Until – You approve the plan, a separate agent checks the code against it

Until is a local, Git-backed workflow for coordinating builders and coding agents around an approved plan rather than a stream of code changes. The builder and an agent first define the intended outcome, approach, and exclusions. A teammate then reviews the plan and either approves it or sends it back with comments. Approval releases the work as jobs for agents to claim; agents record handoff notes and ask the builder to make decisions that require human judgment. After implementation, a separate agent compares the code with the approved plan and reports where they differ.

The central argument is that coding agents can work quickly, but human review and attention are limited. If agents make every decision, builders may lose understanding and control of the result. Putting decisions into the plan lets people retain their taste and judgment while delegating execution. Until is designed to work on the user’s machine inside their own repository, with no Until server, account, or telemetry, and it can be used with any agent able to run a command. Named examples include Claude Code, Cursor, Codex, Pi, Factory Droid, Amp, and OpenCode. The product is seeking a small group of builders to test it on real projects before launch.