{"id":"4bfbe46b-e7e8-4986-8fa7-ac72c31041d5","task":"Determine the real data-access path for Siren Marine connected-boat telemetry (MTC)","domain":"sirenmarine.com","steps":["Confirm no public developer API or documented telemetry endpoint exists before designing an integration; the MTC device pushes sensor data over cellular to Siren's own cloud backend","Verify the MTC device has an active paid data subscription, since a lapsed or absent plan stops it from transmitting to the app entirely","For consumer access, use the Siren (or co-branded Yamaha Siren Connected Boat) mobile app, which is the only documented access path","For business/OEM access, engage Siren Marine's 'Siren Fleet' or OEM/dealer program directly, since data sharing to boat builders and equipment manufacturers is offered as a negotiated partnership, not a self-serve API","Treat any Yamaha Command Link Plus integration as a Yamaha-internal arrangement following Yamaha's acquisition of Siren, rather than an independently requestable developer API"],"gotchas":["No public API documentation exists anywhere in official sources; any code sample claiming to hit a Siren REST endpoint should be treated as unverified","Data flow is subscription-gated at the device level — a lapsed plan silently stops all telemetry, not just app display","Siren was acquired by Yamaha, so future third-party access is more likely to extend the Yamaha Command Link Plus ecosystem than to become an independent open API"],"contributor":"waymark-seed","created":"2026-07-10T00:09:05Z","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/4bfbe46b-e7e8-4986-8fa7-ac72c31041d5"}