Rosentic checks every PR against every other open PR before merge. When coding agents work in parallel, they break each other in ways no single-PR tool catches. Rosentic catches it. Deterministic analysis. Same scan, same result, every time. Most scans come back clean. That means you're clear to merge. Runs on your infrastructure. One YAML file, no signup, 60-second install.
Hey Product Hunt 👋. I'm Laramie. Nearly 20 years in tech. By day I run technical partnerships. By night I build with Claude Code and Codex on the same repo.
Here's what I kept running into: both agents write good code. Both PRs pass CI. Then they merge and break main. CI checks one branch at a time. Git merges text, not logic. Nobody checks whether the branches are compatible with each other.
With agent orchestration tools shipping weekly and PR volume exploding, this is only getting worse.
So I built Rosentic.
It checks every PR against every other active branch before merge. Deterministic. Same scan, same result, every time.
Most scans come back clean. That means you're clear to merge. When something fires, you catch it before production does.
150+ repos scanned. Real conflicts found and fixed by maintainers. One YAML file, no signup, 60-second install.
What's the messiest merge conflict you or your team has dealt with lately?
Congratulations on the launch, @bigl! Excited to try out Rosentic.
"Deterministic analysis" is the line that earns trust here — what's the actual technique? AST-level diff, type-graph reachability, an SMT solver, something else? Asking because "deterministic" in this space sometimes means "we wrap an LLM and average," and the value is very different depending on which one it is.
Nice work. Narrow but useful problem. Curious how you handle false positives when two PRs touch the same surface for legitimately different reasons (e.g. coordinated multi-agent refactors). That's been the trickiest part of PR-conflict detection in our orchestration work.
This is solving a problem that's about to hit every engineering team at scale. When I was CTO running 120 engineers, merge conflicts between humans were already one of our biggest velocity killers - now multiply that by AI agents working in parallel across the same codebase. The hard part isn't detecting the textual conflict - it's catching the semantic breaks where two agents make changes that individually pass tests but together introduce subtle regressions. Curious how you're handling that semantic layer versus pure git-level conflicts?
About Rosentic on Product Hunt
“Catch when coding agents break each other before merge”
Rosentic launched on Product Hunt on May 3rd, 2026 and earned 183 upvotes and 12 comments, placing #5 on the daily leaderboard. Rosentic checks every PR against every other open PR before merge. When coding agents work in parallel, they break each other in ways no single-PR tool catches. Rosentic catches it. Deterministic analysis. Same scan, same result, every time. Most scans come back clean. That means you're clear to merge. Runs on your infrastructure. One YAML file, no signup, 60-second install.
Rosentic was featured in Open Source (68.4k followers), Developer Tools (512.4k followers) and Artificial Intelligence (468.5k followers) on Product Hunt. Together, these topics include over 173.3k products, making this a competitive space to launch in.
Who hunted Rosentic?
Rosentic was hunted by fmerian. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Rosentic stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
fmerian
Hey Product Hunt 👋. I'm Laramie. Nearly 20 years in tech. By day I run technical partnerships. By night I build with Claude Code and Codex on the same repo.
Here's what I kept running into: both agents write good code. Both PRs pass CI. Then they merge and break main. CI checks one branch at a time. Git merges text, not logic. Nobody checks whether the branches are compatible with each other.
With agent orchestration tools shipping weekly and PR volume exploding, this is only getting worse.
So I built Rosentic.
It checks every PR against every other active branch before merge. Deterministic. Same scan, same result, every time.
Most scans come back clean. That means you're clear to merge. When something fires, you catch it before production does.
150+ repos scanned. Real conflicts found and fixed by maintainers. One YAML file, no signup, 60-second install.
What's the messiest merge conflict you or your team has dealt with lately?
https://github.com/marketplace/actions/rosentic-cross-branch-compatibility-check