concurrent.cd
Tool / A supervising "Watcher" thread over all other agent threads (Claude, Codex, Grok, OpenCode, Devin and others, local or remote): it splits a described task into threads with one PR each, follows up on threads that go quiet, passes questions and permission requests up to the human without ever answering them, and merges each PR in turn only after its checks pass, setting CI priority when threads share a project. Ships in the "Owl" preview build.

Sotto Watcher

Free, MIT-licensed desktop app for running coding agents across providers; its Watcher thread splits work into one-PR threads, nudges idle ones, escalates questions to you and merges PRs in turn on green checks.

The summary describes what the project says it does; inclusion is not an endorsement.

Take

The merge queue is familiar (see Aviator, mergetrain, Mergify). What stands out is the human gate: the supervisor never answers questions or permission requests itself, it only passes them up, which keeps a model from deciding on someone's behalf. Very early: one developer (Zach, @ZryMiller), v0.1.41, and only the author's own claims so far. Code at https://github.com/millZach/Sotto. The "notepad outside compaction" from Nix's recap appears on neither the site nor the launch post, so it's unconfirmed until checked in the repo. Track it, but don't cite it until someone outside the project reports using it.

AI-drafted