generated: '2026-08-04'
method: searched
source: https://github.com/engine-public/engine-partner-api/releases
summary: >-
  The Omni Partner API changelog is published as dated GitHub Releases on
  engine-public/engine-partner-api. Each release ships three downloadable artifacts — the
  Swagger/OpenAPI document, the protobuf descriptor set, and a proto source archive — plus
  matching Maven Central publications under com.engine. There is no separate changelog page on
  the documentation site; the releases feed is the changelog.
scheme: semver
current_version: 2.4.0
current_released: '2026-07-20'
feed: https://github.com/engine-public/engine-partner-api/releases.atom
releases_url: https://github.com/engine-public/engine-partner-api/releases
release_count: 17
first_release: '2025-02-05'
artifacts_per_release:
  - engine-partner-api-<version>.swagger.json
  - engine-partner-api-descriptor_set-<version>.desc
  - engine-partner-api-protos-<version>.zip
entries:
  - version: 2.4.0
    date: '2026-07-20'
    breaking: false
    highlights:
      - Release notes carry only the auto-generated full-changelog compare link.
    compare: https://github.com/engine-public/engine-partner-api/compare/2.3.0...2.4.0
  - version: 2.3.0
    date: '2026-07-01'
    breaking: false
    highlights:
      - Release notes carry only the auto-generated full-changelog compare link.
    compare: https://github.com/engine-public/engine-partner-api/compare/2.2.0...2.3.0
  - version: 2.2.0
    date: '2026-05-18'
    breaking: false
    additions:
      - Introduces the SellType proto and integrates it into the offer summary.
      - Adds last_four and card_brand string fields to AppliedCardPayment so partners can identify the payment card used on booking responses.
      - Moves shared repository context and protobuf policies into AGENTS.md (no rules or definitions changed).
    compare: https://github.com/engine-public/engine-partner-api/compare/2.1.1...2.2.0
  - version: 2.1.1
    date: '2026-03-04'
    breaking: false
    additions:
      - Surface client-provided rate codes in shopping responses.
    compare: https://github.com/engine-public/engine-partner-api/compare/2.1.0...2.1.1
  - version: 2.1.0
    date: '2026-02-25'
    breaking: false
    additions:
      - Added support for payment by card.
    compare: https://github.com/engine-public/engine-partner-api/compare/2.0.0...2.1.0
  - version: 2.0.0
    date: '2026-02-11'
    breaking: true
    additions:
      - Introduce Transactional APIs for lodging.
      - Add guest and property details to the Booking APIs.
      - Property content enhancements; folio and get-property documentation.
    breaking_changes:
      - Price.taxes deprecated; will be removed per the deprecation policy.
      - Price.fees deprecated; will be removed per the deprecation policy.
      - taxes and fees merged into a new taxes_and_fees field.
    compare: https://github.com/engine-public/engine-partner-api/compare/1.0.0...2.0.0
  - version: 2.0.0-pre.1 .. 2.0.0-pre.8
    date_range: '2025-06-16 .. 2025-12-09'
    breaking: false
    note: Pre-release series leading to 2.0.0 GA. End of life 2026-09-01.
  - version: 0.0.1-pre.2 / 0.0.1-pre.3
    date_range: '2025-02-05 .. 2025-02-24'
    breaking: false
    note: Initial content-only preview (content.swagger.json). End of life 2026-09-01.
related:
  lifecycle: lifecycle/hotel-engine-lifecycle.yml