{"repo":"AprilNEA/reverse-engineering-claude-code-antspace","free":true,"listed":false,"github":"https://github.com/AprilNEA/reverse-engineering-claude-code-antspace","clone":"git clone https://github.com/AprilNEA/reverse-engineering-claude-code-antspace.git","description":"Anthropic's Hidden Vercel Competitor \"Antspace\"","language":"C","stars":29,"topics":["anthropic","claude","claude-ai","claude-code","antspace"],"license":null,"category":"security-tools","readme_excerpt":"Claude Code Sandbox Reverse Engineering Reverse engineering of Anthropic's Claude Code sandbox environment — Firecracker microVM internals, process supervisor, wire protocols, and deployment targets. Findings - Full binary analysis of /opt/env-runner/environment-manager - Extracted all BYOC details including embedded scripts, config structs, API endpoints - Extracted embedded settings JSON and stop hook scripts from binary - Deep analysis of Vercel deployment target — API endpoints, flow, auth, comparison with Antspace - Deep analysis of Antspace — Anthropic's internal deploy platform, protocol, build flow - Deep analysis of Baku — Anthropic's internal web app builder environment, full startup flow, Supabase MCP server, skills system, stop hook - Recovered process api binary from /proc/1/exe (PID 1 Firecracker init/supervisor, 3.1MB Rust/tokio) - Full Ghidra decompilation of process api — 3599 functions, 446K lines of C pseudocode - Source modules: firecracker init, control server, cgroup, oom killer, proc handle, state, adopter, pid tree, io, platform/unix - Key features: WebSocket API on port 2024, process spawning/lifecycle, cgroup management, OOM killer, mount/pivot root init, control HTTP server - Reverse-engineered complete wire protocol for process api - WebSocket protocol: JWT auth - ProcessConnection JSON - CreateProcess, stdin/stdout/stderr binary framing, SendSignal, Resize, Detach, KeepAlive - HTTP control API: /status, /fs sync, /shutdown, /auth public key, /moun","default_branch":null,"files":null,"tree":[],"storefront":"/r/AprilNEA","claimed":false,"request_supported":{"post":"https://gitbuyer.com/r/AprilNEA/reverse-engineering-claude-code-antspace/request-supported","requests":0},"note":"indexed from public GitHub; nothing is for sale on this page. Clone it from GitHub. Paid listings live at /search."}