{"uid":"cap_GcyJdxwnKpzT2xoAcgL-R","slug":"saylor-innovations-marine-wave-forecast-cadd042f","name":"Saylor Innovations Marine Wave Forecast","description":"Ocean wave height forecast - current wave height, period, direction, swell and sea state with a 5-day forecast for any ocean coordinate","url":"https://saylorinnovations.com/api/marine/waves?utm_source=zero.xyz","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","POST","PUT","PATCH","DELETE","HEAD"],"type":"string"},"queryParams":{"type":"object","required":["lat","lon"],"properties":{"lat":{"type":"string","description":"Latitude in decimal degrees, e.g. 40.71"},"lon":{"type":"string","description":"Longitude in decimal degrees, e.g. -74.01"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string","const":"json"},"example":{"type":"object","required":["wave_height_m","sea_state"],"properties":{"swell":{"type":"object"},"source":{"type":["string","null"],"description":"Data source the values come from"},"forecast":{"type":"array","items":{"type":"object"},"description":"Forecast values"},"location":{"description":"Place the data refers to"},"sea_state":{"type":"string","description":"Sea state"},"checked_at":{"type":["string","null"],"description":"Time the check was run (UTC)"},"observed_at":{"type":["string","null"],"description":"Time of the observation (UTC)"},"wave_height_m":{"type":"number","description":"Wave height, in metres"},"wave_period_s":{"type":["number","null"],"description":"Wave period s"},"wave_direction_deg":{"type":["number","null"],"description":"Wave direction, in degrees"},"wind_wave_height_m":{"type":["number","null"],"description":"Wind wave height m"}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_vAvWpBtUynESXCr1ONeoU","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns current wave height, period, direction, swell, sea state, and a 5-day wave forecast for any ocean coordinate","exampleAgentPrompt":"What are the current wave conditions and 5-day forecast at latitude 21.28, longitude -157.83? I need wave height, period, direction, and sea state.","exampleUseCases":[{"title":"Surfer checking swell forecast","prompt":"Can you pull up the wave height, period, and swell forecast for the next 5 days at 20.89 latitude, -156.68 longitude? I want to know the sea state too."},{"title":"Offshore sailor route planning","prompt":"I'm sailing offshore and need to know the current wave conditions and 5-day wave forecast at 34.01 north, 140.00 east — give me wave height, direction, and sea state."},{"title":"Marine operations safety check","prompt":"What's the current wave height and sea state at coordinates 51.50 latitude, -9.40 longitude, and what does the 5-day wave forecast look like?"}],"resultDescription":"Returns a JSON object with current wave height in metres, wave period in seconds, wave direction in degrees, wind wave height, sea state description, swell breakdown, observed and checked timestamps, data source, location info, and an array of 5-day forecast entries with similar wave metrics","failureModes":["Missing required lat or lon parameters returns an error","Invalid or out-of-range coordinates (e.g. landlocked location) may return no data or an error","Payment failure or insufficient USDC balance results in 402 response","Upstream marine data source unavailable causes null or missing forecast fields","Non-ocean coordinates may return empty or null wave data"],"whenToPreferThis":"Choose this endpoint when you need current wave conditions and a multi-day wave forecast for a specific ocean coordinate, including swell, period, direction, and sea state. Prefer it over generic weather APIs when the use case is specifically marine or nautical — surfing, sailing, offshore operations, or coastal safety assessments requiring granular wave data at precise lat/lon locations.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-16T12:41:14.050Z","isFirstParty":false,"canonicalSlug":"saylor-innovations-marine-wave-forecast-cadd042f"}