generated: '2026-09-05'
method: searched
source: >-
  Registry metadata endpoints queried unauthenticated on 2026-09-05 — registry.npmjs.org,
  pypi.org/pypi/<pkg>/json, rubygems.org/api/v1/gems/<pkg>.json, crates.io/api/v1/crates,
  proxy.golang.org — plus the project's own repository and links.json.
note: >-
  NO PACKAGE HERE IS FIRST-PARTY. Keep a Changelog publishes a specification, not
  software: the project states plainly in its own AGENTS.md that "we do not create or
  endorse specific tools", and the 2.0.0 release REMOVED the one tool reference the spec
  used to carry (the Vandamme gem). Every entry below is a third-party implementation of
  the format, recorded for currency evidence only. official is false on all of them, and
  no SDKs pointer is wired into apis.yml, because there is no first-party client library
  to point at.
official_package_count: 0
package_count: 6

packages:
  - name: keep-a-changelog
    registry: npm
    url: https://www.npmjs.com/package/keep-a-changelog
    repository: https://github.com/oscarotero/keep-a-changelog
    author: Oscar Otero
    official: false
    language: javascript
    role: parser + writer + CLI for Keep a Changelog files
    version: 3.1.0
    published: '2026-08-03'
    note: The most actively maintained implementation found; released one month before this probe.

  - name: changelog-parser
    registry: npm
    url: https://www.npmjs.com/package/changelog-parser
    repository: https://github.com/ungoldman/changelog-parser
    author: Nate Goldman
    official: false
    language: javascript
    role: parses a Keep a Changelog-style markdown changelog into JSON
    version: 4.1.0
    published: '2026-06-17'

  - name: keepachangelog
    registry: pypi
    url: https://pypi.org/project/keepachangelog/
    repository: https://github.com/Colin-b/keepachangelog
    author: Colin Bounouar
    official: false
    language: python
    role: parse and update a Keep a Changelog file; release helper
    version: 2.0.0
    published: '2024-06-14'

  - name: keep-a-changelog
    registry: crates.io
    url: https://crates.io/crates/keep-a-changelog
    repository: https://github.com/napalmpapalam/keep-a-changelog-rs
    official: false
    language: rust
    role: Rust parser/serializer for the format
    version: 0.1.4
    published: '2024-07-10'

  - name: keepachangelog
    registry: rubygems
    url: https://rubygems.org/gems/keepachangelog
    author: Basalt AB
    official: false
    language: ruby
    role: parses keepachangelog.com-style changelogs and dumps them to JSON or YAML
    version: 0.6.1
    published: '2018-03-06'
    note: >-
      Last released 2018 — more than seven years before this probe and two spec revisions
      behind (1.1.0 in 2019, 2.0.0 in 2026). Treat as unmaintained.

  - name: github.com/anton-yurchenko/go-changelog
    registry: go
    url: https://pkg.go.dev/github.com/anton-yurchenko/go-changelog
    repository: https://github.com/anton-yurchenko/go-changelog
    official: false
    language: go
    role: Go parser for Keep a Changelog files
    version: v1.1.0
    published: '2023-07-09'

retired:
  - name: vandamme
    registry: rubygems
    url: https://rubygems.org/gems/vandamme
    repository: https://github.com/tech-angels/vandamme/
    author: Philippe Lafoucrière
    official: false
    language: ruby
    version: 0.0.12
    published: '2017-03-30'
    note: >-
      Was named on the spec page through 1.1.x and explicitly REMOVED in 2.0.0
      ("Outdated specifics (the Vandamme gem reference ...) in favor of more general
      guidance"). Last release 2017-03-30. Listed here only to record that the reference
      was retired, not that the tool is recommended.

currency_finding: >-
  Of six current implementations, two shipped within the last three months and three have
  not been released since 2024 or earlier; none has been updated to reflect the 2.0.0
  guidance revision of 2026-06-07. Because the 2.0.0 release explicitly did NOT change
  the format — the six change types, the date format, Unreleased and [YANKED] are all
  unchanged — an older parser is not necessarily broken, which is the one case in this
  catalog where a stale package date is not by itself an abandonment signal.