OneBusAway

OneBusAway is an open-source real-time transit information platform managed by the Open Transit Software Foundation. It provides transit riders with real-time arrival predictions, service alerts, and schedule data for buses, trains, and other transit modes. The platform exposes a RESTful API that lets developers access agency information, stop data, route details, trip information, real-time arrivals and departures, vehicle positions, and service alerts. Authentication uses an API key passed as a query parameter. The reference deployment runs at api.pugetsound.onebusaway.org; many transit agencies host their own OneBusAway instances using the same API contract. Official SDKs are published for Go, Java, Kotlin, JavaScript/Node.js, Python, and Ruby, all generated from a shared OpenAPI 3.0 specification in the sdk-config repository.

OneBusAway publishes 2 APIs on the APIs.io network: default API and Where API. Tagged areas include Transit, Public Transit, Real-Time, Arrivals, and Departures.

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

OneBusAway’s developer surface includes authentication, developer portal, documentation, getting-started guide, and 23 more developer resources.

🌐 Visit website 📡 Source on GitHub

36.8/100 thin ▬ flat Agent 35/100 agent ready Full breakdown ↓
scored 2026-08-20 · rubric v0.12.0

AccessFreeSelf serve⚡ Free to try

2 APIs

TransitPublic TransitReal-TimeArrivalsDeparturesBusGTFSOpen-SourceStop DataTrip PlanningService AlertsVehicle PositionsOpen Data

Kin Score

Kin Score How this is scored →
scored 2026-08-20 · rubric v0.12.0

Composite quality — 36.8/100 · thin

Contract Quality 10.8 / 21

Developer Ergonomics 8.5 / 17

Access Clarity 3.6 / 17

Operational Transparency 0.3 / 11

Contract Governance 1.0 / 10

Discoverability 5.8 / 9

Regulatory Posture 4.7 / 15

Agent readiness — 35/100 · 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 0 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 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

Regulatory Posture applies to this provider. Its tags matched the Government & Public Sector 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/onebusaway: 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 2

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

JSON Schema 61

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

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Examples 30

Example request and response payloads for these APIs.

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AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Portal

Portal

GettingStarted

GettingStarted

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

Documentation

Documentation

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 14

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

GitHubOrganization

GitHubRepository

GitHubRepository

GitHubRepository

GitHubRepository

GitHubRepository

GitHubRepository

GitHubRepository

GitHubRepository

GitHubRepository

GitHubRepository

GitHubRepository

GitHubRepository

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Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Commercial 2

Pricing, plans, and the legal terms of use

License

License

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

AppStore

AppStore

PlayStore

PlayStore

Source (apis.yml)

aid: onebusaway
name: OneBusAway
description: OneBusAway is an open-source real-time transit information platform managed by the Open Transit Software Foundation.
  It provides transit riders with real-time arrival predictions, service alerts, and schedule data for buses, trains, and
  other transit modes. The platform exposes a RESTful API that lets developers access agency information, stop data, route
  details, trip information, real-time arrivals and departures, vehicle positions, and service alerts. Authentication uses
  an API key passed as a query parameter. The reference deployment runs at api.pugetsound.onebusaway.org; many transit agencies
  host their own OneBusAway instances using the same API contract. Official SDKs are published for Go, Java, Kotlin, JavaScript/Node.js,
  Python, and Ruby, all generated from a shared OpenAPI 3.0 specification in the sdk-config repository.
type: Index
accessModel:
  pricing: free
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Free · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
position: Provider
access: Open
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/onebusaway.png
tags:
- Transit
- Public Transit
- Real-Time
- Arrivals
- Departures
- Bus
- GTFS
- Open-Source
- Stop Data
- Trip Planning
- Service Alerts
- Vehicle Positions
- Open Data
tags_raw:
- Transit
- Public Transit
- Real-Time
- Arrivals
- Departures
- Bus
- GTFS
- Open Source
- Stop Data
- Trip Planning
- Service Alerts
- Vehicle Positions
- Open Data
url: https://raw.githubusercontent.com/api-evangelist/onebusaway/refs/heads/main/apis.yml
created: '2026-06-13'
modified: '2026-06-13'
specificationVersion: '0.23'
apis:
- aid: onebusaway:onebusaway-default-api
  name: OneBusAway default API
  description: The default API from OneBusAway — 13 operation(s) for default.
  humanURL: https://developer.onebusaway.org/api/where
  baseURL: https://api.pugetsound.onebusaway.org
  tags: []
  tags_raw:
  - default
  properties:
  - type: OpenAPI
    url: openapi/onebusaway-default-api-openapi.yml
  - type: Documentation
    url: https://developer.onebusaway.org/api/where
  - type: Documentation
    url: https://developer.onebusaway.org/api/where/methods
  - type: Documentation
    url: https://developer.onebusaway.org/api/where/elements
  - type: SDKs
    url: https://developer.onebusaway.org/api/sdk
  - type: GitHubRepository
    url: https://github.com/OneBusAway/sdk-config
- aid: onebusaway:onebusaway-where-api
  name: OneBusAway Where API
  description: The Where API from OneBusAway — 17 operation(s) for where.
  humanURL: https://developer.onebusaway.org/api/where
  baseURL: https://api.pugetsound.onebusaway.org
  tags:
  - Where
  properties:
  - type: OpenAPI
    url: openapi/onebusaway-where-api-openapi.yml
  - type: Documentation
    url: https://developer.onebusaway.org/api/where
  - type: Documentation
    url: https://developer.onebusaway.org/api/where/methods
  - type: Documentation
    url: https://developer.onebusaway.org/api/where/elements
  - type: SDKs
    url: https://developer.onebusaway.org/api/sdk
  - type: GitHubRepository
    url: https://github.com/OneBusAway/sdk-config
common:
- type: License
  name: Apache-2.0
  url: https://github.com/OneBusAway/sdk-config/blob/main/LICENSE
- type: AgenticAccess
  url: agentic-access/onebusaway-agentic-access.yml
- type: DomainSecurity
  url: security/onebusaway-domain-security.yml
- type: Authentication
  url: authentication/onebusaway-authentication.yml
- type: Website
  url: https://opentransitsoftwarefoundation.org/onebusaway/
- type: Portal
  url: https://developer.onebusaway.org/
- type: Documentation
  url: https://developer.onebusaway.org/api/where
- type: Documentation
  url: https://developer.onebusaway.org/api/where/methods
- type: Documentation
  url: https://developer.onebusaway.org/api/where/elements
- type: GettingStarted
  url: https://developer.onebusaway.org/guides/api-webapp-configuration-guide
- type: SDKs
  url: https://developer.onebusaway.org/api/sdk
- type: GitHubOrganization
  url: https://github.com/OneBusAway
- type: GitHubRepository
  url: https://github.com/OneBusAway/onebusaway-application-modules
  name: Core Application Modules (Java)
- type: GitHubRepository
  url: https://github.com/OneBusAway/maglev
  name: Maglev — Next-Gen OBA REST API Server (Go)
- type: GitHubRepository
  url: https://github.com/OneBusAway/sdk-config
  name: OpenAPI Specification and SDK Config
- type: GitHubRepository
  url: https://github.com/OneBusAway/js-sdk
  name: JavaScript / Node.js SDK
- type: GitHubRepository
  url: https://github.com/OneBusAway/python-sdk
  name: Python SDK
- type: GitHubRepository
  url: https://github.com/OneBusAway/go-sdk
  name: Go SDK
- type: GitHubRepository
  url: https://github.com/OneBusAway/java-sdk
  name: Java SDK
- type: GitHubRepository
  url: https://github.com/OneBusAway/kotlin-sdk
  name: Kotlin SDK
- type: GitHubRepository
  url: https://github.com/OneBusAway/ruby-sdk
  name: Ruby SDK
- type: GitHubRepository
  url: https://github.com/OneBusAway/onebusaway-android
  name: Android App
- type: GitHubRepository
  url: https://github.com/OneBusAway/onebusaway-ios
  name: iOS App
- type: GitHubRepository
  url: https://github.com/OneBusAway/wayfinder
  name: Wayfinder Web App (SvelteKit)
- type: AppStore
  url: https://apps.apple.com/app/onebusaway/id329380089
- type: PlayStore
  url: https://play.google.com/store/apps/details?id=com.joulespersecond.seattlebusbot
- type: PrivacyPolicy
  url: https://opentransitsoftwarefoundation.org/privacy-policy/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

OneBusAway

APIs 2

Open Collections 3

Pricing Plans 1

Semantic Vocabularies 1

Spectral Rules 1

JSON Schema 61

Examples 30

Security Posture 2

Agentic Access 1

Get Started 2

Documentation 3

Agent Surfaces 1

Build 14

Access & Security 2

Commercial 2

Company 1

Other 2

Source (apis.yml)