Chicago Transit Authority · Authentication Profile

Chicago Transit Authority Authentication

Authentication

Chicago Transit Authority secures its APIs with apiKey across 1 declared security scheme, as derived from its OpenAPI definitions.

BusBus TrackerChicagoCTACustomer AlertsGTFSL TrainOpen DataPublic TransitReal-TimeTrainTrain TrackerTransitTransportation
Methods: apiKey Schemes: 1 OAuth flows: API key in: query

Security Schemes

apiKey apiKey
· in: query (key)

Source

Authentication Profile

Raw ↑ 
generated: '2026-07-11'
method: derived
source: openapi/cta-bus-tracker-openapi.yml, openapi/cta-train-tracker-openapi.yml
summary:
  types:
  - apiKey
  api_key_in:
  - query
schemes:
- name: apiKey
  type: apiKey
  in: query
  parameter: key
  sources:
  - openapi/cta-bus-tracker-openapi.yml
  - openapi/cta-train-tracker-openapi.yml