{"uid":"cap_Y_Ji28dDu-359Nn6VYoSe","slug":"halowerk-europe-land-mean-slope-buffer-250m-254f1b2a","name":"HALOWERK Europe Land – Mean Slope Buffer 250m","description":"Mean first-order surface gradient across the analysis grid. The service evaluates a circular 250 metre neighborhood around one coordinate and returns standardized units across all 30 covered countries.","url":"https://euroland.halowerk.com/v1/europe-mean-slope-buffer-250m","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":"0.006","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":"$0.006/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.006","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.006","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_94bRRMmhyCEmoBVHL6jAJ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.006","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) computed over a 250-metre circular neighborhood around a given European coordinate.","exampleAgentPrompt":"What's the mean slope across a 250-metre radius around latitude 48.8566, longitude 2.3522 in Europe? I need the average terrain steepness in standardized units.","exampleUseCases":[{"title":"Solar farm site suitability screening","prompt":"Can you check the average slope within 250 metres of latitude 41.3874, longitude 2.1686 in Spain? I need to know if the terrain is flat enough to be viable for a solar installation."},{"title":"Agricultural land gradient assessment","prompt":"I'm evaluating a farm plot near latitude 52.2297, longitude 21.0122 in Poland — what's the mean surface gradient in a 250-metre buffer around that point? I need it to estimate erosion risk."},{"title":"Construction feasibility terrain check","prompt":"What is the mean slope around latitude 47.3769, longitude 8.5417 in Switzerland within a 250-metre radius? I'm doing a preliminary feasibility check for a building project and need the terrain steepness."}],"resultDescription":"A numeric mean slope value representing the average first-order surface gradient across the 250-metre circular buffer around the supplied coordinate, returned in standardized units consistent across all 30 covered European countries.","failureModes":["Coordinates outside European coverage bounds (lat 34–72.5, lon -31.5–40.5) will result in an error or empty response","Invalid or non-numeric latitude/longitude values will cause a validation error","Locations over open water with no terrain data may return null or zero","Service may return an error if the x402 payment is not completed or USDC balance is insufficient"],"whenToPreferThis":"Use this endpoint when you need a quick, standardized slope metric for a single point location anywhere across Europe (30 countries) and a 250-metre analysis radius is appropriate for your use case. It is ideal for site-level assessments such as solar suitability, agricultural erosion, construction feasibility, or ecological corridor planning where terrain steepness at a neighbourhood scale matters. Prefer the 60-metre buffer sibling endpoint for finer, more local slope estimates.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T13:13:57.919Z","isFirstParty":false}