{"uid":"cap_g7y0kQIxWje2TL_HDd73c","slug":"halowerk-nordic-land-finland-terrain-ruggedness-index-4a7d834a","name":"HALOWERK Nordic Land – Finland Terrain Ruggedness Index","description":"Standard deviation of sampled surface elevations. The coordinate is validated against the Natural Earth boundary for Finland; results outside it are rejected before payment.","url":"https://nordland.halowerk.com/v1/fi-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_mmtrKWPBEPfSrQD7fwyA8","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) for a given coordinate within Finland.","exampleAgentPrompt":"What's the terrain ruggedness at latitude 65.3 and longitude 25.7 in Finland — I need the standard deviation of surface elevations for that spot.","exampleUseCases":[{"title":"Site suitability for wind farm","prompt":"I'm evaluating a potential wind farm site in Finland — can you get the terrain ruggedness index for latitude 66.1, longitude 26.4? I need to know how variable the surface elevations are there."},{"title":"Hiking trail difficulty assessment","prompt":"I'm planning a hiking route and want to know how rugged the terrain is near latitude 68.9, longitude 27.1 in Finland — can you pull the elevation standard deviation for that location?"},{"title":"Infrastructure routing risk analysis","prompt":"We're assessing road construction risk in Finland. Can you check the terrain ruggedness at coordinates latitude 62.5, longitude 29.8 to understand how irregular the surface elevations are?"}],"resultDescription":"A numeric value representing the standard deviation of sampled surface elevations at the queried coordinate — quantifying terrain ruggedness. Higher values indicate more variable, hilly, or rough terrain; lower values indicate flatter land. Coordinates outside Finland's Natural Earth boundary are rejected before any payment is charged.","failureModes":["Coordinate outside Finland's Natural Earth boundary — request rejected before payment","Latitude or longitude outside the published European coverage range (lat 34–72.5, lon -31.5–40.5) — validation error","Missing required latitude or longitude parameters — schema validation failure","Payment failure via x402 protocol — request not processed"],"whenToPreferThis":"Use this endpoint when you need terrain ruggedness specifically for Finnish coordinates, as it enforces Finland boundary validation before charging and provides a focused, cost-efficient single-call computation. Prefer this over generic elevation APIs when you need standard deviation of sampled elevations (not just point elevation) and are working within Finland.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T07:02:43.897Z","isFirstParty":false}