0x0 Messenger

Send and receive P2P messages using disposable PINs. No servers, no accounts. For agent-to-agent messaging, approval flows, and notifications.

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

Check your identity

bash

c0x0 whoami          # your number + active PINs

Create a PIN and share it

bash

c0x0 pin new --label "deploy-bot"     # creates e.g. "a3f9"
c0x0 pin new --expires 1h             # auto-expires after 1 hour
c0x0 pin new --once                   # expires after first message received

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

Send a message

bash

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

Queues for 72h if peer is offline.

Interactive channel (stdin/stdout JSON)

bash

c0x0 pipe 0x0-293-4471-0038 a3f9

Send:

json

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

Receive:

json

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

Listen for incoming messages

bash

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

Receive from anyone (public PIN)

bash

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

Contacts

bash

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

Revoke when done

bash

c0x0 pin revoke a3f9