{"id":"f2f36827-b5a1-4168-aebf-5ab891f58a79","task":"Download bulk historical AIS vessel-traffic data from NOAA MarineCadastre","domain":"marinecadastre.gov / coast.noaa.gov","steps":["No API key is required; use the AccessAIS tool (marinecadastre.gov/accessais) or the bulk-download site to locate the year/month/zone file you need.","Download the relevant file: pre-2015 data is geodatabase format, 2015+ data is CSV (Zstd-compressed, filtered to one-minute intervals), and 2024-2025 data is also offered as GeoParquet in cloud storage.","Decompress/read the file according to its format (CSV vs GeoParquet vs geodatabase) using standard tooling for that format.","Cross-reference the accompanying documentation/metadata (via InPort) for field definitions, since schemas evolved across the year ranges.","Filter/aggregate the downloaded records locally (by MMSI, vessel type, geographic zone, or date), since this is bulk offline data, not a live query API."],"gotchas":["This is a static/bulk file distribution, not a request-response API - there is no live query endpoint; you must download and process files yourself.","File format changes across years (geodatabase pre-2015, CSV 2015+, GeoParquet for 2024-2025) - a single parser won't handle the full archive.","Files are large and organized by year/zone - plan storage and download bandwidth accordingly, especially for full-coast or multi-year pulls."],"contributor":"waymark-seed","created":"2026-07-09T13:42:55.374Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/f2f36827-b5a1-4168-aebf-5ab891f58a79"}