Kpler

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 6 API contracts indexed on the APIs.io network, including Aggregations API, Authentication API, Facts API, and 3 more. Tagged areas include Vessel Tracking, Maritime, Commodities, Supply Chain, and AIS.

The Kpler catalog on APIs.io includes 1 Spectral governance ruleset.

Kpler’s developer surface includes authentication, documentation, SDKs, and 8 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

29.8/100 thin ▬ flat Agent 20/100 agent aware Front door AI 4/6 moderate saas Full breakdown ↓
scored 2026-11-02 · rubric v0.26.0 · Show this score on your site →

AccessPaid

1 published contract

Vessel Tracking Maritime Commodities Supply Chain AISTrade FlowsShipping Energy

Kin Score

Kin Score How this is scored →
scored 2026-11-02 · rubric v0.26.0

Composite quality — 29.8/100 · thin

Contract Quality 9.4 / 19

Developer Ergonomics 5.7 / 15

Access Clarity 1.2 / 15

Operational Transparency 0.8 / 10

Contract Governance 1.2 / 9

Discoverability 5.0 / 8

Regulatory Posture 1.5 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

9 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 7.9 — up to +18.4 composite points
Contract Quality scores 50.2 — up to +12.5 composite points
Developer Ergonomics scores 38.1 — up to +12.4 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/kpler/apis.yml: open an issue on github.com/api-evangelist/kpler to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Maritime Logistics (ocean shipping, eBL, ports)	builds-on	26.8 (thin)	-	-
Data Marketplaces (data providers on cloud data platforms)	builds-on	26.8 (thin)	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

AIS

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

OpenAPI

measured — observed by APIs.io (published)

APIs 6

Individual APIs this provider publishes, each with its own machine-readable definition.

MarineTraffic API

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...

MarineTraffic Vessels API

GraphQL API for vessel intelligence on 220,000+ vessels - technical particulars, dimensions, and capacity plus six levels of ownership (beneficial owner, registered owner, comme...

Kpler AIS Data Feed

Global vessel-position data feed launched September 2025 (replacing MarineTraffic AIS and the acquired Spire Maritime feeds) combining terrestrial, satellite, and roaming AIS fr...

Kpler Aggregations API

Flows and other aggregated series.

Kpler Authentication API

The Authentication API from Kpler — 1 operation(s) for authentication.

Kpler Facts API

Trades, vessels, and other observed fact data.

Open Collections 3

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Kpler Direct Access Aggregations API

OPEN COLLECTION

Kpler Direct Access Aggregations Authentication API

OPEN COLLECTION

Kpler Direct Access Aggregations Facts API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Kpler Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Kpler Rate Limits

4 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Kpler Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Kpler API Rules

51 rules · 49 errors 1 warnings 1 info

SPECTRAL

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Kpler Authentication

http · 2 schemes

SECURITY

Kpler Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Kpler Agentic Access

4 operations · 1 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 2

SDKs, sample code, and the tooling you integrate with

SDK

SDK

PostmanPublicWorkspace

PostmanPublicWorkspace

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 2

The organization behind the API

Website

Website

LinkedIn

Source (apis.yml)

aid: kpler
url: https://raw.githubusercontent.com/api-evangelist/kpler/refs/heads/main/apis.yml
name: Kpler
kind: company
description: 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.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-02'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/kpler.png
tags:
- Vessel Tracking
- Maritime
- Commodities
- Supply Chain
- AIS
- Trade Flows
- Shipping
- Energy
created: '2026-07-11'
modified: '2026-07-11'
specificationVersion: '0.23'
apis:
- aid: kpler:marinetraffic-api
  name: MarineTraffic API
  tags:
  - Vessel Tracking
  - AIS
  - Maritime
  - Port Calls
  - Voyages
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://servicedocs.marinetraffic.com/
  baseURL: https://services.marinetraffic.com/api
  properties:
  - url: https://servicedocs.marinetraffic.com/
    type: Documentation
  - url: https://www.kpler.com/product/maritime/data-services
    type: ProductPage
  description: MarineTraffic data services API (property of Kpler) for real-time and historical vessel tracking - current
    vessel positions and fleet positions, historical vessel tracks, port calls and berth calls, expected arrivals, voyage
    forecasts and ETAs, port congestion, vessel particulars and photos, vessel search, and reverse geocoding. Authenticated
    with an api_key issued per service and metered with a credit-based system.
- aid: kpler:marinetraffic-vessels-api
  name: MarineTraffic Vessels API
  tags:
  - Vessel Particulars
  - Ownership
  - Maritime
  - Due Diligence
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.kpler.com/product/maritime/vessels-api
  baseURL: https://services.marinetraffic.com/api
  properties:
  - url: https://www.kpler.com/product/maritime/vessels-api
    type: ProductPage
  description: GraphQL API for vessel intelligence on 220,000+ vessels - technical particulars, dimensions, and capacity plus
    six levels of ownership (beneficial owner, registered owner, commercial manager, operator, technical manager, ISM manager)
    and associated companies for maritime due diligence, risk, and compliance. Contact-sales product; reference documentation
    is delivered to customers.
- aid: kpler:kpler-ais-data-feed
  name: Kpler AIS Data Feed
  tags:
  - AIS
  - Vessel Tracking
  - Maritime
  - Streaming
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://www.kpler.com/product/maritime/kplerais
  baseURL: https://api.kpler.com
  properties:
  - url: https://www.kpler.com/product/maritime/kplerais
    type: ProductPage
  - url: https://servicedocs-sm.kpler.com/
    type: Documentation
  description: Global vessel-position data feed launched September 2025 (replacing MarineTraffic AIS and the acquired Spire
    Maritime feeds) combining terrestrial, satellite, and roaming AIS from a 9,000+ station network tracking 350,000+ vessels
    daily at roughly 5-second latency. Delivered via API, NMEA (TCP), Kafka, or custom extracts under an enterprise contract
    - no public WebSocket.
- aid: kpler:kpler-aggregations-api
  name: Kpler Aggregations API
  description: Flows and other aggregated series.
  humanURL: https://liquids.dev.kpler.com/
  baseURL: https://api.kpler.com
  tags:
  - Aggregations
  properties:
  - type: OpenAPI
    url: openapi/kpler-aggregations-api-openapi.yml
  - type: Documentation
    url: https://liquids.dev.kpler.com/
  - type: Portal
    url: https://developers.kpler.com/
  - type: Documentation
    url: https://lng.dev.kpler.com/
  - type: Documentation
    url: https://lpg.dev.kpler.com/
  - type: Documentation
    url: https://coal.dev.kpler.com/
  - type: Documentation
    url: https://freight.dev.kpler.com/
- aid: kpler:kpler-authentication-api
  name: Kpler Authentication API
  description: The Authentication API from Kpler — 1 operation(s) for authentication.
  humanURL: https://liquids.dev.kpler.com/
  baseURL: https://api.kpler.com
  tags:
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/kpler-authentication-api-openapi.yml
  - type: Documentation
    url: https://liquids.dev.kpler.com/
  - type: Portal
    url: https://developers.kpler.com/
  - type: Documentation
    url: https://lng.dev.kpler.com/
  - type: Documentation
    url: https://lpg.dev.kpler.com/
  - type: Documentation
    url: https://coal.dev.kpler.com/
  - type: Documentation
    url: https://freight.dev.kpler.com/
- aid: kpler:kpler-facts-api
  name: Kpler Facts API
  description: Trades, vessels, and other observed fact data.
  humanURL: https://liquids.dev.kpler.com/
  baseURL: https://api.kpler.com
  tags:
  - Facts
  properties:
  - type: OpenAPI
    url: openapi/kpler-facts-api-openapi.yml
  - type: Documentation
    url: https://liquids.dev.kpler.com/
  - type: Portal
    url: https://developers.kpler.com/
  - type: Documentation
    url: https://lng.dev.kpler.com/
  - type: Documentation
    url: https://lpg.dev.kpler.com/
  - type: Documentation
    url: https://coal.dev.kpler.com/
  - type: Documentation
    url: https://freight.dev.kpler.com/
common:
- type: AgenticAccess
  url: agentic-access/kpler-agentic-access.yml
- type: DomainSecurity
  url: security/kpler-domain-security.yml
- type: Authentication
  url: authentication/kpler-authentication.yml
- type: Website
  url: https://www.kpler.com
- type: LinkedIn
  url: https://www.linkedin.com/company/kpler
- type: Documentation
  url: https://developers.kpler.com/
- type: SDK
  url: https://python-sdk.dev.kpler.com/
- type: PostmanPublicWorkspace
  url: https://www.postman.com/kplerdev
- type: Plans
  url: plans/kpler-plans-pricing.yml
- type: RateLimits
  url: rate-limits/kpler-rate-limits.yml
- type: FinOps
  url: finops/kpler-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Kpler API — frequently asked questions

Does Kpler have an API?

Yes. APIs.io lists 6 APIs from Kpler, including MarineTraffic API, MarineTraffic Vessels API and Kpler AIS Data Feed, and 3 more.

Is there an OpenAPI specification for the Kpler API?

Yes. APIs.io indexes 3 OpenAPI specifications for Kpler, each linked for download from this page.

How do I authenticate with the Kpler API?

Kpler uses bearer-token authentication (http · 2 schemes). The details are profiled on APIs.io as Kpler Authentication.

How much does the Kpler API cost?

APIs.io lists 3 pricing plans for Kpler, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the Kpler API ready for AI agents?

Kpler has a Kin Score of 29.8 out of 100 (thin) and an Agent Readiness score of 19.6 (agent-aware), scored by API Evangelist on 2026-11-02.

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