the requested coordinate. Coordinates outside the Iceland Natural Earth boundary are rejected before any charge is applied.","failureModes":["Coordinate outside Iceland boundary: request rejected before payment with a boundary validation error","Latitude or longitude out of the published European coverage range (lat 34–72.5, lon -31.5–40.5): validation error","Malformed or missing coordinate fields: input schema validation error","Payment failure: x402 payment not completed, request not processed","Server-side data gap for sparse coverage areas: may return null or error for unmapped grid cells"],"whenToPreferThis":"Choose this endpoint when you specifically need the maximum steepness (steepest adjacent-cell gradient) for a location in Iceland, such as for terrain hazard assessments, construction feasibility, erosion modeling, or renewable energy siting. It is Iceland-specific and validates coordinates against the Natural Earth boundary before charging, making it suitable for automated pipelines. Prefer it over general DEM APIs when you need a pre-computed, pay-per-call max slope value without managing raw elevation rasters.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T18:55:55.986Z","isFirstParty":false}