{"uid":"cap_KVx8kTt6QDX4e55gOxJaq","slug":"halowerk-nordic-land-denmark-terrain-ruggedness-elevation-std-dev-9adca2c4","name":"HALOWERK Nordic Land – Denmark Terrain Ruggedness (Elevation Std Dev)","description":"Standard deviation of sampled surface elevations. The coordinate is validated against the Natural Earth boundary for Denmark; results outside it are rejected before payment.","url":"https://nordland.halowerk.com/v1/dk-ruggedness","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_QZRXZme3KuK89ZevdNR4S","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 standard deviation of sampled surface elevations (terrain ruggedness index) for a WGS84 coordinate validated within Denmark's boundary.","exampleAgentPrompt":"What's the terrain ruggedness at latitude 56.1629, longitude 10.2039 in Denmark — give me the elevation standard deviation for that point.","exampleUseCases":[{"title":"Wind farm site suitability screening","prompt":"I'm evaluating a potential wind turbine location in Denmark at 55.4038 latitude and 8.9978 longitude — can you tell me how rugged the terrain is there by giving me the elevation standard deviation?"},{"title":"Off-road route terrain roughness check","prompt":"Before planning an off-road cycling route in Denmark, I need to know how rough the terrain is around 56.4607 latitude and 9.9817 longitude — what's the elevation variability there?"},{"title":"Agricultural land classification by flatness","prompt":"Can you check how flat or rugged the land is at coordinates 55.7167 latitude, 12.5333 longitude in Denmark? I need the surface elevation standard deviation to decide if it's suitable for large-scale mechanized farming."}],"resultDescription":"A numeric value representing the standard deviation of sampled surface elevations at the queried coordinate, indicating terrain ruggedness. Coordinates outside Denmark's Natural Earth boundary are rejected before any charge is applied.","failureModes":["Coordinate outside Denmark's Natural Earth boundary — request rejected, no charge applied","Latitude or longitude outside the published European coverage range (lat 34–72.5, lon -31.5–40.5) — validation error","Missing or malformed latitude/longitude fields — schema validation error","Payment failure via x402 protocol — request not processed"],"whenToPreferThis":"Choose this endpoint when you need a precise, point-level terrain ruggedness metric (elevation standard deviation) for a specific coordinate within Denmark, particularly when boundary validation and pay-per-use pricing ($0.003/call) are acceptable. Prefer it over raster tile downloads or bulk DEM processing when you only need a single-point scalar metric for Danish locations.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T07:02:14.440Z","isFirstParty":false}