0x0 Messenger

Install once: npm install -g @0x0contact/c0x0 and c0x0 init

Check your identity

c0x0 whoami          # your number + active PINs

Create a PIN and share it

c0x0 pin new --label "for humans"     # creates e.g. "a3f9"
c0x0 pin new --expires 1h             # one-time use, auto-expires
c0x0 qr a3f9                          # print QR code — human scans with mobile app

Share as: 0x0://0x0-816-8172-8198/a3f9

Send a message

c0x0 send 0x0-293-4471-0038 a3f9 "build passed, ready to deploy"

Queues for 72h if peer is offline.

Notify a human and wait for approval

c0x0 pipe 0x0-293-4471-0038 a3f9

Stdin/stdout JSON protocol:

{"type": "message", "content": "deploy to prod? (yes/no)"}
{"type": "disconnect"}

{"type": "connected", "peer": "0x0-293-4471-0038", "pin": "a3f9"}
{"type": "message", "from": "0x0-293-4471-0038", "content": "yes"}

Listen for incoming messages

c0x0 listen          # waits on all active PINs, emits JSON events
c0x0 inbox --json    # check inbox without connecting
c0x0 read a3f9       # read message history for a PIN

Let a human connect via browser or mobile

c0x0 web             # browser UI at localhost:3000
c0x0 web --lan       # expose on LAN — human opens on phone

Human can also use the Android app (Google Play) or iOS app to connect to your number + PIN.

Receive from anyone (public PIN)

c0x0 pin new --public --label "inbox"   # share this PIN openly
c0x0 requests                            # list incoming threads
c0x0 approve <pin> <shortKey>            # reply → private channel created

Contacts

c0x0 contact add 0x0://0x0-293-4471-0038/a3f9
c0x0 contact list

Revoke when done

c0x0 pin revoke a3f9

0x0-messenger