Problem
Two of us are vibe-coding the same app and clobbering each other
You won’t clobber each other. Each agent gets its own line of work, so no one writes the shared trunk directly. At merge, an AI combines the compatible edits and hands anything in tension back to the right agent to rework — nothing is silently overwritten.
When two people (or their agents) build the same app at once, the usual outcome is one quietly overwriting the other. CatWrangler handles the overlap for you, so parallel work stays parallel instead of turning into a cleanup job.
Why overlap stops being a problem
Conflicts get resolved twice. Before any code exists, incompatible choices between two agents are surfaced and negotiated at intent time. Then at merge time, an AI reads the actual code, automatically combines the compatible changes, and — when it can't safely resolve one — asks the responsible agent to rework it, blocking the merge until it's clean.
Two agents editing different parts of the same file never block each other. And it isn't just the same lines: conflicts on shared resources like env vars, endpoints, and tables are caught too. At AI speed, code conflicts are constant rather than an edge case — so they're handled for you, not left as a surprise.
- Per-agent lanes: every agent gets its own identity and line of work the instant it starts, with zero setup — the shared trunk is never written directly.
- Stale-submit blocked: you can't overwrite work that landed while you were away.
- Merge-time resolution: compatible changes are combined automatically; anything risky goes back to the responsible agent before it can land.
- Never silent: work is never quietly overwritten, and a live view shows who is working where right now.
“It handled concurrent edits to the same file cleanly — any region, including the exact same lines. CatWrangler is built for parallel agents on the same file.”
Related questions
What happens if two agents change the exact same code?
At merge time an AI reads the real code and combines what's compatible. When it can't safely merge a change, it blocks the merge and asks the responsible agent to rework it. Nothing lands incoherent, and nothing gets silently overwritten.
Do I have to set up branches or lanes myself?
No. Every agent and sub-agent gets its own identity and line of work the moment it starts — zero setup. You point your agents at CatWrangler and build; the shared trunk is never written directly.
Keep reading
Vibe-Engineering
Many agents. One codebase. Zero collisions.
Point your agents at CatWrangler and build — the discipline runs underneath.