generated: '2026-08-13'
method: searched
source: https://api-docs.zoominfo.com (Release Notes section of the published ZoomInfo Enterprise API collection)
provider: ZoomInfo
providerId: zoominfo
description: >-
  ZoomInfo's dated API release notes. The only dated, per-change changelog ZoomInfo publishes belongs to
  the LEGACY Enterprise API and has not been updated since September 2023. The current GTM API documents
  per-page updatedAt timestamps but ships no dated changelog.

surfaces:
  - id: legacy-enterprise-api
    name: ZoomInfo Enterprise API (legacy)
    changelog_url: https://api-docs.zoominfo.com
    scheme: dated-entries
    entry_count: 49
    first_entry: '2021-02-22'
    latest_entry: '2023-09-18'
    stale: true
    stale_note: >-
      No entry in almost three years. The same documentation now opens with a notice that this API is
      being deprecated, so the silence is consistent with the deprecation rather than with neglect.
  - id: gtm-api
    name: ZoomInfo GTM API (current)
    changelog_url: null
    scheme: per-page-updatedAt
    stale: false
    note: >-
      No dated changelog is published for the current API. Each documentation page carries an updatedAt
      timestamp in its markdown frontmatter (the API Conventions, Rate Limits, Status Codes and OAuth
      Scopes pages were all last updated between 2026-07-21 and 2026-07-27), and the OpenAPI
      specifications page states the spec is automatically updated as new APIs are released. Version
      drift is therefore observable only by diffing the six published specs.
    specs: https://docs.zoominfo.com/openapi.md

current_version: '1.0'

entries:
  - date: '2023-09-18'
    api: WebSights API
    type: addition
    breaking: false
    highlights:
      - Added a confidenceScore output field indicating the certainty of an IP matching a domain (0.00-1.00, matches below 0.3 hidden by default).
  - date: '2023-08-15'
    api: Contact Search API
    type: addition
    breaking: false
    highlights:
      - "requiredFields now accepts directPhone, so searches can be restricted to contacts that have a direct phone number."
  - date: '2023-06-19'
    api: Monitoring API
    type: addition
    breaking: false
    highlights:
      - Webhook payloads now carry changedAttributes indicating which contact or company fields changed.
  - date: '2023-03-16'
    api: Bulk API
    type: fix
    breaking: false
    highlights:
      - Fixed sortBy failing on Bulk Contact Search.
  - date: '2023-03-14'
    api: Documentation
    type: reorganization
    breaking: false
    highlights:
      - Bundles restructured — Bulk APIs and the Monitoring/Webhooks API moved exclusively under Scaling APIs; Standard APIs remain the realtime Search and Enrich endpoints.
  - date: '2023-02-14'
    api: Company Enrich API
    type: deprecation
    breaking: false
    highlights:
      - alexaRank deprecated.
      - New domainRank field introduced, powered by SimilarWeb; lower is better.
  - date: '2023-02-01'
    api: Bulk API
    type: improvement
    breaking: false
    highlights:
      - Performance improvements for large data sets.
  - date: '2023-01-19'
    api: Company Location Enrich API
    type: addition
    breaking: false
    highlights:
      - Added locationEmployeeCount and locationName output fields.
  - date: '2022-12-05'
    api: Contact Search API
    type: addition
    breaking: false
    highlights:
      - "sortBy now accepts contactAccuracyScore (descending by default)."
      - Phone-number searches tolerate special characters; alphabetic characters remain rejected.
      - Fixed bad responses for locationSearchType PersonANDHQ.
  - date: '2022-11-22'
    api: WebSights API
    type: improvement
    breaking: false
    highlights:
      - Matching logic now filters out matches below the quality Confidence Score, improving company matches and ISP fallbacks.
  - date: '2022-09-21'
    api: Enterprise API
    type: addition
    breaking: false
    highlights:
      - Added yearsOfExperience as an output for Contact Enrich and Bulk Contact Enrich.
      - Fixed UK postal codes not being supported.
      - Cross-API performance improvements.

window_note: >-
  Recent-window extract. The published notes run back to 2021-02-22; only the eleven most recent dated
  entries are captured here.