{"uid":"cap_4qbZeM-lQ6AV3YVwlBuc0","slug":"halowerk-land-compare-topsoil-ph-multi-site-ranking-484ad1ca","name":"HALOWERK Land Compare – Topsoil pH Multi-Site Ranking","description":"Measures topsoil ph for two to ten named European sites and ranks the observed values with ties preserved.","url":"https://landvergleich.halowerk.com/v1/rank-sites-soil-ph","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"locations":{"type":"array","items":{"type":"object","required":["longitude","latitude"],"properties":{"name":{"type":"string","maxLength":60,"minLength":1},"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."}},"additionalProperties":false},"maxItems":10,"minItems":2}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.008","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":"$0.008/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.008","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_rvuM-sVHw5bKJAh6-4ZC5","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.008","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Measures topsoil pH for 2–10 named European sites specified by WGS84 coordinates and returns a ranked list of sites by pH value with ties preserved.","exampleAgentPrompt":"Can you rank these five farm sites by topsoil pH — site A at 51.5°N, 4.2°E; site B at 48.8°N, 2.3°E; site C at 52.4°N, 13.4°E; site D at 40.4°N, -3.7°E; and site E at 45.4°N, 12.3°E — from most acidic to least?","exampleUseCases":[{"title":"Vineyard site selection by soil pH","prompt":"I'm scouting vineyard locations in France and Spain — can you rank these six coordinates by topsoil pH so I know which soils are most suitable: Bordeaux at 44.8°N, -0.6°E; Burgundy at 47.0°N, 4.8°E; Rioja at 42.5°N, -2.5°E; Priorat at 41.3°N, 0.9°E; Alsace at 48.3°N, 7.4°E; and Douro at 41.1°N, -7.6°E?"},{"title":"Organic farm acquisition due diligence","prompt":"We're considering buying one of four farm parcels in Germany and Poland — please rank them by topsoil pH: parcel Nord at 53.5°N, 10.0°E; parcel Ost at 52.2°N, 21.0°E; parcel Süd at 48.1°N, 11.6°E; and parcel West at 51.5°N, 7.5°E."},{"title":"Reforestation site soil suitability ranking","prompt":"I need to rank eight reforestation candidate sites across Scandinavia and the Baltics by their topsoil pH — here are the coordinates: Oslo 59.9°N 10.7°E, Stockholm 59.3°N 18.1°E, Helsinki 60.2°N 25.0°E, Tallinn 59.4°N 24.7°E, Riga 56.9°N 24.1°E, Vilnius 54.7°N 25.3°E, Copenhagen 55.7°N 12.6°E, and Gothenburg 57.7°N 12.0°E."}],"resultDescription":"Returns a ranked list of the submitted sites ordered by their measured topsoil pH values, with ties preserved, including the pH reading for each named site. Allows direct comparison of soil acidity across up to ten European locations in a single call.","failureModes":["Coordinates outside the European coverage area (lat 34–72.5°N, lon -31.5–40.5°E) will result in an error or missing data","Fewer than 2 or more than 10 locations provided will fail input validation","Missing required latitude or longitude fields for any location will cause a validation error","Unavailable soil data for a specific coordinate may result in null pH values for that site","Payment failure or insufficient USDC balance may block the request"],"whenToPreferThis":"Use this endpoint when you need to compare and rank topsoil pH across multiple (2–10) European locations simultaneously, rather than comparing exactly two sites or fetching a single site's pH. It is the right choice when the goal is a ranked ordering with tie handling, such as for land scouting, agricultural site selection, or environmental assessments across European coordinates.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T12:57:29.773Z","isFirstParty":false}