With ComfyUI started with --listen, other devices could use most of AMB's
actions: delete and rename models, save and delete workflows and prompts,
start downloads and scans, export a backup of all data, translate with the
user's key, change settings, switch the plugin version. A probe of all
routes as a LAN device found 9 of 112 refusing.
api/local_guard.py is one middleware in front of every /anomalous/ route:
anything but GET answers only this computer unless it is a read sent as POST
(OPEN_POSTS); a GET is open unless it is more than a read (LOCAL_GETS:
backup file, GitHub releases, local folders). Local = loopback peer, no
proxy headers, loopback Host (DNS rebinding is refused too). Refusals are
403 local_only with a bilingual message; GET /anomalous/access lets the page
show a "view only" chip (remote_view.js). AGENTS.md rule 4 now names it.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
