bernstein

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"To achieve great things, two things are needed: a plan and not quite enough time." - Leonard Bernstein

deterministic multi-agent CLI orchestration

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Bernstein is a deterministic orchestrator for CLI coding agents (Claude Code, Codex, Gemini CLI, and 40+ more). Scheduling is plain Python - no LLM in the coordination loop - so runs are reproducible end to end. Every task runs in its own git worktree behind lint/type/test gates. Results stay checkable after the fact: an always-on lineage spine and replay journal, plus an opt-in HMAC-chained audit log (--audit) with receipts you can verify offline. Air-gap install profile included. Apache-2.0.

at a glance

Four things set it apart; everything after is detail.

• No LLM in the coordination loop. Scheduling is plain Python, so a run is reproducible end to end. Replay yesterday's plan and get yesterday's task graph.
• Checkable after the fact. The lineage spine and replay journal record every run; the opt-in audit chain adds receipts you verify offline. Non-determinism surfaces as a hash mismatch at the exact step, not a flaky re-run.
• Isolated by construction. Each task gets its own git worktree behind merge gates. No shared mutable state between agents.
• Broad and local. 40+ CLI agent adapters plus a generic --prompt wrapper, file-based state, no SaaS hop, no third-party data plane.

The full list is on the capabilities page; the feature matrix is the exhaustive index.

install in 30 seconds

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