generated: '2026-07-11'
method: derived
source: openapi/bill-openapi.yml
summary:
  types:
  - apiKey
  api_key_in:
  - header
schemes:
- name: sessionAuth
  type: apiKey
  in: header
  parameter: sessionId
  description: |-
    Session identifier obtained from `POST /login`. Expires after 35 minutes
    of inactivity. A `devKey` (developer key) is also required on requests
    and is sent alongside `sessionId` in the appropriate header per BILL's
    official reference.
  sources:
  - openapi/bill-openapi.yml