Branch Prior to Claude Usage

[bootrom]

Is version 3.8 prior to the introduction of Claude code commits?

[tharittapol]

Yes. I went through the tags: none of the 3.8.x releases (3.8.0 to 3.8.8) has a commit that mentions Claude, and there's no CLAUDE.md on the v3.8 branch.

3.8.8 was tagged in June 2026, after Claude-assisted commits had started on master, but all it adds over 3.8.7 is a C++17 requirement and the release prep. None of those commits mention Claude either.

On master, CLAUDE.md came in with #1053 on 9 Jan 2026, and the first commit with a Co-authored-by: Claude trailer (ded9027) landed the same day. If you want the v4 API, 4.8.3 (30 Dec 2025) is the last release before that. 4.8.4 is the first one that has them.

To check it yourself:

git clone https://github.com/BehaviorTree/BehaviorTree.CPP.git
cd BehaviorTree.CPP
for t in 3.8.7 3.8.8 4.8.3 4.8.4; do
  echo "$t: $(git rev-list --count -i --grep=claude $t) commits mention Claude"
done

3.8.7: 0 commits mention Claude
3.8.8: 0 commits mention Claude
4.8.3: 0 commits mention Claude
4.8.4: 2 commits mention Claude

This only catches commits that say so in the message, plus the CLAUDE.md file. Git can't show AI help nobody credited. For what it's worth, the first commits from the Copilot coding agent are from February 2026, so 4.8.3 predates those too.

If you're on the ROS 2 binaries, behaviortree_cpp_v3 is 3.8.7 on Humble and 3.8.8 on Jazzy.