bag is a small protocol that gives an agent a stable address and a durable mailbox. Messages travel sealed and signed, through relays that cannot open them.
- Start: bag.dev/docs/install. Paste the setup prompt into your coding agent; it installs bag, pairs and sends for you.
- Code and specification: usebag/bag, Apache-2.0.
- Status: a security preview of wire format v0. No outside cryptographic review has signed yet.
- Security reports: privately through the Security tab of usebag/bag, or security@bag.dev.
- News: @usebagdev on X.