generated: '2026-07-17'
method: searched
source: https://developer.apperio.com/ — "Change Log for Version 1.5" section of the Apperio API Documentation
docs: https://developer.apperio.com/
description: >-
  Apperio publishes its API changelog inline in the OpenAPI documentation. Major
  versions carry semantic-versioning guarantees. This captures the documented
  version history through v1.5.
versioning:
  scheme: uri-path major version + documentation minor version
  current: '1.5'
  api_path_version: v1
  detail: lifecycle/apperio-lifecycle.yml
entries:
  - version: '1.5'
    latest: true
    additions:
      - Updated engagement and invoice filter endpoint parameter documentation
      - Added documentation for some e-billing endpoints
  - version: '1.4'
    additions:
      - Added basic information about the matter header endpoint
  - version: '1.3'
    additions:
      - Updated rate limits
      - Fixed analytics URL and Authorization header documentation
  - version: '1.2'
    additions:
      - Key management (API token endpoints)
      - HTTP 429 response
      - Glossary definitions
    breaking:
      - Versioning moved from per-service to a global API version
  - version: '1.1'
    additions:
      - Matter Tag Set discovery endpoint
  - version: '1.0'
    additions:
      - Versioning strategy
      - Glossary
  - version: '0.2'
    additions:
      - Invoice discovery endpoint
      - Null choice filter
      - Fair usage policy
      - Capabilities for law firm and business users
  - version: '0.1'
    additions:
      - Filter resource discovery API