generated: '2026-08-22'
method: searched
source: https://github.com/HorizonRobotics/OE-Skills
summary: >-
  Horizon Robotics publishes no product changelog or release-notes page on its website or
  developer portal. The only dated, structured change history it makes public is inside
  the OE-Skills repository: nine per-skill CHANGELOG.md files with semver headings and
  UTC dates, plus the repository's own commit history. That is a real changelog surface,
  but it covers the agent skill packs only — not the Journey toolchains, the OpenExplorer
  releases, or the MCP server, none of which have a public change history.
scheme: semver per skill, dated headings (## [x.y.z] — YYYY-MM-DD)
current_version:
  oe_skills_pack: 0.2.0
  mcp_server: 3.9.0
changelog_locations:
- name: OE-Skills per-skill changelogs
  url: https://github.com/HorizonRobotics/OE-Skills
  count: 9
  files:
  - horizon/skills/hbdk/hbdk-manual/CHANGELOG.md
  - horizon/skills/hbdk/j6-hbdk-compile/CHANGELOG.md
  - horizon/skills/horizon_tc_ui/hb-analyzer-performance/CHANGELOG.md
  - horizon/skills/horizon_tc_ui/horizon-tc-ui/CHANGELOG.md
  - horizon/skills/ucp/CHANGELOG.md
  - horizon/skills/ucp/j6-ucp-hbm-infer/CHANGELOG.md
  - horizon/skills/ucp/j6-ucp-infer-generating/CHANGELOG.md
  - horizon/skills/ucp/j6-ucp-perfetto-trace-analysis/CHANGELOG.md
  - horizon/skills/ucp/j6-ucp-perfetto-trace-catcher/CHANGELOG.md
- name: OE Skill Hub release notes
  url: null
  access: 'internal tool only — the changelogs say release notes per version are readable via `oe-cli skill inspect <skill> --version <semver>`, which requires the OE CLI and Hub access'
  note: >-
    A machine-readable version registry exists behind `oe-cli`, but it is not reachable
    from the public web. The repository files are the public projection of it.
- name: GitHub releases
  url: https://github.com/HorizonRobotics/OE-Skills/releases
  count: 0
  note: The repository tags no releases; version history lives in the changelog files.
entries:
- component: j6-hbdk-compile
  version: 1.1.8
  date: '2026-06-11'
  breaking: false
  highlights:
  - Reworked the `remove_nodes` deletion strategy — Quantize/Dequantize/Cast now handled as one class, Reshape/Transpose split out as a layout class removed at the end of the flow.
  - Fixed post-convert operator type matching so a config string such as "Cast" no longer produces a spurious "node not found" and skip a deletion that should have happened.
  - Added `_normalize_op_types()` to `_remove_op_connected_to_io`, accepting a type list and filtering via `matches_remove_op_type()`.
- component: j6-hbdk-compile
  version: 1.1.7
  date: '2026-04-21'
  breaking: false
  highlights:
  - 'SKILL.md hardened: any model legality check failure must terminate the workflow immediately rather than continuing with `-c` or claiming a validation that did not happen.'
  - Added explicit hard gates and a list of prohibited agent behaviours.
- component: OE-Skills pack
  version: 0.2.0
  date: '2026-06-30'
  breaking: false
  highlights:
  - Version bump plus i18n (Chinese/English README) links.
  - Added nash-b (J6B / QNX) board support.
  - README enriched with MCP server configuration and skill reference tables.
- component: OE-Skills pack
  version: 0.1.0
  date: '2026-06-26'
  breaking: false
  highlights:
  - Initial public release of the Horizon AI toolchain skill packs for AI agents.
recent_activity:
  last_commit: '2026-07-01'
  note: >-
    Most recent push to OE-Skills was 2026-07-01 (documentation and diagram fixes). The
    MCP server it installs was live and answering at version 3.9.0 when probed on
    2026-08-22, so the running service is ahead of anything the repository documents.
gaps:
- No changelog for the OpenExplorer toolchain releases themselves (J3 1.16.6, J5 1.1.77, J6 3.0.31) — versions are visible in documentation paths but changes between them are not published.
- No changelog, release notes or version history for the Open Explorer MCP Server.
- No RSS/Atom feed for any change history.
x-evidence:
  fetched: '2026-08-22'
  urls:
  - {url: 'https://raw.githubusercontent.com/HorizonRobotics/OE-Skills/main/horizon/skills/hbdk/j6-hbdk-compile/CHANGELOG.md', status: 200}
  - {url: 'https://api.github.com/repos/HorizonRobotics/OE-Skills/releases', status: 200, finding: 'empty array'}
  - {url: 'https://api.github.com/repos/HorizonRobotics/OE-Skills/commits?per_page=10', status: 200}