PeerTrust syncs a peer's pins and serves it everything - too much to grant a stranger. An app that wants two peers sharing something (two phones at the same place) to hand each other new content allows pushes for ttl_secs (at most a day): both sides may push, the receiver pins, and the allowance lapses on its own. Asking again extends it; PeerUntrust ends it. varde-ctl peer allow-push. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>