always-further/nono: Kernel-Enforced Agent Sandbox by Sigstore Creator — OS-Level Isolation for Coding Agents

GitHub·medium signal

Nono wraps AI coding agents in kernel-level sandboxes using Landlock (Linux 5.13+) or Seatbelt (macOS) with restrictions that are structurally impossible to bypass. Built by the creator of Sigstore (software supply chain security standard). Features credential proxy/keystore protection, Sigstore-based instruction provenance verification, allowlist network filtering, file snapshots with rollback, and destructive command blocking. Ships with profiles for Claude Code, Codex, OpenCode, and OpenClaw. 1.6K stars, early alpha.