AnalysisDevelopersSeptember 12, 2026

Reverse-engineering Claude Code Web's Firecracker MicroVM

A strace of PID 1 inside a Claude Code session revealed a Firecracker MicroVM (OEM ID FIRECK) with 4 vCPUs, 16GB RAM, 252GB disk and Linux 6.18.5. The unstripped Go binary exposed an undocumented Anthropic app-hosting platform, with no systemd, sshd or cron.

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