generated: '2026-09-10'
method: searched
source: https://www.fs.usda.gov/rds/archive/webservice/
note: >-
  The Forest Service publishes exactly one dated, versioned API changelog, and it belongs to the
  Research Data Archive web service: a "Releases" table on the service's own landing page listing
  five releases from 2014-12-18 to 2019-08-02 with per-release notes naming the endpoints and
  parameters that changed. Nothing comparable exists for the FIADB-API (which states a bare
  "Version 2.0" and a database version in each response citation) or for the two ArcGIS servers
  (which report an Esri product version, not an agency release). The archive changelog has not
  moved since 2019; that is a finding about currency, not a gap in our search.
scheme: sequential major.minor.patch, undated between releases
current_version: v2
current_version_date: '2019-08-02'
latest_entry_age_note: >-
  No release recorded in the seven years to 2026-09-10, while the underlying API remains live and
  answering (probed 2026-09-10).
covers:
  api: Forest Service Research Data Archive Web Service
  base_url: https://www.fs.usda.gov/rds/archive/webservice
entries:
  - version: v2
    date: '2019-08-02'
    breaking: false
    highlights:
      - Archive site overhaul onto a new back-end database; web services stated to behave exactly as before.
      - >-
        OAI-PMH web services made available at
        https://www.fs.usda.gov/rds/archive/webservice/oaipmh and brought up to date (previously
        carried data only through March 2016).
    additions:
      - OAI-PMH 2.0 endpoint
  - version: v1.2.1
    date: '2016-03-24'
    breaking: false
    highlights:
      - Organizations API — fixed a bug that matched names with incorrect acronyms.
  - version: v1.2
    date: '2015-12-15'
    breaking: false
    highlights:
      - New /efrs API listing the Experimental Forests and Ranges with products in the archive.
      - Search API gained an `efr` filter accepting values from /efrs.
      - Search and Product APIs gained a `geo` [latitude,longitude] element under <coordinates>.
    additions:
      - /efrs
      - search.efr
      - search.geo
      - product.geo
  - version: v1.1
    date: '2015-01-08'
    breaking: false
    highlights:
      - Search API gained funder `acronym` under <funder>; the `funder` filter now accepts full name or acronym.
      - Product API gained latitude/longitude box coordinates under <coordinates> and funder acronym.
      - Organizations API gained `acronym`.
  - version: v1.0
    date: '2014-12-18'
    breaking: false
    highlights:
      - Initial deployment.
other_surfaces_without_a_changelog:
  - api: FIADB-API / EVALIDator
    version_signal: >-
      "FIADB-API web-application Version 2.0" and database version FIADB_1.9.5.00, both emitted in
      the citation string of every JSON response (observed 2026-09-10). No dated release notes.
    evidence: https://apps.fs.usda.gov/fiadb-api/fullreport?rselected=Land%20Use%20-%20Major&cselected=Land%20use&snum=79&wc=102020&outputFormat=NJSON
  - api: FSGeodata ArcGIS REST services (arcx and fsgisx01)
    version_signal: >-
      currentVersion 11.5 — the Esri ArcGIS Server product version, not a Forest Service release
      number. Individual services carry a numeric suffix (_01, _02) that acts as an informal
      version; EDW_BasicOwnership publishes both _01 and _02.
    evidence: https://apps.fs.usda.gov/arcx/rest/services?f=json