Cairn

Open-source quality-assurance layer for AI coding agents — session continuity, file locks, cross-session handoff. Launching soon.

The problem

Run more than one coding agent and they collide: two sessions edit the same file, context is lost between runs, and a handoff means re-explaining everything. There's no shared memory or coordination layer underneath them.

The solution

Cairn is an open-source control plane for AI coding agents: advisory file locks to prevent collisions, durable session continuity, and structured cross-session handoff so any agent can pick up where another left off — without re-deriving context.

Why us

Cairn is extracted from the coordination layer we run across a real multi-agent fleet in production — the same locks and handoff protocol, hardened by daily use.