{"uid":"cap_UMII77c5KIwHfY169_1eN","slug":"noaa-co-ops-water-level-day-station-9414290-via-x402-5ed7398e","name":"NOAA CO-OPS Water Level Day — Station 9414290 via x402","description":"Machine-payable x402 offers and books: software pays per request in USDC on Base over HTTP 402, with no account or API key.","url":"https://market.561.group/v1/marine/coops-water-level/9414290/20250101?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"date":"20261012","kind":"noaa-coops-water-level-day/v1","unit":"metre","datum":"MLLW","source":{"url":"https://api.tidesandcurrents.noaa.gov/api/prod/datagetter?begin_date=20261012&end_date=20261012&station=9414290&product=water_level&datum=MLLW&time_zone=gmt&units=metric&format=json&application=561Group","text":"{\"metadata\":{\"id\":\"9414290\",\"name\":\"Synthetic demonstration station\"},\"data\":[{\"t\":\"2026-10-12 00:00\",\"v\":\"1.234\",\"s\":\"0.010\",\"f\":\"0,0,0,0\",\"q\":\"p\"},{\"t\":\"2026-10-12 00:06\",\"v\":\"1.250\",\"s\":\"0.012\",\"f\":\"0,0,0,0\",\"q\":\"v\"}]}","bytes":221,"rights":{"api":"https://api.tidesandcurrents.noaa.gov/api/prod/","notice":"561 Group derived representation; original public NOAA data not claimed as proprietary, and no NOAA endorsement is asserted.","authority":"https://oceanservice.noaa.gov/disclaimer.html"},"identity":"ni:///sha-256;iGkPZ20m87tV_8qgaJm5mbeApMCJQEEOc9FQ8YWgmmg","receivedAt":"2026-10-13T00:00:00.000Z","attribution":"NOAA National Ocean Service, Center for Operational Oceanographic Products and Services","sourceMetadata":{"id":"9414290","name":"Synthetic demonstration station"}},"product":"water_level","station":"9414290","timeZone":"GMT","observations":[{"flags":"0,0,0,0","sigma":"0.010","quality":"p","observedAt":"2026-10-12T00:00:00.000Z","heightMeters":1.234,"originalValue":"1.234"},{"flags":"0,0,0,0","sigma":"0.012","quality":"v","observedAt":"2026-10-12T00:06:00.000Z","heightMeters":1.25,"originalValue":"1.250"}],"measurementState":"source-reported-possibly-preliminary"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.03","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":"$0.03/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.03","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_SQG5vIjuBLunOdncZd--k","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.03","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a full day of tide/water-level observations (6-minute intervals) for NOAA CO-OPS station 9414290 (San Francisco), paid per request in USDC over HTTP 402 with no account required.","exampleAgentPrompt":"Pull the full day of NOAA water level readings for San Francisco (station 9414290) on January 1, 2025 — I need the 6-minute interval heights in metres relative to MLLW.","exampleUseCases":[{"title":"Historical tide analysis for Bay Area","prompt":"Get me all the water level observations for NOAA station 9414290 in San Francisco for March 15, 2024 — I need every 6-minute reading in metres so I can compare against flood event records."},{"title":"Autonomous marine routing agent","prompt":"My autonomous boat-routing agent needs the tidal water levels at San Francisco (station 9414290) for today, January 1, 2025, in metric units relative to MLLW — no API key, just pay per request."},{"title":"Coastal infrastructure monitoring pipeline","prompt":"For our automated coastal monitoring pipeline, fetch the NOAA CO-OPS water level data for station 9414290 covering the full day of December 31, 2024, so we can check whether water heights exceeded our 1.5-metre alert threshold at any point."}],"resultDescription":"A JSON object containing: station ID and name, date, datum (MLLW), time zone (GMT), unit (metre), an array of observations each with timestamp, heightMeters, sigma, quality flag, and original raw value, plus source URL, attribution text, cryptographic identity hash (ni:// SHA-256), raw NOAA API response text, byte count, rights notice, and measurement state (e.g. preliminary).","failureModes":["Invalid or unsupported station ID returns error or empty data","Future dates may return no observations or synthetic/demonstration data only","Malformed date in URL path (not YYYYMMDD) causes 4xx error","Payment failure over x402 protocol blocks request","NOAA upstream API unavailability causes proxy failure","Requesting very old dates may fall outside NOAA data retention"],"whenToPreferThis":"Choose this endpoint when you need machine-payable, account-free access to NOAA CO-OPS water level data for San Francisco (station 9414290) and want to pay per-request in USDC on Base without API key management. Prefer it in autonomous agent or software pipelines that need cryptographically identified, attributed tidal data with provenance metadata included in the response. If you need data for a different NOAA station, look for sibling endpoints on the same market.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:34:27.876Z","isFirstParty":false,"canonicalSlug":"noaa-co-ops-water-level-day-station-9414290-via-x402-5ed7398e"}