specification: API Commons ChangeLog
specificationVersion: '0.1'
provider: Yahoo
providerId: yahoo
generated: '2026-08-28'
method: searched
source: >-
  https://help.yahooinc.com/dsp-api/docs/traffic-api-release-notes ,
  https://help.yahooinc.com/dsp-api/docs/reporting-api-release-notes
docs:
  - https://help.yahooinc.com/dsp-api/docs/traffic-api-release-notes
  - https://help.yahooinc.com/dsp-api/docs/reporting-api-release-notes
  - https://help.yahooinc.com/dsp-api/docs/conversion-api-release-notes
  - https://help.yahooinc.com/dsp-api/docs/byoa-api-release-notes
description: >-
  Yahoo maintains dated release notes per ad-tech API, split by year, each entry written in a
  consistent "What happened? / What to do?" form that names the exact field, enum value or
  endpoint that changed and the action a client must take. The Traffic API register was last
  updated 2026-08-21. There is no changelog for the Fantasy Sports API.
scheme: dated-entries-by-api
current_version: null
current_version_note: >-
  The DSP Traffic API carries no version identifier; the release-note date is the only version
  handle a client has.
last_updated: '2026-08-21'
entries:
  - date: '2026-08-12'
    api: Yahoo DSP Traffic API
    type: change
    breaking: false
    title: IAS Context Control Targeting and Avoidance
    highlight: >-
      IAS Context Control split into two taxonomies, Targeting and Avoidance, usable together in
      one line with AND logic. New contextual product taxonomy type value
      IAS_CONTEXT_CONTROL_TARGETING.
  - date: '2026-07-23'
    api: Yahoo DSP Traffic API
    type: addition
    breaking: false
    title: Frequency Groups in Traffic API
    highlight: >-
      Advertiser responses now expose frequencyGroupEnabled and frequencyGroupList; clients can
      assign frequencyGroupIndex on campaign, package and line frequency caps. Additive.
  - date: '2026-06-01'
    api: Yahoo DSP Traffic API
    type: change
    breaking: true
    title: DMA targeting endpoints migrated to Market Area
    highlight: >-
      Market Area support migrated across six endpoints. Line targeting and bid multipliers now
      take geoFormat=market_area.
  - date: '2026-05-19'
    api: Yahoo DSP Traffic API
    type: addition
    breaking: false
    title: Audit logs at campaign, package and line level
    highlight: The auditlog endpoint now returns logs at campaign, package and line granularity.
  - date: '2026-04-18'
    api: Yahoo DSP Traffic API
    type: removal
    breaking: true
    title: Audiences history endpoint deprecated
    highlight: The Audiences history endpoint was removed.
  - date: '2026-04-14'
    api: Yahoo DSP Traffic API
    type: addition
    breaking: false
    title: Congressional district targeting and bid multipliers
    highlight: >-
      Congressional district targeting types and CONGRESSIONAL_DISTRICT bid multipliers available
      to political seats.
  - date: '2026-03-23'
    api: Yahoo DSP Traffic API
    type: change
    breaking: true
    title: Country selection required for three audience types
    highlight: >-
      countryCodes is now required when creating or updating Search Keyword, Mail Domain and
      Purchase Receipt audiences. GET /traffic/audiences/countries returns supported ISO3 codes.
  - date: '2026-03-01'
    api: Yahoo DSP Traffic API
    type: removal
    breaking: true
    title: CPCC and completion-rate goals withdrawn
    highlight: >-
      CPCC goal, Completion Rate Threshold, MAXCTR, Maximize Completion Rate and the
      completionThreshold field are no longer supported.
  - date: '2025-10-13'
    api: Yahoo DSP Traffic API
    type: rename
    breaking: true
    title: videoAdPlacements renamed to videoAdPlcmts
    highlight: >-
      The videoAdPlacements parameter for Video_Placement_Type targeting was replaced by
      videoAdPlcmts.
  - date: '2025-09-01'
    api: Yahoo DSP Reporting API
    type: addition
    breaking: false
    title: Weighted conversions support
    highlight: Metric ID 747 (Weighted Conversions) and 748 (Weighted CPA) added.
  - date: '2025-08-25'
    api: Yahoo DSP Reporting API
    type: addition
    breaking: false
    title: Video Ad Placement (IAB)
    highlight: >-
      Dimension Type ID 1240 added to align with the latest IAB video placement guidelines.
entry_count: 11
window: 2025-08-25 through 2026-08-12 (recent window only; Yahoo archives prior years separately)
archive: https://help.yahooinc.com/dsp-api/docs/release-notes#2025
gaps:
  - The Yahoo Fantasy Sports API has no changelog, release notes or version history page.
  - >-
    Release notes are prose on a documentation host; there is no feed, no machine-readable
    changelog, and no version identifier a client can pin to.
maintainers:
  - FN: Kin Lane
    email: kin@apievangelist.com