@AprilNEA: 🧵 I just reverse-engineered th...

🧵 I just reverse-engineered the binaries inside Claude Code's Firecracker MicroVM and found something wild:

Anthropic is building their own PaaS platform called "Antspace" (Ants + Space).

It's a full deployment pipeline — hidden in plain sight inside the environment-runner binary. Here's what I found 👇

1/ Claude Code runs inside a Firecracker MicroVM. PID 1 is /process_api — a custom init + WebSocket API server. ACPI tables are literally signed "FIRECK". No systemd, no sshd, nothing. Just a bare kernel + one binary.

2/ The real goldmine is /usr/local/bin/environment-runner — a 27MB Go binary, not stripped, with debug info. Built from github.com/anthropics/ant…. I extracted everything.

3/ Inside, there are TWO deploy targets: Vercel (public, well-known) and Antspace(completely undocumented, zero public mentions anywhere).

4/ Antspace has a full deployment protocol:

POST to create deployment
Upload dist.tar.gz via multipart/form-data
Stream NDJSON status: packaging → uploading → building → deploying → deployed
Own auth system (Bearer token + dynamic control plane URL)

5/ It powers "Baku" — Anthropic's internal codename for the web app builder on claude.ai. When you say "build me a web app," it spins up a Vite + React + TypeScript template with auto-provisioned Supabase DB and 6 MCP tools.

6/ The strategic play is clear:

Natural language → Claude builds app → Deploys to Antspace

Idea to production without ever leaving Anthropic's ecosystem. An AI-native PaaS with full vertical integration from model to runtime to hosting.

7/ This puts Anthropic in direct competition with Vercel, Netlify, Replit, Lovable, and Bolt — but with one advantage nobody else has: they own the entire stack from the LLM to the deployment platform.

All discovered via strace, objdump, and go tool objdump on a running Claude Code session. The binary was right there, unstripped, waiting to be read. 🔬

Wrote a blog post for this.
aprilnea.me/en/blog/revers…