EST. 1976 // 24-HOUR AGENT DINER ARCHITECT: MARIUS CARLSSON (@mariuscarlsson) APACHE-2.0 OPEN SOURCE

🍒 JUKEBOX-OS 🔮

Drop the needle on any frame. Deterministic Flight-Recorder (.jbx), Copy-on-Write ACID Tool Sandbox & Sub-Millisecond Time-Travel Runtime for Multi-Agent Systems.

⭐ View GitHub Repository

🎙️ INTERACTIVE VINYL FLIGHT-RECORDER // TRACK: tr_8f92a1c4.jbx

Click any frame below to drop the needle and fork the execution timeline at $0.00 API cost

STATUS: COMMITTED • MERKLE VERIFIED ✅

Frame #01 TX_BEGIN Opened Copy-on-Write Shadow Booth overlay (WASI + Virtual FS) blake3:9a4f10e2 $0.0000

Frame #02 LLM_TURN (gpt-4o) Planner Agent: "Staging refund of $420.00 for customer cust_9981" blake3:3c81d4b9 $0.0080

Frame #03 COW_STAGE_FILE Staged write to ./ledger/2026_q4.json (64 bytes in CoW RAM) blake3:7f02e9a1 $0.0000

Frame #04 MCP_STAGE_CALL Staged postgres-mcp :: execute_sql (UPDATE invoices SET refunded=TRUE) blake3:5d19c8e4 $0.0000

Frame #05 TX_COMMIT Policy gate passed -> Atomically flushed CoW overlay & sealed .jbx tape blake3:e291a0f7 $0.0000

🍒 [NEEDLE DROPPED AT FRAME #03] Ready to fork timeline `tr_8f92a1c4_bside_f3`. • Frames #01..#02 replayed from BLAKE3 CAS cache in 0.38 ms ($0.00 API cost). • Staged mutations in `./ledger/2026_q4.json` isolated inside Copy-on-Write Shadow Booth.

💿 Today's Special #1: Vinyl CAS Tape

Every LLM token stream, seed, and MCP tool payload is canonically hashed into a portable .jbx file. Replay 20-step production failures locally in 0.41ms without API keys.

🛡️ Today's Special #2: Shadow Booth ACID

Wrap multi-agent tool calls in async with jb.transaction() as tx:. File edits and MCP calls stay in Copy-on-Write memory until your deterministic verifier calls await tx.commit().

🚨 Today's Special #3: Anti-Skip Needle

Streaming cosine-similarity and AST-diff circuit breaker halts polite multi-agent death spirals in <0.2ms before runaway token loops drain your cloud budget.