VATSIM

VATSIM (Virtual Air Traffic Simulation Network) is a global online flight simulation network providing real-time data about pilots, controllers, flight plans, and ATC positions. The VATSIM REST APIs allow developers to access live network data, member statistics, aviation weather, upcoming events, and authentication services for the simulation community.

VATSIM publishes 18 API contracts indexed on the APIs.io network, including Events API, METAR API, Airport info API, and 15 more. Tagged areas include Aviation, Flight Simulation, Air Traffic Control, Real-Time Data, and Community.

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

VATSIM’s developer surface includes authentication and 7 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

27.9/100 thin ▬ flat Agent 29/100 agent ready Front door AI 1/6 silent Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreeSelf serve⚡ Free to try

8 published contracts

Aviation Flight Simulation Air Traffic Control Real-Time Data Community

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 27.9/100 · thin

Contract Quality 9.1 / 19

Developer Ergonomics 3.2 / 15

Access Clarity 0.8 / 15

Operational Transparency 0.5 / 10

Contract Governance 1.2 / 9

Discoverability 5.9 / 8

Regulatory Posture 3.2 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 29/100 · agent ready

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 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 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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 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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks
Documented Reversibility +6 pts — a reversal operation in the contract, graded up when a window is documented too

7 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 5.3 — up to +18.9 composite points
Developer Ergonomics scores 21.4 — up to +15.7 composite points
Contract Quality scores 48.6 — up to +12.9 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/vatsim/apis.yml: open an issue on github.com/api-evangelist/vatsim 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 →

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.

OpenAPI

measured — observed by APIs.io (published)

OAuth 2.0

measured — observed by APIs.io (declared)

APIs 18

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

VATSIM Events API

Delivers information about upcoming events on the VATSIM network, including dates, times, organizers, airports, routes, and banner images. Publicly accessible without authentica...

VATSIM METAR API

Grants access to real-time METAR weather information for airports around the world. Accepts single or comma-delimited ICAO airport codes, supports a special "all" value for bulk...

VATSIM Connect API

OAuth 2.0 single sign-on authentication service for VATSIM members. Enables third-party applications and VATSIM organizations to authenticate users and access authorized profile...

VATSIM Slurper API

Provides real-time connection information for individual VATSIM users, delivering live session data for a given VATSIM member. Publicly accessible without authentication.

VATSIM Airport info API

The Airport info API from VATSIM — 2 operation(s) for airport info.

VATSIM Atc API

The atc API from VATSIM — 2 operation(s) for atc.

VATSIM Audio API

The Audio API from VATSIM — 2 operation(s) for audio.

VATSIM Community API

The community API from VATSIM — 1 operation(s) for community.

VATSIM Data feed API

The Data feed API from VATSIM — 1 operation(s) for data feed.

VATSIM Event info API

The Event info API from VATSIM — 6 operation(s) for event info.

VATSIM Events API

The Events API from VATSIM — 2 operation(s) for events.

VATSIM Members API

The members API from VATSIM — 7 operation(s) for members.

VATSIM METAR API

The METAR API from VATSIM — 1 operation(s) for metar.

VATSIM Orgs API

The orgs API from VATSIM — 2 operation(s) for orgs.

VATSIM Servers API

The Servers API from VATSIM — 3 operation(s) for servers.

VATSIM User API

The User API from VATSIM — 1 operation(s) for user.

VATSIM Users API

The Users API from VATSIM — 1 operation(s) for users.

VATSIM O Auth2 API

The OAuth2 API from VATSIM — 2 operation(s) for oauth2.

Scroll for all 18

Open Collections 14

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

VATSIM AIP Airport info API

OPEN COLLECTION

VATSIM AIP Airport info atc API

OPEN COLLECTION

VATSIM AIP Airport info Audio API

OPEN COLLECTION

VATSIM AIP Airport info community API

OPEN COLLECTION

VATSIM AIP Airport info Data feed API

OPEN COLLECTION

VATSIM AIP Airport info Event info API

OPEN COLLECTION

VATSIM AIP Airport info Events API

OPEN COLLECTION

VATSIM AIP Airport info members API

OPEN COLLECTION

VATSIM AIP Airport info METAR API

OPEN COLLECTION

VATSIM AIP Airport info OAuth2 API

OPEN COLLECTION

VATSIM AIP Airport info orgs API

OPEN COLLECTION

VATSIM AIP Airport info Servers API

OPEN COLLECTION

VATSIM AIP Airport info User API

OPEN COLLECTION

VATSIM AIP Airport info Users API

OPEN COLLECTION

Scroll for all 14

VATSIM API pricing

Not yet checked against VATSIM's own pricing page. Compiled by API Evangelist; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free / Open Access	Free
Authenticated / Division Access	Free

Plan details, limits and sources →

Pricing Plans 1

Published pricing tiers and plan structures.

Plans

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Rate Limits

1 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

VATSIM

SLA

FinOps 1

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

Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

VATSIM API Rules

58 rules · 48 errors 7 warnings 3 info

SPECTRAL

Security Posture 2

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

Vatsim Authentication

apiKey/oauth2 · 3 schemes

SECURITY

Vatsim Domain Security

TLSv1.3 · DNSSEC · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Vatsim Scopes

4 scopes · authorizationCode

4 scopes

SCOPES

Agentic Access 1

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

Vatsim Agentic Access

34 operations · 2 acting

AGENTIC

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

OAuthScopes

OAuthScopes

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 1

The organization behind the API

Website

Website

Source (apis.yml)

name: VATSIM
description: VATSIM (Virtual Air Traffic Simulation Network) is a global online flight simulation network providing real-time
  data about pilots, controllers, flight plans, and ATC positions. The VATSIM REST APIs allow developers to access live network
  data, member statistics, aviation weather, upcoming events, and authentication services for the simulation community.
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: true
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  generated: '2026-08-28'
  method: derived
specificationVersion: '0.23'
accessModel:
  pricing: free
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Free · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://vatsim.net/favicon.ico
tags:
- Aviation
- Flight Simulation
- Air Traffic Control
- Real-Time Data
- Community
url: https://vatsim.dev/services/apis/
apis:
- name: VATSIM Events API
  description: Delivers information about upcoming events on the VATSIM network, including dates, times, organizers, airports,
    routes, and banner images. Publicly accessible without authentication and provides listing and retrieval of scheduled
    network events.
  image: https://vatsim.net/favicon.ico
  humanURL: https://vatsim.dev/api/events-api/
  baseURL: https://api.vatsim.net/v2/events
  tags:
  - Event
  - Community
  - Scheduling
  tags_raw:
  - Events
  - Community
  - Scheduling
  properties:
  - type: Documentation
    url: https://vatsim.dev/api/events-api/
  contact:
  - FN: VATSIM Technology Team
    email: tech@vatsim.net
- name: VATSIM METAR API
  description: Grants access to real-time METAR weather information for airports around the world. Accepts single or comma-delimited
    ICAO airport codes, supports a special "all" value for bulk retrieval, and returns data in either plain text or JSON format.
    No authentication required.
  image: https://vatsim.net/favicon.ico
  humanURL: https://vatsim.dev/api/metar-api/
  baseURL: https://metar.vatsim.net
  tags:
  - METAR
  - Weather
  - Aviation
  - Airports
  properties:
  - type: Documentation
    url: https://vatsim.dev/api/metar-api/
  contact:
  - FN: VATSIM Technology Team
    email: tech@vatsim.net
- name: VATSIM Connect API
  description: OAuth 2.0 single sign-on authentication service for VATSIM members. Enables third-party applications and VATSIM
    organizations to authenticate users and access authorized profile data including full name, email, VATSIM ratings, division
    membership, and country of residence.
  image: https://vatsim.net/favicon.ico
  humanURL: https://vatsim.dev/api/connect-api/
  baseURL: https://auth.vatsim.net
  tags:
  - Authentication
  - OAuth
  - SSO
  - Identity
  tags_raw:
  - Authentication
  - OAuth2
  - SSO
  - Identity
  properties:
  - type: Documentation
    url: https://vatsim.dev/api/connect-api/vatsim-connect-api/
  contact:
  - FN: VATSIM Technology Team
    email: tech@vatsim.net
- name: VATSIM Slurper API
  description: Provides real-time connection information for individual VATSIM users, delivering live session data for a given
    VATSIM member. Publicly accessible without authentication.
  image: https://vatsim.net/favicon.ico
  humanURL: https://vatsim.dev/api/slurper-api/
  baseURL: https://api.vatsim.net/v2
  tags:
  - User
  - Connections
  - Real-Time
  tags_raw:
  - Users
  - Connections
  - Real-Time
  properties:
  - type: Documentation
    url: https://vatsim.dev/api/slurper-api/
  contact:
  - FN: VATSIM Technology Team
    email: tech@vatsim.net
- aid: vatsim:vatsim-airport-info-api
  name: VATSIM Airport info API
  description: The Airport info API from VATSIM — 2 operation(s) for airport info.
  humanURL: https://vatsim.dev/api/core-api/
  baseURL: https://api.vatsim.net/v2
  tags:
  - Airport info
  properties:
  - type: OpenAPI
    url: openapi/vatsim-airport-info-api-openapi.yml
  - type: Documentation
    url: https://vatsim.dev/api/core-api/
  - type: Documentation
    url: https://vatsim.dev/api/data-api/
- aid: vatsim:vatsim-atc-api
  name: VATSIM Atc API
  description: The atc API from VATSIM — 2 operation(s) for atc.
  humanURL: https://vatsim.dev/api/core-api/
  baseURL: https://api.vatsim.net/v2
  tags:
  - ATC
  tags_raw:
  - atc
  properties:
  - type: OpenAPI
    url: openapi/vatsim-atc-api-openapi.yml
  - type: Documentation
    url: https://vatsim.dev/api/core-api/
  - type: Documentation
    url: https://vatsim.dev/api/data-api/
- aid: vatsim:vatsim-audio-api
  name: VATSIM Audio API
  description: The Audio API from VATSIM — 2 operation(s) for audio.
  humanURL: https://vatsim.dev/api/core-api/
  baseURL: https://api.vatsim.net/v2
  tags:
  - Audio
  properties:
  - type: OpenAPI
    url: openapi/vatsim-audio-api-openapi.yml
  - type: Documentation
    url: https://vatsim.dev/api/core-api/
  - type: Documentation
    url: https://vatsim.dev/api/data-api/
- aid: vatsim:vatsim-community-api
  name: VATSIM Community API
  description: The community API from VATSIM — 1 operation(s) for community.
  humanURL: https://vatsim.dev/api/core-api/
  baseURL: https://api.vatsim.net/v2
  tags:
  - Community
  tags_raw:
  - community
  properties:
  - type: OpenAPI
    url: openapi/vatsim-community-api-openapi.yml
  - type: Documentation
    url: https://vatsim.dev/api/core-api/
  - type: Documentation
    url: https://vatsim.dev/api/data-api/
- aid: vatsim:vatsim-data-feed-api
  name: VATSIM Data feed API
  description: The Data feed API from VATSIM — 1 operation(s) for data feed.
  humanURL: https://vatsim.dev/api/core-api/
  baseURL: https://api.vatsim.net/v2
  tags:
  - Data Feed
  tags_raw:
  - Data feed
  properties:
  - type: OpenAPI
    url: openapi/vatsim-data-feed-api-openapi.yml
  - type: Documentation
    url: https://vatsim.dev/api/core-api/
  - type: Documentation
    url: https://vatsim.dev/api/data-api/
- aid: vatsim:vatsim-event-info-api
  name: VATSIM Event info API
  description: The Event info API from VATSIM — 6 operation(s) for event info.
  humanURL: https://vatsim.dev/api/core-api/
  baseURL: https://api.vatsim.net/v2
  tags:
  - Event info
  properties:
  - type: OpenAPI
    url: openapi/vatsim-event-info-api-openapi.yml
  - type: Documentation
    url: https://vatsim.dev/api/core-api/
  - type: Documentation
    url: https://vatsim.dev/api/data-api/
- aid: vatsim:vatsim-events-api
  name: VATSIM Events API
  description: The Events API from VATSIM — 2 operation(s) for events.
  humanURL: https://vatsim.dev/api/core-api/
  baseURL: https://api.vatsim.net/v2
  tags:
  - Event
  tags_raw:
  - Events
  properties:
  - type: OpenAPI
    url: openapi/vatsim-events-api-openapi.yml
  - type: Documentation
    url: https://vatsim.dev/api/core-api/
  - type: Documentation
    url: https://vatsim.dev/api/data-api/
- aid: vatsim:vatsim-members-api
  name: VATSIM Members API
  description: The members API from VATSIM — 7 operation(s) for members.
  humanURL: https://vatsim.dev/api/core-api/
  baseURL: https://api.vatsim.net/v2
  tags:
  - Members
  tags_raw:
  - members
  properties:
  - type: OpenAPI
    url: openapi/vatsim-members-api-openapi.yml
  - type: Documentation
    url: https://vatsim.dev/api/core-api/
  - type: Documentation
    url: https://vatsim.dev/api/data-api/
- aid: vatsim:vatsim-metar-api
  name: VATSIM METAR API
  description: The METAR API from VATSIM — 1 operation(s) for metar.
  humanURL: https://vatsim.dev/api/core-api/
  baseURL: https://api.vatsim.net/v2
  tags:
  - METAR
  properties:
  - type: OpenAPI
    url: openapi/vatsim-metar-api-openapi.yml
  - type: Documentation
    url: https://vatsim.dev/api/core-api/
  - type: Documentation
    url: https://vatsim.dev/api/data-api/
- aid: vatsim:vatsim-orgs-api
  name: VATSIM Orgs API
  description: The orgs API from VATSIM — 2 operation(s) for orgs.
  humanURL: https://vatsim.dev/api/core-api/
  baseURL: https://api.vatsim.net/v2
  tags:
  - Organization
  tags_raw:
  - orgs
  properties:
  - type: OpenAPI
    url: openapi/vatsim-orgs-api-openapi.yml
  - type: Documentation
    url: https://vatsim.dev/api/core-api/
  - type: Documentation
    url: https://vatsim.dev/api/data-api/
- aid: vatsim:vatsim-servers-api
  name: VATSIM Servers API
  description: The Servers API from VATSIM — 3 operation(s) for servers.
  humanURL: https://vatsim.dev/api/core-api/
  baseURL: https://api.vatsim.net/v2
  tags:
  - Servers
  properties:
  - type: OpenAPI
    url: openapi/vatsim-servers-api-openapi.yml
  - type: Documentation
    url: https://vatsim.dev/api/core-api/
  - type: Documentation
    url: https://vatsim.dev/api/data-api/
- aid: vatsim:vatsim-user-api
  name: VATSIM User API
  description: The User API from VATSIM — 1 operation(s) for user.
  humanURL: https://vatsim.dev/api/core-api/
  baseURL: https://api.vatsim.net/v2
  tags:
  - User
  properties:
  - type: OpenAPI
    url: openapi/vatsim-user-api-openapi.yml
  - type: Documentation
    url: https://vatsim.dev/api/core-api/
  - type: Documentation
    url: https://vatsim.dev/api/data-api/
- aid: vatsim:vatsim-users-api
  name: VATSIM Users API
  description: The Users API from VATSIM — 1 operation(s) for users.
  humanURL: https://vatsim.dev/api/core-api/
  baseURL: https://api.vatsim.net/v2
  tags:
  - User
  tags_raw:
  - Users
  properties:
  - type: OpenAPI
    url: openapi/vatsim-users-api-openapi.yml
  - type: Documentation
    url: https://vatsim.dev/api/core-api/
  - type: Documentation
    url: https://vatsim.dev/api/data-api/
- aid: vatsim:vatsim-oauth2-api
  name: VATSIM O Auth2 API
  description: The OAuth2 API from VATSIM — 2 operation(s) for oauth2.
  humanURL: https://vatsim.dev/api/events-api/
  baseURL: https://api.vatsim.net/v2/events
  tags:
  - OAuth
  - Authentication
  tags_raw:
  - OAuth2
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/vatsim-oauth2-api-openapi.yml
  - type: Documentation
    url: https://vatsim.dev/api/core-api/
  - type: Documentation
    url: https://vatsim.dev/api/data-api/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
modified: '2026-09-16'
common:
- type: Plans
  url: plans/plans.yml
- type: RateLimits
  url: rate-limits/rate-limits.yml
- type: FinOps
  url: finops/finops.yml
- type: Website
  url: https://vatsim.dev
- type: AgenticAccess
  url: agentic-access/vatsim-agentic-access.yml
- type: DomainSecurity
  url: security/vatsim-domain-security.yml
- type: Authentication
  url: authentication/vatsim-authentication.yml
- type: OAuthScopes
  url: scopes/vatsim-scopes.yml

VATSIM API — frequently asked questions

Does VATSIM have an API?

Yes. APIs.io lists 18 APIs from VATSIM, including VATSIM Events API, VATSIM METAR API and VATSIM Connect API, and 15 more.

Is there an OpenAPI specification for the VATSIM API?

Yes. APIs.io indexes 16 OpenAPI specifications for VATSIM, each linked for download from this page.

How do I authenticate with the VATSIM API?

VATSIM uses bearer-token authentication (apiKey/oauth2 · 3 schemes). The details are profiled on APIs.io as Vatsim Authentication.

How much does the VATSIM API cost?

APIs.io lists 2 pricing plans for VATSIM, with each plan's price, limits and inclusions under Pricing on this page.

Is the VATSIM API ready for AI agents?

VATSIM has a Kin Score of 27.9 out of 100 (thin) and an Agent Readiness score of 28.8 (agent-ready), scored by API Evangelist on 2026-11-06.

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