{"uid":"cap_lSNS7OcwuNugm_Q63C_FH","slug":"halowerk-nordic-land-finland-mean-surface-slope-81dc17b5","name":"HALOWERK Nordic Land – Finland Mean Surface Slope","description":"Mean first-order surface gradient across the analysis grid. 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-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_4TTty946KJOX322rvNniP","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 for a coordinate point validated to fall within Finland's boundaries.","exampleAgentPrompt":"What's the mean surface slope at latitude 61.5 and longitude 25.7 in Finland? I need the first-order gradient for that location.","exampleUseCases":[{"title":"Construction site terrain assessment","prompt":"Can you get me the average surface slope at latitude 60.45, longitude 22.3 in Finland? We're evaluating a potential construction site and need to know how steep the terrain is."},{"title":"Agricultural land suitability check","prompt":"What's the mean slope gradient at coordinates 63.1 latitude, 27.4 longitude in Finland? I'm assessing whether this farmland parcel is suitable for machinery."},{"title":"Renewable energy site screening","prompt":"I need the terrain slope value for a potential wind farm site in Finland at latitude 65.8 and longitude 25.0 — can you pull the mean surface gradient for that point?"}],"resultDescription":"A numeric value representing the mean first-order surface slope (gradient) across the analysis grid centered on the provided coordinate. The coordinate is pre-validated against Finland's Natural Earth boundary; requests outside Finland are rejected before any charge is incurred.","failureModes":["Coordinate outside Finland's Natural Earth boundary — request rejected, no charge applied","Coordinate within European coverage bounds but outside Finland — boundary validation failure","Latitude or longitude outside published European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation error","Payment failure via x402 protocol — call not executed","No terrain data available for the specific grid cell — null or error response"],"whenToPreferThis":"Choose this endpoint when you need a single numeric mean slope value for a specific point in Finland, derived from a surface elevation grid. It is ideal for geospatial analysis workflows, land assessment tools, or environmental screening pipelines that require per-point topographic steepness values specifically within Finland. Prefer it over generic elevation APIs when you need a gradient/slope metric rather than raw elevation, and when Finland-specific boundary validation is required to ensure data quality.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T07:02:43.896Z","isFirstParty":false}