Deterministic orchestrator for CLI coding agents (Claude Code, Codex, Gemini CLI, +40 more). No model in the coordination loop, so parallel runs in per-task git worktrees replay byte-identically. Signed lineage plus an HMAC audit chain.
Bernstein is an open-source deterministic orchestrator designed specifically for CLI coding agents. It enables developers to run multiple AI coding agents—including Claude Code, Codex, and Gemini CLI—simultaneously across parallel git worktrees. By keeping AI models out of the coordination loop, Bernstein ensures that all runs are byte-identical and reproducible. This allows code reviewers to verify outputs by examining execution records offline without needing to rerun the agents. The tool is targeted at development teams and individual engineers who need reliable, auditable automation for code generation and refactoring tasks where deterministic behavior and reviewability are critical.
