Ocean tracking API comparison

Terminal49 vs SeaRates

For LSPs and platforms already running the SeaRates tracking API.

Architecture: SeaRates is polled on demand. Terminal49 registers a tracking request once, then keeps it updated and sends webhook changes.

36 direct ocean carriers as of 14 Aug 2026, 100+ terminals, LFD and 30+ webhook events

CapabilityTerminal49SeaRates
Coverage
  • 36 direct ocean carriers as of 14 Aug 2026; plus 2 account-enabled
  • 100+ direct terminal integrations; all 6 North American Class I railroads
  • Ocean milestones globally; terminal data concentrated in the US and Canada
  • SeaRates lists substantially more ocean carriers
  • Air, parcel and road tracking are also in scope
  • Freight rates and sailing schedules are available
Operational dashboard
  • Holds, fees, LFD and availability on the container object
  • Release readiness uses available_for_pickup plus active holds
  • Terminal holds, fees and last free day are not available
Data out / API
  • JSON:API and 30+ HMAC-signed webhook events
  • DataSync refreshes warehouse, database or spreadsheet tables hourly
  • Tracking widget is an account-enabled add-on for already-tracked shipments
  • Custom JSON; api_key query parameter
  • No webhooks
  • Open-lookup embeddable widget
Free to signup
  • Self-serve Developer Key
  • Track up to 10 containers free
  • Full key is shown once when created
  • Self-serve API key
  • Free-tier limits are not published in the migrate guide
Customer success
  • Customer Success configuration call is documented for DataSync
  • No SLA claim in the source docs
  • Not published in the migrate guide
Reporting
  • DataSync tables can feed Power BI, Tableau and existing reporting tools
  • _transfer_status records the latest table refresh
  • Not published in the migrate guide
AI
  • Hosted MCP server for live shipment data via OAuth
  • Each migrate guide includes a copy-paste coding-agent prompt
  • Not published in the migrate guide
Docs
  • Provider-specific migrate guide and public coverage matrix
  • Deterministic test numbers and webhook test delivery
  • TypeScript SDK for Node.js
  • Not published in the migrate guide

Where we are narrower

  • Carrier count

    Terminal49 has 36 direct ocean carriers plus 2 account-enabled carriers as of 14 August 2026. SeaRates lists substantially more.

  • Geography

    Ocean milestones work globally, but Terminal49 terminal holds, fees, LFD and availability are concentrated in the US and Canada.

  • Modes and commercial data

    Terminal49 does not provide air, parcel or road tracking, freight rates, rate indexes or sailing-schedule search.

Track up to 10 containers free

Create a free Developer Key for up to 10 active containers. The SeaRates migrate guide includes field mappings, a checklist and a copy-paste coding-agent prompt.

Open the SeaRates migrate guideCreate a free Developer Key