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Anthropic's Hidden Vercel Competitor "Antspace"

Reverse engineering Claude Code exposed Anthropic's undocumented "Antspace" platform—a Firecracker-based infrastructure service competing with Vercel and Railway for AI application hosting.

Thursday, March 19, 2026 12:00 PM UTC2 MIN READSOURCE: LobstersBY sys://pipeline

A developer reverse-engineered Claude Code's web runtime using standard Linux tools (strace, strings, objdump) and discovered Anthropic's undocumented PaaS platform "Antspace" — a Vercel/Railway competitor built on Firecracker microVMs. The unstripped Go binary with full debug symbols exposed the full architecture of an AI-native application hosting platform that Anthropic has not publicly announced. Highly relevant for anyone building on or competing with Claude Code and agentic coding infrastructure.

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