MBTA website screenshot

MBTA

The Massachusetts Bay Transportation Authority (MBTA) V3 API provides fast, easy access to MBTA schedules, alerts, and real-time information using the JSON:API format. Free API keys are available via the developer portal.

MBTA publishes 12 APIs on the APIs.io network, including Alerts API, Facilities API, Lines API, and 9 more. Tagged areas include Boston, Massachusetts, Public Transportation, Real-Time, and Transit.

MBTA’s developer surface includes authentication, developer portal, signup flow, engineering blog, and 5 more developer resources.

🌐 Visit website 📡 Source on GitHub
40.8/100 thin ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessFreemiumSelf serve⚡ Free to try
12 APIs
BostonMassachusettsPublic TransportationReal-TimeTransit

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 40.8/100 · thin
Contract Quality 14.3 / 25
Developer Ergonomics 4.3 / 20
Commercial Clarity 10.0 / 20
Operational Transparency 4.8 / 13
Governance 0.0 / 12
Discoverability 7.4 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
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
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/mbta: 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 12

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

MBTA Alerts API

Service disruption communications

MBTA Facilities API

Stop amenities such as elevators and bike racks

MBTA Lines API

Transit lines grouped by mode

MBTA Predictions API

Real-time arrival and departure forecasts

MBTA RoutePatterns API

Possible travel patterns within a route

MBTA Routes API

Route information per line

MBTA Schedules API

Scheduled stop times

MBTA Services API

Operational dates and frequencies

MBTA Shapes API

Trip route polylines for mapping

MBTA Stops API

Boarding and disembarking locations

MBTA Trips API

Vehicle journey definitions

MBTA Vehicles API

Vehicle movement and position data

Scroll for all 12

Open Collections 1

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

MBTA V3 API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Mbta Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Mbta Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Mbta Finops

FINOPS

Security Posture 2

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

Mbta Authentication

apiKey · 2 schemes

SECURITY

Mbta Domain Security

TLSv1.2 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Mbta Agentic Access

22 operations

22 operations · 0 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Portal
Portal
 Signup
Signup

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

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

Commercial 1

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService

Company 2

The organization behind the API

LinkedIn
LinkedIn
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: mbta
name: MBTA
description: The Massachusetts Bay Transportation Authority (MBTA) V3 API provides fast, easy access to MBTA schedules, alerts,
  and real-time information using the JSON:API format. Free API keys are available via the developer portal.
type: Index
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · 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/mbta.png
tags:
- Boston
- Massachusetts
- Public Transportation
- Real-Time
- Transit
url: https://raw.githubusercontent.com/api-evangelist/mbta/refs/heads/main/apis.yml
created: '2025-02-24'
modified: '2026-05-19'
specificationVersion: '0.19'
apis:
- aid: mbta:mbta-alerts-api
  name: MBTA Alerts API
  description: Service disruption communications
  humanURL: https://www.mbta.com/developers/v3-api
  baseURL: https://api-v3.mbta.com
  tags:
  - Alerts
  properties:
  - type: OpenAPI
    url: openapi/mbta-alerts-api-openapi.yml
  - type: Documentation
    url: https://www.mbta.com/developers/v3-api
  - type: Reference
    url: https://api-v3.mbta.com/
  - type: GettingStarted
    url: https://www.mbta.com/developers
- aid: mbta:mbta-facilities-api
  name: MBTA Facilities API
  description: Stop amenities such as elevators and bike racks
  humanURL: https://www.mbta.com/developers/v3-api
  baseURL: https://api-v3.mbta.com
  tags:
  - Facilities
  properties:
  - type: OpenAPI
    url: openapi/mbta-facilities-api-openapi.yml
  - type: Documentation
    url: https://www.mbta.com/developers/v3-api
  - type: Reference
    url: https://api-v3.mbta.com/
  - type: GettingStarted
    url: https://www.mbta.com/developers
- aid: mbta:mbta-lines-api
  name: MBTA Lines API
  description: Transit lines grouped by mode
  humanURL: https://www.mbta.com/developers/v3-api
  baseURL: https://api-v3.mbta.com
  tags:
  - Lines
  properties:
  - type: OpenAPI
    url: openapi/mbta-lines-api-openapi.yml
  - type: Documentation
    url: https://www.mbta.com/developers/v3-api
  - type: Reference
    url: https://api-v3.mbta.com/
  - type: GettingStarted
    url: https://www.mbta.com/developers
- aid: mbta:mbta-predictions-api
  name: MBTA Predictions API
  description: Real-time arrival and departure forecasts
  humanURL: https://www.mbta.com/developers/v3-api
  baseURL: https://api-v3.mbta.com
  tags:
  - Predictions
  properties:
  - type: OpenAPI
    url: openapi/mbta-predictions-api-openapi.yml
  - type: Documentation
    url: https://www.mbta.com/developers/v3-api
  - type: Reference
    url: https://api-v3.mbta.com/
  - type: GettingStarted
    url: https://www.mbta.com/developers
- aid: mbta:mbta-routepatterns-api
  name: MBTA RoutePatterns API
  description: Possible travel patterns within a route
  humanURL: https://www.mbta.com/developers/v3-api
  baseURL: https://api-v3.mbta.com
  tags:
  - RoutePatterns
  properties:
  - type: OpenAPI
    url: openapi/mbta-routepatterns-api-openapi.yml
  - type: Documentation
    url: https://www.mbta.com/developers/v3-api
  - type: Reference
    url: https://api-v3.mbta.com/
  - type: GettingStarted
    url: https://www.mbta.com/developers
- aid: mbta:mbta-routes-api
  name: MBTA Routes API
  description: Route information per line
  humanURL: https://www.mbta.com/developers/v3-api
  baseURL: https://api-v3.mbta.com
  tags:
  - Routes
  properties:
  - type: OpenAPI
    url: openapi/mbta-routes-api-openapi.yml
  - type: Documentation
    url: https://www.mbta.com/developers/v3-api
  - type: Reference
    url: https://api-v3.mbta.com/
  - type: GettingStarted
    url: https://www.mbta.com/developers
- aid: mbta:mbta-schedules-api
  name: MBTA Schedules API
  description: Scheduled stop times
  humanURL: https://www.mbta.com/developers/v3-api
  baseURL: https://api-v3.mbta.com
  tags:
  - Schedules
  properties:
  - type: OpenAPI
    url: openapi/mbta-schedules-api-openapi.yml
  - type: Documentation
    url: https://www.mbta.com/developers/v3-api
  - type: Reference
    url: https://api-v3.mbta.com/
  - type: GettingStarted
    url: https://www.mbta.com/developers
- aid: mbta:mbta-services-api
  name: MBTA Services API
  description: Operational dates and frequencies
  humanURL: https://www.mbta.com/developers/v3-api
  baseURL: https://api-v3.mbta.com
  tags:
  - Services
  properties:
  - type: OpenAPI
    url: openapi/mbta-services-api-openapi.yml
  - type: Documentation
    url: https://www.mbta.com/developers/v3-api
  - type: Reference
    url: https://api-v3.mbta.com/
  - type: GettingStarted
    url: https://www.mbta.com/developers
- aid: mbta:mbta-shapes-api
  name: MBTA Shapes API
  description: Trip route polylines for mapping
  humanURL: https://www.mbta.com/developers/v3-api
  baseURL: https://api-v3.mbta.com
  tags:
  - Shapes
  properties:
  - type: OpenAPI
    url: openapi/mbta-shapes-api-openapi.yml
  - type: Documentation
    url: https://www.mbta.com/developers/v3-api
  - type: Reference
    url: https://api-v3.mbta.com/
  - type: GettingStarted
    url: https://www.mbta.com/developers
- aid: mbta:mbta-stops-api
  name: MBTA Stops API
  description: Boarding and disembarking locations
  humanURL: https://www.mbta.com/developers/v3-api
  baseURL: https://api-v3.mbta.com
  tags:
  - Stops
  properties:
  - type: OpenAPI
    url: openapi/mbta-stops-api-openapi.yml
  - type: Documentation
    url: https://www.mbta.com/developers/v3-api
  - type: Reference
    url: https://api-v3.mbta.com/
  - type: GettingStarted
    url: https://www.mbta.com/developers
- aid: mbta:mbta-trips-api
  name: MBTA Trips API
  description: Vehicle journey definitions
  humanURL: https://www.mbta.com/developers/v3-api
  baseURL: https://api-v3.mbta.com
  tags:
  - Trips
  properties:
  - type: OpenAPI
    url: openapi/mbta-trips-api-openapi.yml
  - type: Documentation
    url: https://www.mbta.com/developers/v3-api
  - type: Reference
    url: https://api-v3.mbta.com/
  - type: GettingStarted
    url: https://www.mbta.com/developers
- aid: mbta:mbta-vehicles-api
  name: MBTA Vehicles API
  description: Vehicle movement and position data
  humanURL: https://www.mbta.com/developers/v3-api
  baseURL: https://api-v3.mbta.com
  tags:
  - Vehicles
  properties:
  - type: OpenAPI
    url: openapi/mbta-vehicles-api-openapi.yml
  - type: Documentation
    url: https://www.mbta.com/developers/v3-api
  - type: Reference
    url: https://api-v3.mbta.com/
  - type: GettingStarted
    url: https://www.mbta.com/developers
common:
- type: AgenticAccess
  url: agentic-access/mbta-agentic-access.yml
- type: DomainSecurity
  url: security/mbta-domain-security.yml
- type: Authentication
  url: authentication/mbta-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/mbta
- type: Portal
  url: https://www.mbta.com/developers
- type: Signup
  url: https://api-v3.mbta.com/
- type: GitHubOrganization
  url: https://github.com/mbta
- type: TermsOfService
  url: https://www.mass.gov/files/documents/2017/10/27/massdot-developers-license-agreement.pdf
- url: https://www.mbta.com/news/rss.xml
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com