{"uid":"cap_q8W-46o5K5wfZ4yhr_4gJ","slug":"halowerk-southern-land-greece-mean-slope-30b84149","name":"HALOWERK Southern Land – Greece Mean Slope","description":"Mean first-order surface gradient across the analysis grid. The coordinate is validated against the Natural Earth boundary for Greece; results outside it are rejected before payment.","url":"https://suedland.halowerk.com/v1/gr-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_fbAhle6QFt2sS97QmaEaK","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 given coordinate in Greece, validated against the Natural Earth boundary.","exampleAgentPrompt":"What's the mean slope of the terrain at latitude 37.9, longitude 23.7 in Greece? I need it for a land suitability assessment.","exampleUseCases":[{"title":"Agricultural land suitability in Greece","prompt":"I'm evaluating a plot near Thessaloniki at latitude 40.6, longitude 22.9 — can you get the mean surface slope there so I can assess if it's suitable for mechanized farming?"},{"title":"Solar farm site screening","prompt":"We're looking at a site in the Peloponnese at latitude 37.5, longitude 22.1 for a solar installation — what's the average terrain gradient there?"},{"title":"Construction risk assessment","prompt":"For a building project at coordinates 38.2 latitude, 21.7 longitude in Greece, what is the mean slope of the land? We need it for our slope stability report."}],"resultDescription":"A numeric value representing the mean first-order surface gradient (slope) across the analysis grid at the specified coordinate. Coordinates outside the Natural Earth boundary for Greece are rejected before processing.","failureModes":["Coordinate outside Greece boundary — rejected before payment, no charge incurred","Latitude or longitude out of the published European coverage range (lat 34–72.5, lon -31.5–40.5) — validation error","Malformed or missing coordinate fields — schema validation error","Payment failure via x402 — request not processed"],"whenToPreferThis":"Choose this endpoint when you need mean terrain slope specifically for a point location within Greece, especially for land suitability, agriculture, construction, or environmental assessments. It is distinct from maximum slope (which uses adjacent-cell max gradient) and provides a smoothed average gradient rather than a peak value.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T13:16:01.021Z","isFirstParty":false}