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 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.

🌐 Visit website 📡 Source on GitHub

38.6/100 thin ▬ flat Agent 20/100 agent aware Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0

AccessPaidSelf serve

6 APIs

Vessel Tracking Maritime Commodities Supply Chain AISTrade FlowsShipping Energy

Kin Score

Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0

Composite quality — 38.6/100 · thin

Contract Quality 11.9 / 21

Developer Ergonomics 4.9 / 17

Access Clarity 6.7 / 17

Operational Transparency 3.5 / 11

Contract Governance 0.0 / 10

Discoverability 6.3 / 9

Regulatory Posture 2.4 / 15

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 Surface 0 / 5

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.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% 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/. 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. Want it done for you? Prioritized profiling — $2,500 →

APIs 6

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

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.

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.
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Paid · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  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

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Kpler

Kin Score

APIs 6

MarineTraffic API

MarineTraffic Vessels API

Kpler AIS Data Feed

Kpler Aggregations API

Kpler Authentication API

Kpler Facts API

Open Collections 4

API Collection

Kpler Direct Access Aggregations API

Kpler Direct Access Aggregations Authentication API

Kpler Direct Access Aggregations Facts API

Pricing Plans 1

Kpler Plans Pricing

Rate Limits 1

Kpler Rate Limits

FinOps 1

Kpler Finops

Security Posture 2

Kpler Authentication

Kpler Domain Security

Agentic Access 1

Kpler Agentic Access

Resources