Kpler is a commodities intelligence and maritime data platform that tracks cargoes, vessels, and trade flows across oil, refined products, LNG, LPG, and dry bulk markets. Kpler owns MarineTraffic and FleetMon (acquired 2023) and acquired Spire's maritime AIS business (2025), giving it one of the largest terrestrial and satellite AIS vessel tracking networks in the world. Its Direct Access REST APIs deliver trades, flows, vessels, port calls, freight metrics, and inventories per commodity platform, while MarineTraffic APIs deliver live vessel positions, port calls, voyages, and vessel particulars. API access is customer-gated behind an enterprise subscription, but the documentation, Python SDK, and endpoint surface are publicly published.
Kpler publishes 3 APIs on the APIs.io network: Aggregations API, Authentication API, and Facts API. Tagged areas include Vessel Tracking, Maritime, Commodities, Supply Chain, and AIS.
Kpler’s developer surface includes authentication, documentation, SDKs, and 8 more developer resources.
Regulatory Posture applies to this provider. Its tags matched the
Energy & Utilities regime, so
Regulatory Posture carries 15 points of the composite.
If this regime is wrong for your business, say so on your
provider repo — the
applicability map is public and we will correct it.
Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it
carries 10 points of the composite. It is scored from the published contracts
themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already
holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in
front of it, and the first time that check is skipped a duplicate record is created.
Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet,
not penalised by it.
The six quality facets above are damped to 75 points between them,
because the conditional facet above carries the other
25. That is why each facet's contribution is shown against a damped
maximum: raising a quality facet moves the composite by 75% of its nominal
weight, not 100%. The full arithmetic is at apis.io/rating/.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/kpler: open an issue to ask a question, or submit a pull request to add artifacts.
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MarineTraffic data services API (property of Kpler) for real-time and historical vessel tracking - current vessel positions and fleet positions, historical vessel tracks, port c...
GraphQL API for vessel intelligence on 220,000+ vessels - technical particulars, dimensions, and capacity plus six levels of ownership (beneficial owner, registered owner, comme...
Global vessel-position data feed launched September 2025 (replacing MarineTraffic AIS and the acquired Spire Maritime feeds) combining terrestrial, satellite, and roaming AIS fr...
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Kin Score
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