Many agents. One codebase.
Sam runs parallel AI agents’ branches together in a sandbox and tells you what breaks before you merge.
Git compares lines,not intent.
Two agents change different files. The merge is clean, the checks pass, and the build breaks anyway.
The conflicts that hurt never show a conflict marker.
A changed return type. A renamed field. An assumption that moved. Nothing overlaps, so nothing warns you.
Sam runs the merge before you do.
Every branch’s tests pass alone. Sam builds the merged tree in a sandbox and runs them again. The test that fails only there is the conflict.
It breaks here. Not in main.
How Sam catches a conflict git misses
Three agents, three branches.
Each agent works in its own branch, and each branch passes its own tests.
Git sees nothing to stop.
No two branches touch the same lines, so every merge check comes back clean.
Sam runs the pair together.
In a sandbox, each branch’s tests run alone, then again on the merged tree. agent/rate-limits passes by itself and fails in the union: agent/session-refactor let the session lookup come back empty for expired sessions, and the rate limiter still reads the user id off it.
What breaks, and what to merge first.
Sam reports the failing pair with its severity and returns non-zero, so nothing lands by accident. The suggested order puts agent/checkout-v2 and agent/session-refactor in now, and holds agent/rate-limits until it handles the empty case.
Let every agent run. Merge only what agrees.
Sam is in private development. Join the waitlist for early access to samctl.
You’re on the list.
We’ll write to when your invite to samctl is ready.