{"uid":"cap_cRyIhMqoqCEePMw0Wql4K","slug":"halowerk-eastern-land-hungary-terrain-ruggedness-index-3f99494d","name":"HALOWERK Eastern Land – Hungary Terrain Ruggedness Index","description":"Standard deviation of sampled surface elevations. The coordinate is validated against the Natural Earth boundary for Hungary; results outside it are rejected before payment.","url":"https://ostland.halowerk.com/v1/hu-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_l_ldu7_6AGe06SdaQb1S7","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 given coordinate within Hungary.","exampleAgentPrompt":"What's the terrain ruggedness index at latitude 47.5 and longitude 19.04 in Hungary? I need the standard deviation of surface elevations for that coordinate.","exampleUseCases":[{"title":"Site suitability for solar farm","prompt":"I'm evaluating a solar farm site in Hungary at latitude 46.9 and longitude 18.3 — can you check how rugged the terrain is there? I need the elevation variability to assess how flat the land is."},{"title":"Flood risk terrain assessment","prompt":"For a flood risk model I'm building, I need to know the terrain ruggedness at latitude 47.8, longitude 21.1 in eastern Hungary. Can you pull the elevation standard deviation for that coordinate?"},{"title":"Agricultural land roughness check","prompt":"I'm looking at farmland near latitude 47.2, longitude 17.6 in Hungary. How rugged is the terrain? I want the surface elevation standard deviation to understand how easy it would be to cultivate."}],"resultDescription":"A numeric terrain ruggedness index value representing the standard deviation of sampled surface elevations at the given coordinate. The coordinate is pre-validated against Hungary's Natural Earth boundary; requests outside Hungary are rejected before any charge is applied.","failureModes":["Coordinate outside Hungary boundary — rejected before payment with a validation error","Latitude or longitude outside the published European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation error","Invalid or missing latitude/longitude fields — request rejected with input error","Network or service timeout — no result returned","Payment failure via x402 protocol — call not executed"],"whenToPreferThis":"Use this endpoint when you need elevation variability or terrain ruggedness specifically for a point location within Hungary, particularly when boundary validation before billing is important. Prefer this over generic DEM or elevation APIs when you want a pre-computed ruggedness index (standard deviation of elevations) rather than raw elevation values, and when the Hungary-specific Natural Earth boundary validation is a useful safeguard.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T07:02:25.607Z","isFirstParty":false}