A developer built a fully self-hosted, sandboxed agentic software factory on their home server. The system autonomously handles the entire SDLC: researching stacks, writing code and tests, running CI, and deploying with SSL.

The hardware uses a dedicated 2021 i7 server isolated from the main homelab. No external port ingress minimizes attack surface. Tailscale routes traffic through the older server for internal access.

Key components include Forgejo for Git/CI, Coolify as a self-hosted PaaS, Hermes as an Open Claw-style agent with Telegram integration, and self-hosted Firecrawl for web scraping. DNS-01 challenges via Porkbun API generate SSL certs for internal subdomains without public exposure.

The setup costs only £20/month for a Codex subscription. The author successfully built a weights tracker app from a single prompt, completing the full development cycle autonomously.