I’ve been running Claude Code and Codex on the same codebase for about 8 weeks now. Both open PRs on separate branches. Both pass CI individually. The worktree isolation works great for preventing textual conflicts. But I keep thinking about a different failure mode. What happens when one agent changes a function signature on its branch while another agent is still calling the old version on a different branch? Both branches pass CI. Git merges the text cleanly. Main breaks after merge because the call site doesn’t match the new signature. Worktrees prevent agents from stepping on each other in real time. But does anything check whether the finished branches are actually compatible with each other before you merge them? Curious how teams are handling this. CLAUDE.md scope rules? Manual review of every branch pair? Just merging and fixing whatever breaks? submitted by /u/godking55
Originally posted by u/godking55 on r/ClaudeCode