FlixBus · Authentication Profile

Flixbus Authentication

Authentication

FlixBus secures its APIs with oauth2 across 1 declared security scheme, as derived from its OpenAPI definitions. OAuth 2.0 is offered via the authorizationCode flow(s).

CompanyTransportationTravelMobilityBusRailTicketingGTFSOpen DataDistribution
Methods: oauth2 Schemes: 1 OAuth flows: authorizationCode API key in:

Security Schemes

EntraID oauth2
· flows: authorizationCode

Source

Authentication Profile

flixbus-authentication.yml Raw ↑ 
generated: '2026-08-04'
method: searched
source: >-
  https://developer.api.flixbus.com/static/js/main.66632736.js (portal runtime config)
  and live anonymous probes of https://global.api.flixbus.com
docs: https://developer.api.flixbus.com/
summary:
  types: [oauth2]
  api_key_in: []
  oauth2_flows: [authorizationCode]
  spec_derived: false
  note: >-
    No OpenAPI is publicly reachable, so this profile is observed rather than derived
    from securitySchemes. It describes the authentication the Flix Developer Portal
    itself performs; the partner API's issued credentials are documented only behind
    that login.
schemes:
- name: EntraID
  type: oauth2
  provider: Microsoft Entra ID (Azure AD)
  flows:
  - flow: authorizationCode
    tenant_id: d8d0ad3e-8bcf-48e9-9bb2-aee17c6c4fd5
    client_id: 29f56109-061f-4497-adc6-a341b8da145c
    scope: api://5cd49e44-b725-40d7-949e-cfcd481d5201/user_impersonation
    library: MSAL (@azure/msal-browser)
  applies_to: https://global.api.flixbus.com/api
  presentation: 'Authorization: Bearer <access_token>'
  sources: ['https://developer.api.flixbus.com/static/js/main.66632736.js']
gated:
  portal: >-
    developer.api.flixbus.com requires a Microsoft Entra ID sign-in before any API
    reference, getting-started guide, changelog or Postman collection is visible.
  gateway_observations:
  - {url: 'https://global.api.flixbus.com/', http_status: 403}
  - {url: 'https://global.api.flixbus.com/api/apis', http_status: 401, body: '{"message":"Unauthorized"}'}
  - {url: 'https://global.api.flixbus.com/search/service/v4/search', http_status: 400}
onboarding:
  how_to_get_credentials: >-
    Distribution / dynamic-integration access (API, GTFS, white label, metasearch) is
    requested by emailing online-distribution@flixbus.com with company details, domains
    and monthly visitor numbers. Static affiliate integration runs through AWIN.
  contact: online-distribution@flixbus.com
  url: https://global.flixbus.com/company/partners/affiliate-partners
unauthenticated_surfaces:
- name: GTFS Schedule feeds
  auth: none
  urls:
  - https://gtfs.gis.flix.tech/gtfs_generic_eu.zip
  - https://gtfs.gis.flix.tech/gtfs_generic_us.zip
  - https://gtfs.gis.flix.tech/gtfs_generic_gb.zip
x-evidence:
  fetched: '2026-08-04'