OpenSky Network

Open-source flight tracking network with a REST API for accessing real-time and historical ADS-B aircraft state vectors, flight tracks, and airport arrivals and departures. The network is powered by a community of volunteer ADS-B receiver operators and is intended for non-commercial research and educational use.

OpenSky Network publishes 3 APIs on the APIs.io network: Flights API, State Vectors API, and Tracks API. Tagged areas include Aviation, Flight Tracking, ADS-B, Aircraft, and Airport.

The OpenSky Network catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

OpenSky Network’s developer surface includes authentication, GitHub presence, documentation, status page, and 14 more developer resources.

🌐 Visit website 📡 Source on GitHub

40.6/100 developing ▬ flat Agent 33/100 agent ready open core · GPL-3.0 Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemiumSelf serve⚡ Free to try

1 APIs

Aviation Flight Tracking ADS-B AircraftAirportReal-Time Historical Data

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 40.6/100 · developing

Contract Quality 14.2 / 23

Developer Ergonomics 4.7 / 18

Access Clarity 10.2 / 18

Operational Transparency 4.3 / 12

Contract Governance 1.1 / 11

Discoverability 6.2 / 9

Open Source Surface 0.0 / 10

Agent readiness — 33/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 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 4 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Open Source Surface applies to this provider. This product is open source and we read its repository directly, so Open Source Surface carries 10 points of the composite. It is scored from what the repository actually publishes — a security policy, a contribution guide, a release history, a code of conduct — read live from the provider rather than inferred from our own catalog pointers. This facet adds; nothing was taken away to make room for it. An open-source project is not excused from the commercial facets, because exemption would strip it of the points it does earn. If we have the wrong repository, or this product is not open source, say so on your provider repo and we will drop the facet rather than have you publish against it.

Create-or-Update Ergonomics does not apply to this provider. The published contracts declare no write operations, and a read-only API cannot create-or-update. The facet is excluded from this provider's denominator entirely — not scored zero. A reference or data API is not deficient for being unable to upsert.

The six quality facets above are damped to 90 points between them, because the conditional facet above carries the other 10. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 90% 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/opensky: 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 4

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

OpenSky Network Trino Historical Data API

SQL query interface powered by Trino for accessing the full OpenSky historical dataset including state vectors, raw Mode S messages, ADS-C and MLAT data, and flight records. Ava...

OpenSky Network Flights API

Endpoints for retrieving flight records including arrivals, departures, and flights by aircraft.

OpenSky Network State Vectors API

Endpoints for retrieving real-time and historical aircraft state vectors (position, velocity, altitude, etc.).

OpenSky Network Tracks API

Endpoints for retrieving aircraft trajectory tracks with detailed waypoint data.

Open Collections 4

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

API Collection

OPEN COLLECTION

OpenSky Network REST Flights API

OPEN COLLECTION

OpenSky Network REST Flights State Vectors API

OPEN COLLECTION

OpenSky Network REST Flights Tracks API

OPEN COLLECTION

Pricing Plans 2

Published pricing tiers and plan structures.

Opensky Rest Api

4 plans

PLANS

Opensky Trino Api

2 plans

PLANS

Rate Limits 2

Documented rate limits and quota policies.

Opensky Rest Api

4 limits

RATE LIMITS

Opensky Trino Api

3 limits

RATE LIMITS

FinOps 1

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

Opensky

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Opensky Context

4 classes · 33 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

OpenSky Network API Rules

5 rules · 3 warnings 2 info

SPECTRAL

JSON Schema 3

Standalone JSON Schema definitions for this provider's data models.

FlightObject

12 properties

JSON SCHEMA

StateVectorResponse

2 properties

JSON SCHEMA

TrackResponse

5 properties

JSON SCHEMA

Examples 2

Example request and response payloads for these APIs.

States All Response

2 fields

EXAMPLE

Track Response

5 fields

EXAMPLE

Security Posture 2

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

Opensky Authentication

http · 1 scheme

SECURITY

Opensky Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Opensky Agentic Access

7 operations

7 operations · 0 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Login

Register

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

GitHub

GitHub

GitHubRepository

GitHubRepository

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 4

Status, limits, changes, and where to get help

IssueTracker

Status

Contact

Forums

Commercial 3

Pricing, plans, and the legal terms of use

License

License

TermsOfService

TermsOfService

FinOps

FinOps

Company 2

The organization behind the API

Website

Website

Twitter

Twitter

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

name: OpenSky Network
description: Open-source flight tracking network with a REST API for accessing real-time and historical ADS-B aircraft state
  vectors, flight tracks, and airport arrivals and departures. The network is powered by a community of volunteer ADS-B receiver
  operators and is intended for non-commercial research and educational use.
deliveryModel:
  model: open-core
  license: GPL-3.0
  open_source: true
  commercial: true
  callable_host: true
  label: Open core · an OSS project plus a commercial hosted product
  confidence: high
  source:
  - license
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/opensky.png
url: https://raw.githubusercontent.com/api-evangelist/opensky/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.23'
tags:
- Aviation
- Flight Tracking
- ADS-B
- Aircraft
- Airport
- Real-Time
- Historical Data
apis:
- name: OpenSky Network Trino Historical Data API
  description: SQL query interface powered by Trino for accessing the full OpenSky historical dataset including state vectors,
    raw Mode S messages, ADS-C and MLAT data, and flight records. Available to university-affiliated researchers, governmental
    organisations, and aviation authorities.
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://openskynetwork.github.io/opensky-api/trino.html
  baseURL: https://trino.opensky-network.org
  tags:
  - Historical Data
  - State Vectors
  - Modes
  - ADS-C
  - MLAT
  - SQL
  tags_raw:
  - Historical Data
  - State Vectors
  - Mode S
  - ADS-C
  - MLAT
  - SQL
  properties:
  - type: Documentation
    url: https://openskynetwork.github.io/opensky-api/trino.html
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/opensky/refs/heads/main/rate-limits/opensky-trino-api.yml
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/opensky/refs/heads/main/plans/opensky-trino-api.yml
  contact:
  - FN: OpenSky Network
    email: contact@opensky-network.org
    url: https://opensky-network.org/about/contact
- aid: opensky:opensky-flights-api
  name: OpenSky Network Flights API
  description: Endpoints for retrieving flight records including arrivals, departures, and flights by aircraft.
  humanURL: https://openskynetwork.github.io/opensky-api/rest.html
  baseURL: https://opensky-network.org/api
  tags:
  - Flights
  properties:
  - type: OpenAPI
    url: openapi/opensky-flights-api-openapi.yml
  - type: Documentation
    url: https://openskynetwork.github.io/opensky-api/rest.html
  - type: Authentication
    url: https://openskynetwork.github.io/opensky-api/rest.html#authentication
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/opensky/refs/heads/main/rate-limits/opensky-rest-api.yml
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/opensky/refs/heads/main/plans/opensky-rest-api.yml
- aid: opensky:opensky-state-vectors-api
  name: OpenSky Network State Vectors API
  description: Endpoints for retrieving real-time and historical aircraft state vectors (position, velocity, altitude, etc.).
  humanURL: https://openskynetwork.github.io/opensky-api/rest.html
  baseURL: https://opensky-network.org/api
  tags:
  - State Vectors
  properties:
  - type: OpenAPI
    url: openapi/opensky-state-vectors-api-openapi.yml
  - type: Documentation
    url: https://openskynetwork.github.io/opensky-api/rest.html
  - type: Authentication
    url: https://openskynetwork.github.io/opensky-api/rest.html#authentication
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/opensky/refs/heads/main/rate-limits/opensky-rest-api.yml
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/opensky/refs/heads/main/plans/opensky-rest-api.yml
- aid: opensky:opensky-tracks-api
  name: OpenSky Network Tracks API
  description: Endpoints for retrieving aircraft trajectory tracks with detailed waypoint data.
  humanURL: https://openskynetwork.github.io/opensky-api/rest.html
  baseURL: https://opensky-network.org/api
  tags:
  - Tracks
  properties:
  - type: OpenAPI
    url: openapi/opensky-tracks-api-openapi.yml
  - type: Documentation
    url: https://openskynetwork.github.io/opensky-api/rest.html
  - type: Authentication
    url: https://openskynetwork.github.io/opensky-api/rest.html#authentication
  - type: RateLimits
    url: https://raw.githubusercontent.com/api-evangelist/opensky/refs/heads/main/rate-limits/opensky-rest-api.yml
  - type: Plans
    url: https://raw.githubusercontent.com/api-evangelist/opensky/refs/heads/main/plans/opensky-rest-api.yml
common:
- type: Website
  url: https://opensky-network.org/
- type: CapabilityMap
  url: capabilities/opensky-capability-edges.yml
  name: OpenSky Network Business Capability Map
- type: IssueTracker
  url: https://github.com/openskynetwork/opensky-api/issues
- type: License
  name: GPL-3.0
  url: https://github.com/openskynetwork/opensky-api/blob/master/LICENSE
- type: AgenticAccess
  url: agentic-access/opensky-agentic-access.yml
- type: DomainSecurity
  url: security/opensky-domain-security.yml
- type: Authentication
  url: authentication/opensky-authentication.yml
- type: GitHub
  url: https://github.com/openskynetwork
- type: GitHubRepository
  url: https://github.com/openskynetwork/opensky-api
- type: Documentation
  url: https://openskynetwork.github.io/opensky-api/
- type: TermsOfService
  url: https://opensky-network.org/about/terms-of-use
- type: Status
  url: https://opensky-network.org/network/status
- type: Login
  url: https://opensky-network.org/login
- type: Register
  url: https://opensky-network.org/register
- type: FinOps
  url: https://raw.githubusercontent.com/api-evangelist/opensky/refs/heads/main/finops/opensky.yml
- type: Contact
  url: https://opensky-network.org/about/contact
- type: Forums
  url: https://community.opensky-network.org
- type: Twitter
  url: https://twitter.com/openskynetwork
maintainers:
- FN: API Evangelist
  url: https://apievangelist.com
  email: kin@apievangelist.com

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