Spire Maritime

Spire Maritime (Spire Global) delivers satellite and terrestrial AIS vessel data - global ship positions, static vessel characteristics, voyage and destination data, port events, and predicted ETAs. The flagship Maritime 2.0 service is GraphQL-first at a single endpoint (https://api.spire.com/graphql, Bearer token auth), with a separate raw-TCP AIS stream for real-time message delivery in NMEA 0183 format. Access is enterprise / contact-sales. NOTE - following Spire Maritime's acquisition by Kpler, these APIs are being migrated/discontinued; new integrations are directed to developers.kpler.com.

Spire Maritime publishes 5 APIs on the APIs.io network, including Vessels API, and 4 more. Tagged areas include Vessel Tracking, AIS, Maritime, Satellite AIS, and Ship Tracking.

Spire Maritime’s developer surface includes authentication, documentation, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub

22.6/100 emerging ▬ flat Agent 5/100 human only saas Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

AccessEnterpriseSelf serve

5 APIs

Vessel Tracking AIS MaritimeSatellite AISShip Tracking Real-Time Data Maritime DataPredicted ETAPort EventsLocation GraphQL

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 22.6/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 5.6 / 17

Access Clarity 4.6 / 17

Operational Transparency 3.4 / 11

Contract Governance 0.0 / 10

Discoverability 6.1 / 9

Regulatory Posture 1.8 / 15

Agent readiness — 5/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 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

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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/. 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/spire-maritime: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 5

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

Spire Maritime Vessels API

GraphQL `vessels` query returning up to 1,000 vessels per page - static data (name, MMSI, IMO, callsign, flag, shipType, dimensions), last position update (lat/long, course, hea...

Spire Maritime Messages API

GraphQL query surface for decoded AIS messages (position and static/voyage reports) filtered by MMSI and time window, returned in large paginated batches. Used to pull recent an...

Spire Maritime Port Events API

GraphQL port-event queries - `portEventsByVessel`, `portEventsByLocation`, and `portEventsByShipType` - surfacing vessel arrivals and departures (ATA/ATD), port calls, and berth...

Spire Maritime Predicted ETA / Routing API

Predicted vessel routing and ETA - a `predictedVesselRoute` query taking an origin, destination, and vessel and returning the predicted sea route, distance, and estimated time o...

Spire Maritime AIS TCP Stream

Always-on real-time AIS feed delivered over a RAW TCP SOCKET (not HTTP, not WebSocket). Client opens a TCP connection to streamingv2.ais.spire.com port 56784, authenticates with...

Open Collections 1

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

Spire Maritime 2.0 (GraphQL)

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Spire Maritime Plans Pricing

1 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Spire Maritime Rate Limits

4 limits

RATE LIMITS

FinOps 1

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

Spire Maritime Finops

FINOPS

Security Posture 2

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

Spire Maritime Authentication

http/token · 2 schemes

SECURITY

Spire Maritime Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

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

LinkedIn

Website

Website

Source (apis.yml)

aid: spire-maritime
url: https://raw.githubusercontent.com/api-evangelist/spire-maritime/refs/heads/main/apis.yml
name: Spire Maritime
kind: company
description: Spire Maritime (Spire Global) delivers satellite and terrestrial AIS vessel data - global ship positions, static
  vessel characteristics, voyage and destination data, port events, and predicted ETAs. The flagship Maritime 2.0 service
  is GraphQL-first at a single endpoint (https://api.spire.com/graphql, Bearer token auth), with a separate raw-TCP AIS stream
  for real-time message delivery in NMEA 0183 format. Access is enterprise / contact-sales. NOTE - following Spire Maritime's
  acquisition by Kpler, these APIs are being migrated/discontinued; new integrations are directed to developers.kpler.com.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: enterprise
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Enterprise · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  - url: https://spire.com/maritime/
    status: 301
    note: declared website redirects to https://www.kpler.com/product/maritime/kplerais — a different registrable domain (spire.com
      -> kpler.com), possible rename or acquisition (probed 2026-09-03, roadmap#169)
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/spire-maritime.png
tags:
- Vessel Tracking
- AIS
- Maritime
- Satellite AIS
- Ship Tracking
- Real-Time Data
- Maritime Data
- Predicted ETA
- Port Events
- Location
- GraphQL
created: '2026-07-12'
modified: '2026-07-12'
specificationVersion: '0.23'
apis:
- aid: spire-maritime:spire-maritime-vessels-api
  name: Spire Maritime Vessels API
  tags:
  - Vessels
  - AIS
  - Ship Tracking
  - GraphQL
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://documentation.spire.com/maritime-2-0/
  baseURL: https://api.spire.com/graphql
  properties:
  - url: https://documentation.spire.com/maritime-2-0/
    type: Documentation
  - url: https://documentation.spire.com/maritime-2-0/#graphql
    type: APIReference
  - url: graphql/spire-maritime.graphql
    type: GraphQL
  - url: collections/spire-maritime.postman_collection.json
    type: PostmanCollection
  - url: collections/spire-maritime.opencollection.json
    type: OpenCollection
  description: GraphQL `vessels` query returning up to 1,000 vessels per page - static data (name, MMSI, IMO, callsign, flag,
    shipType, dimensions), last position update (lat/long, course, heading, speed, collectionType SATELLITE or TERRESTRIAL),
    current voyage (destination, draught, ETA, matched port), and extended vessel characteristics. Filter by MMSI/IMO/callsign/flag/shipType,
    area of interest (GeoJSON/WKT polygon), or last-position time range; cursor pagination via first/after.
- aid: spire-maritime:spire-maritime-messages-api
  name: Spire Maritime Messages API
  tags:
  - Message
  - AIS
  - Historical AIS
  - GraphQL
  tags_raw:
  - Messages
  - AIS
  - Historical AIS
  - GraphQL
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://documentation.spire.com/maritime-2-0/
  baseURL: https://api.spire.com/graphql
  properties:
  - url: https://documentation.spire.com/maritime-2-0/
    type: Documentation
  - url: graphql/spire-maritime.graphql
    type: GraphQL
  description: GraphQL query surface for decoded AIS messages (position and static/voyage reports) filtered by MMSI and time
    window, returned in large paginated batches. Used to pull recent and historical AIS message history over HTTPS rather
    than the always-on TCP stream. Message-level field selection here is representative and grounded in Spire's documented
    message model.
- aid: spire-maritime:spire-maritime-port-events-api
  name: Spire Maritime Port Events API
  tags:
  - Port Events
  - Port Calls
  - Maritime
  - GraphQL
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://documentation.spire.com/maritime-2-0/#port-events
  baseURL: https://api.spire.com/graphql
  properties:
  - url: https://documentation.spire.com/maritime-2-0/#port-events
    type: Documentation
  - url: graphql/spire-maritime.graphql
    type: GraphQL
  description: GraphQL port-event queries - `portEventsByVessel`, `portEventsByLocation`, and `portEventsByShipType` - surfacing
    vessel arrivals and departures (ATA/ATD), port calls, and berth/anchorage events with state filtering. Backed by an improved
    event algorithm for more accurate arrival/departure recognition.
- aid: spire-maritime:spire-maritime-predicted-eta-api
  name: Spire Maritime Predicted ETA / Routing API
  tags:
  - Predicted ETA
  - Routing
  - Voyage
  - GraphQL
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://documentation.spire.com/routing-api/
  baseURL: https://api.spire.com/graphql
  properties:
  - url: https://documentation.spire.com/routing-api/
    type: Documentation
  - url: graphql/spire-maritime.graphql
    type: GraphQL
  description: Predicted vessel routing and ETA - a `predictedVesselRoute` query taking an origin, destination, and vessel
    and returning the predicted sea route, distance, and estimated time of arrival / voyage duration. Complements the self-reported
    AIS ETA in currentVoyage with a computed, ocean-network ETA.
- aid: spire-maritime:spire-maritime-ais-tcp-stream
  name: Spire Maritime AIS TCP Stream
  tags:
  - Real-Time Data
  - Streaming
  - AIS
  - NMEA 0183
  - TCP
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://documentation.spire.com/tcp-stream-v2/using-the-tcp-stream/
  baseURL: streamingv2.ais.spire.com:56784
  properties:
  - url: https://documentation.spire.com/tcp-stream-v2/using-the-tcp-stream/
    type: Documentation
  description: Always-on real-time AIS feed delivered over a RAW TCP SOCKET (not HTTP, not WebSocket). Client opens a TCP
    connection to streamingv2.ais.spire.com port 56784, authenticates with a token, and receives encoded AIS sentences in
    NMEA 0183 v4.0 with a timestamp TAG-block prefix, one sentence per line. A server-side cursor resumes the stream after
    brief disconnects. This is a plain TCP transport - there is NO documented WebSocket (wss://) endpoint.
common:
- type: DomainSecurity
  url: security/spire-maritime-domain-security.yml
- type: Authentication
  url: authentication/spire-maritime-authentication.yml
- type: GitHubOrganization
  url: https://github.com/spireglobal
- type: LinkedIn
  url: https://www.linkedin.com/company/spire-global
- type: Website
  url: https://spire.com/maritime/
- type: Documentation
  url: https://documentation.spire.com/
- type: Plans
  url: plans/spire-maritime-plans-pricing.yml
- type: RateLimits
  url: rate-limits/spire-maritime-rate-limits.yml
- type: FinOps
  url: finops/spire-maritime-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-parent: spire-global
x-relationship: product

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