{"uid":"cap_wkgWuksCLXXAvTKnZMN3I","slug":"halowerk-atlantic-land-belgium-mean-surface-slope-74c0c226","name":"HALOWERK Atlantic Land – Belgium Mean Surface Slope","description":"Mean first-order surface gradient across the analysis grid. The coordinate is validated against the Natural Earth boundary for Belgium; results outside it are rejected before payment.","url":"https://atlantikland.halowerk.com/v1/be-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_2es9xDuBMr_C3HqIks-os","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 within Belgium","exampleAgentPrompt":"What's the mean terrain slope at latitude 50.85 and longitude 4.35 in Belgium? I need the first-order surface gradient for that location.","exampleUseCases":[{"title":"Construction site slope assessment","prompt":"Can you check the mean surface gradient at latitude 51.05, longitude 3.72 in Belgium? I need to know how steep the terrain is before planning earthworks for a construction project."},{"title":"Agricultural land suitability analysis","prompt":"I'm evaluating a farming parcel near latitude 50.46, longitude 4.86 in Belgium — what is the average slope of the land there? I need it to assess erosion risk and irrigation feasibility."},{"title":"Real estate terrain evaluation","prompt":"For a property I'm considering at latitude 50.63, longitude 5.57 in Belgium, can you pull the mean first-order surface gradient so I can understand how flat or hilly the terrain is?"}],"resultDescription":"Returns the mean first-order surface gradient (slope) value across the analysis grid centered on the provided coordinate. The result reflects terrain steepness derived from a digital elevation model. Coordinates outside Belgium's Natural Earth boundary are rejected before any charge is applied.","failureModes":["Coordinate outside Belgium's Natural Earth boundary — rejected before payment with a validation error","Latitude or longitude outside the European coverage range (lat 34–72.5, lon -31.5–40.5) — schema validation failure","Malformed or missing latitude/longitude fields — request rejected with input schema error","Network timeout or service unavailability — HTTP 5xx error returned"],"whenToPreferThis":"Choose this endpoint when you need a precise, pre-validated mean surface gradient specifically for a coordinate within Belgium. It is ideal for geospatial analysis pipelines requiring per-point terrain steepness data without building your own DEM processing stack. Prefer it over general elevation APIs when you need slope (gradient) rather than raw elevation, and when your use case is strictly Belgium-scoped (the built-in boundary validation saves you from billing errors on out-of-bounds queries).","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T13:14:59.976Z","isFirstParty":false}