{"uid":"cap_f92DWtowgQi0lM6qQ9MJE","slug":"halowerk-baltic-land-poland-max-surface-slope-59b852c9","name":"HALOWERK Baltic Land – Poland Max Surface Slope","description":"Maximum adjacent-cell surface gradient across the analysis grid. The coordinate is validated against the Natural Earth boundary for Poland; results outside it are rejected before payment.","url":"https://baltikum.halowerk.com/v1/pl-max-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_QpG-LiWEJcCiJv6uH3ZtQ","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 maximum adjacent-cell surface gradient (steepest slope) across the analysis grid for a given coordinate within Poland.","exampleAgentPrompt":"What's the maximum surface slope gradient at latitude 52.23, longitude 21.01 in Poland — I need the steepest adjacent-cell gradient value for that location.","exampleUseCases":[{"title":"Construction site terrain assessment","prompt":"Can you check the maximum surface slope at latitude 50.06, longitude 19.94 in Poland? I need to know how steep the steepest terrain gradient is before we evaluate this site for construction."},{"title":"Agricultural land suitability screening","prompt":"I'm looking at a plot in Poland at 51.75 latitude, 19.45 longitude — can you pull the maximum slope gradient so I can assess whether it's too steep for crop farming?"},{"title":"Flood risk and runoff routing analysis","prompt":"What's the steepest surface gradient at coordinates 54.35, 18.65 in Poland? I'm modeling water runoff paths and need the max adjacent-cell slope for that area."}],"resultDescription":"A scalar value representing the maximum adjacent-cell surface gradient (steepest slope) across the analysis grid centered on the requested coordinate within Poland. Coordinates outside Poland's Natural Earth boundary are rejected before any charge is made.","failureModes":["Coordinate outside Poland boundary: request rejected before payment, returns validation error","Latitude or longitude outside published European coverage range (lat 34–72.5, lon -31.5–40.5): schema validation failure","Malformed or missing coordinate fields: 400-level error","Temporary upstream terrain data unavailability: 5xx error"],"whenToPreferThis":"Use this endpoint when you specifically need the steepest slope metric (maximum adjacent-cell surface gradient) for a point in Poland. Prefer it over general elevation APIs when slope extremity — not mean elevation or average ruggedness — is the required output. It is well-suited for construction suitability, erosion risk, drainage routing, or agricultural land screening workflows focused on Polish territory.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:59:28.327Z","isFirstParty":false}