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🍒 J U K E B O X 🔮

The Deterministic Flight-Recorder, ACID Tool Sandbox & Time-Travel Runtime for Multi-Agent Systems

[ 🎙️ NOW PLAYING ON TRACK #01 ] Stop letting autonomous agents trash your production database and burn $400 in runaway loops. JUKEBOX records every LLM prompt, token stream, MCP tool call, and filesystem mutation onto a cryptographic vinyl tape (.jbx)—giving your agents BEGIN / COMMIT / ROLLBACK semantics and <1ms zero-cost time-travel replay.

🍽️ Today's Specials (Features) • 🥞 The Blue Plate Special (Quickstart) • 📋 A La Carte Menu (Architecture) • 🚗 Counter Service & Drive-Thru (CLI) • 🔥 Chef's Table (Benchmarks) • 🪙 Tipping the Cooks (Contributing)

Modern agent frameworks (LangGraph, AutoGen, CrewAI, OpenAI Agents SDK) are great at orchestrating prompts, but they treat side effects as fire-and-forget. When a 15-step agent workflow hallucinates on Step 12 after mutating three SQL tables and five local files on Step 8, "checkpointing the chat history" won't save you.

JUKEBOX (architected by Marius Carlsson) is a systems-level runtime written in Rust with Python bindings that brings database-grade ACID transactions and deterministic vinyl replay to any AI agent stack:

1. Slide Into a Booth (Installation)

git clone https://github.com/socrates6969/jukebox-os.git cd jukebox-os pip install -e .

2. Wrap Any Agent in a Transactional Vinyl Track

import asyncio from jukebox import Jukebox, SandboxPolicy, CircuitBreaker

jb = Jukebox( tape_dir="./tapes", sandbox=SandboxPolicy(filesystem="copy_on_write", mcp_mode="staged_acid"), breaker=CircuitBreaker(max_cost_usd=0.50, max_semantic_repeat=3), )

@jb.track(name="invoice-reconciliation-agent") async def run_accounting_agent(customer_id: str, amount_usd: float) -> dict: async with jb.transaction(tape_id="tr_8f92a1c4") as tx: tx.record_agent_turn( agent_name="planner", message=f"Staging refund of ${amount_usd} for {customer_id}", model="gpt-4o", cost_usd=0.008, ) tx.stage_file_write( path="./tapes/staged_ledger_demo.json", content=f'{{"customer": "{customer_id}", "refund_usd": {amount_usd}}}', )

if amount_usd > 500.0: await tx.rollback(reason="Refund exceeds $500 autonomous threshold") return {"status": "ROLLED_BACK", "tape_id": tx.tape_id}

await tx.commit() return {"status": "COMMITTED", "tape_id": tx.tape_id}

if name == "main": print(asyncio.run(run_accounting_agent("cust_9981", 420.00)))

3. Drop the Needle: Time-Travel Forking in Python

from jukebox import Tape

tape = Tape.load("./tapes/tr_8f92a1c4.jbx") b_side = tape.fork( at_frame=3, override_model="claude-3-7-sonnet-latest", override_system_prompt="You are a strict SQL auditor. Never issue DELETE without a WHERE clause.", ) print(b_side.replay_and_diff().to_markdown())

📋 A La Carte Menu (System Architecture)

+-----------------------------------------------------------------------------------+ | APPLICATION & ORCHESTRATION LAYER | | [ LangGraph ] [ CrewAI ] [ AutoGen ] [ OpenAI / Anthropic SDK ] | +-----------------------------------------+-----------------------------------------+ | @jukebox.track / MCP Proxy v +-----------------------------------------------------------------------------------+ | 🍒 JUKEBOX RUST CORE RUNTIME (libjukebox) 🔮 | | | | +-------------------------+ +-----------------------+ +---------------------+ | | | ANTI-SKIP NEEDLE | | BLAKE3 MERKLE CAS | | OTEL GEN_AI | | | | • Cosine Loop Breaker | | • Zero-Cost Replay | | EXPORTER | | | | • Token Budget Gate | | • .jbx Binary Tape | | • Spans & Metrics | | | +-------------------------+ +-----------------------+ +---------------------+ | | | | +-----------------------------------------------------------------------------+ | | | SHADOW BOOTH: TRANSACTIONAL WASI & CoW SANDBOX | | | | [ Virtual CoW Filesystem ] [ SQL Savepoint Proxy ] [ MCP Stage Gate ] | | | +--------------------------------------+--------------------------------------+ | +-----------------------------------------|-----------------------------------------+ | +--------------------+--------------------+ | | [ VERIFIER PASSES ] [ VERIFIER FAILS ] | | v v ( ATOMIC WORLD COMMIT ) ( INSTANT ZERO-RESIDUE ) Writes flushed to Disk/API ROLLBACK & ALERT

🚗 Counter Service & Drive-Thru (CLI & TUI)

List recent agent flight recordings in your local booth

$ jukebox ls --tape-dir ./tapes 🍒 JUKEBOX 24-HOUR FLIGHT RECORDER // LOCAL BOOTH TAPES 🔮

TRACK ID AGENT NAME FRAMES COST STATUS

tr_8f92a1c4 invoice-reconciliation-agent 5 $0.0080 COMMITTED

Replay & cryptographically verify a .jbx Merkle tape in <1ms

$ jukebox replay ./tapes/tr_8f92a1c4.jbx

🔥 Chef's Table / The Line (Benchmarks)

Metric Raw Framework (No Sandbox) Docker Container Per Run 🍒 JUKEBOX Runtime

Runtime Interception Overhead 0.00 ms (Baseline) +1,420.0 ms (Cold boot) +0.34 ms per frame

Replay Steps 1–15 (Time-Travel) 38,400 ms (Re-runs APIs) 39,800 ms (Re-runs APIs) 0.41 ms (93,000x faster)

API Cost on 10x Debug Replays $1.84 $1.84 $0.00 (100% CAS Hit)

Side-Effect Rollback Latency ❌ Impossible (Manual cleanup) 640 ms (Container teardown) 0.19 ms (CoW pointer drop)

Runaway Loop Detection ❌ Only after max_iterations ❌ Only after max_iterations 0.18 ms (Semantic AST trip)

🪙 Tipping the Cooks (Contributing & Community)

Fork the Repo & Pull Up a Stool: git clone https://github.com/socrates6969/jukebox-os.git cd jukebox-os pip install -e . pytest pytest -v

House Rules (Code of Conduct): Read our CODE_OF_CONDUCT.md and CONTRIBUTING.md.

░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░ ░ BUILT WITH CHROME, NEON & RUST BY MARIUS CARLSSON (@mariuscarlsson) ░ ░ "THANK YOU FOR DINING AT JUKEBOX — DRIVE SAFELY!" ░ ░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░

⭐ Star jukebox-os on GitHub • 🔮 Launch Live 24-Hr Diner Inspector