{"uid":"cap_xMAkClj9GRyNdaRbcCjAh","slug":"greeneris-sea-state-marine-weather-forecast-7649e3ca","name":"Greeneris Sea State & Marine Weather Forecast","description":"Hourly sea-state forecast from Open-Meteo Marine wave models: wave height/direction/period, wind waves and swell, up to 7 days, UTC. Query: ?port=marseille|ajaccio|nice|... (12 Mediterranean presets) or ?latitude=43.3&longitude=5.4, plus ?days=1-7 (default 2). Includes a summary block (max wave height next 24h / full horizon). 1h cache. For sailing go/no-go, port ops and routing.","url":"https://data.greeneris.io/v1/sea/state","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","properties":{"days":{"type":"integer","default":2,"description":"Forecast days 1-7"},"port":{"type":"string","description":"Preset Mediterranean port name (e.g. marseille, ajaccio, genoa)"},"latitude":{"type":"number","description":"Marine point latitude (if no port given)"},"longitude":{"type":"number","description":"Marine point longitude (if no port given)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"source":"Open-Meteo Marine (wave models ECMWF/MeteoFrance/DWD, CC-BY 4.0)","summary":{"first_hours_wave_m":[0.38,0.4,0.44,0.5,0.54,0.58],"max_wave_height_m_24h":0.62,"max_wave_height_m_all":0.88},"location":{"port":"marseille","latitude":43.25,"longitude":5.375},"hourly_units":{"wave_height":"m","wave_period":"s","wave_direction":"°"},"forecast_days":2}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_crm1vFQUzX8WhqiFGhQkK","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns Mediterranean marine weather forecasts including wave height, period, and direction for named ports or custom lat/lon coordinates, covering up to 7 days ahead.","exampleAgentPrompt":"What will the sea conditions be like at Marseille over the next 3 days — specifically wave height and direction?","exampleUseCases":null,"resultDescription":"Returns a JSON object with source attribution, a summary of first-hours wave heights, max wave height over 24h and the full forecast window, the resolved location (port name or lat/lon), hourly units, and the number of forecast days. Hourly breakdowns include wave height in metres, wave period in seconds, and wave direction in degrees.","failureModes":["Invalid or out-of-range latitude/longitude returns an error","Unsupported port name returns an error or empty result","Forecast days value outside 1-7 range may be rejected or clamped","HTTP 402 returned if payment not attached — endpoint requires x402 USDC payment before data is served","Network timeout if upstream Open-Meteo service is unavailable"],"whenToPreferThis":"Choose this endpoint when you need structured, machine-readable Mediterranean marine weather forecasts for named ports (Marseille, Ajaccio, Genoa, etc.) or arbitrary lat/lon coordinates, with wave height summaries and hourly breakdowns. Prefer this over generic weather APIs when nautical or marine-specific variables (wave period, wave direction) are required. Pay-per-call at $0.005 USDC with no account setup needed.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:44:49.091Z","isFirstParty":false}