generated: '2026-08-14'
method: searched
source: 'openapi/datavant-rest-api-openapi.yml#/tags (tag "Release Notes")'
docs: https://developer.datavant.com/docs
note: >-
  Datavant does not host a changelog page. It ships release notes INSIDE the OpenAPI
  document as a documentation-only tag called "Release Notes", which ReDoc renders as a
  section of the API reference at developer.datavant.com/docs. Entries are grouped by
  resource rather than by release and dated M/D/YY with no version number attached. The
  finding is decay: the newest entry captured is 2023-09-13, while info.version is still
  2023-04-01 - the published change history has not moved in roughly three years even
  though the API is live and serving.
scheme:
  style: date-stamped notes grouped by resource
  version_field: info.version
  current_version: '2023-04-01'
  version_header: version-datavant
  granularity: per-resource
  breaking_change_marking: none
  machine_readable: false
coverage:
  first_entry: '2023-04-19'
  last_entry: '2023-09-13'
  entry_count: 10
  days_since_last_entry_at_capture: 1066
entries:
  - date: '2023-09-13'
    area: Orders
    type: addition
    breaking: false
    highlight: Added `/{order_id}/validation/stats` for high-level validation stats for the given order.
  - date: '2023-08-22'
    area: Orders
    type: addition
    breaking: false
    highlight: Added manual QA and coding required configuration options to Orders.
  - date: '2023-08-21'
    area: Visits
    type: addition
    breaking: false
    highlight: Added `projects/{project_id}/queries/{query_id}/visits/{visit_uuid}` to return details for a specific visit.
  - date: '2023-08-21'
    area: Visits
    type: addition
    breaking: false
    highlight: Added `projects/{project_id}/queries/{query_id}/visits` to return all visits for a specific query.
  - date: '2023-06-16'
    area: Documents
    type: addition
    breaking: false
    highlight: Added indicator for when a chart has been downloaded.
  - date: '2023-05-18'
    area: Orders
    type: addition
    breaking: false
    highlight: Added `alternate_delivery` configuration to Orders.
  - date: '2023-05-12'
    area: Documents
    type: addition
    breaking: false
    highlight: Added `404 - Document does not exist` when Document not found.
  - date: '2023-05-11'
    area: Documents
    type: addition
    breaking: false
    highlight: Added `/documents` endpoint to list all documents associated with Order or Order Query.
  - date: '2023-04-27'
    area: Configuration
    type: addition
    breaking: false
    highlight: Added `configuration/supporting-documents/health-plan-letter` for managing Health Plan Letters.
  - date: '2023-04-19'
    area: Orders
    type: addition
    breaking: false
    highlight: Added `delivery_location` configuration to Orders.
related:
  cli_releases:
    note: >-
      The Datavant CLI (a separate product from the REST API) does publish version
      markers - v3.8, v4.1, v4.2, v4.3 and v5.2.0 are all referenced in public
      distribution and documentation - but there is no public dated CLI changelog either.
    detail: cli/datavant-cli.yml
gaps:
  - No standalone changelog URL; the notes are only reachable by rendering the OpenAPI.
  - No version numbers, no breaking-change flags, no RSS/Atom feed, no machine-readable feed.
  - Not updated since 2023-09-13 despite a live, in-production API.