{"uid":"cap_DCc7P4Jz9BN4N9JrTINC9","slug":"halowerk-central-land-mean-surface-slope-liechtenstein-bc6a2f80","name":"HALOWERK Central Land – Mean Surface Slope (Liechtenstein)","description":"Mean first-order surface gradient across the analysis grid. The coordinate is validated against the Natural Earth boundary for Liechtenstein; results outside it are rejected before payment.","url":"https://mitteleuropa.halowerk.com/v1/li-mean-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_KksxdpSJMYL6lS-akLc-X","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 mean first-order surface gradient (slope) across an analysis grid cell for a given coordinate within Liechtenstein.","exampleAgentPrompt":"What is the mean surface slope at latitude 47.14, longitude 9.52 in Liechtenstein? I need the terrain gradient for a site assessment.","exampleUseCases":[{"title":"Agricultural land suitability assessment","prompt":"I'm evaluating a plot near Vaduz, Liechtenstein at latitude 47.13, longitude 9.51 — can you tell me the mean surface slope so I can judge whether it's suitable for cultivation?"},{"title":"Construction site terrain analysis","prompt":"We're planning a building project at coordinates 47.16 latitude, 9.55 longitude in Liechtenstein. What's the average slope of the terrain there?"},{"title":"Hiking trail difficulty profiling","prompt":"For a trail planning project in Liechtenstein, can you fetch the mean surface gradient at latitude 47.06, longitude 9.50 so we can estimate the steepness hikers will encounter?"}],"resultDescription":"Returns the mean first-order surface gradient (slope) value computed across the analysis grid for the specified coordinate. Coordinates outside the Liechtenstein Natural Earth boundary are rejected before any charge is applied.","failureModes":["Coordinate outside Liechtenstein boundary: request rejected with a boundary validation error before payment","Latitude or longitude outside European coverage range (lat 34–72.5, lon -31.5–40.5): input validation failure","Missing required latitude or longitude fields: request fails with schema validation error","DEM data unavailable for the requested grid cell: returns an error indicating no data","Payment failure via x402 protocol: call not processed"],"whenToPreferThis":"Use this endpoint when you need a precise, paid-per-call mean terrain slope value specifically for a coordinate within Liechtenstein, sourced from high-resolution European DEM data. Prefer this over generic elevation APIs when first-order gradient (slope) rather than raw elevation is required, and when Liechtenstein boundary enforcement is needed for data quality.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:34:40.430Z","isFirstParty":false}