Add Hazmat to Sandboxing & Isolation#3
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dredozubov wants to merge 1 commit intobureado:mainfrom
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macOS-native runtime containment for AI agents and coding-agent workflows using isolated users, Seatbelt sandboxing, PF firewall controls, DNS blocklists, backup/rollback, and TLA+-checked design.
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Hazmat contains AI/coding agents on macOS. The agent runs under its own UID (not the operator's), under a Seatbelt policy applied via
sandbox_init()from a small privileged helper (notsandbox-exec), with PF anchors and DNS blocklists for per-session network policy, plus backup/rollback for reversible host setup.The design is checked in TLA+ across nine specs (~44,795 states): setup/rollback ordering, seatbelt credential-deny policy, backup safety, version migration, Tier 2/Tier 3 policy equivalence, session-time host permission repairs, harness lifecycle, and helper fd hygiene before
sandbox_init.Sits next to
capsemandai-jailon the macOS side.https://github.com/dredozubov/hazmat