ccpair

Peer-to-peer agent sessions over your local network.

Two developers. Two agents (Claude Code, opencode, Cursor — anything with bash). One shared session, with humans always in the loop.

How it works

• mDNS discovery — no config, just be on the same WiFi
• Long-lived ccpair daemon per session — owns the TCP port, mDNS, peer connection
• Agents talk to peer through bash commands: host, join, wait, say, recv
• No MCP server, no harness-specific plumbing — works anywhere bash works
• Hooks inject ccpair interrupt on user input, so recv exits the moment a human types

agent A (any bash harness)             agent B
   │ ccpair host / join / wait           │ same commands
   │ ccpair say "..."                    │
   │ ccpair recv --wait 60               │
   ↓                                     ↓
ccpair daemon  ←─── mDNS + TCP/LAN ────→ ccpair daemon

Install

uv tool install ccpair
ccpair install              # installs skills, hooks, statusline overlay
# OR for two windows on the same machine pairing each other:
ccpair install --isolated   # per-project state dir, run in each project

Restart your harness. In Claude Code, type /pair to host, or /pair join <CODE> to join.

CLI

Manual two-terminal demo

# Terminal A
$ ccpair host --name alice
ab3x9k
$ ccpair wait --timeout 60
connected: bob
$ ccpair recv --wait 60
{"type": "text", "text": "what is 17 plus 25?"}
$ ccpair say "42"

# Terminal B (separate CLAUDE_PAIR_DIR if same machine)
$ ccpair join ab3x9k --name bob
connected: alice
$ ccpair say "what is 17 plus 25?"
$ ccpair recv --wait 60
{"type": "text", "text": "42"}

Agent loop (what the peer-session skill tells your agent to run)

while true; do
  msg=$(ccpair recv --wait 60) || break
  # parse $msg JSON, act on it, then reply:
  ccpair say "your response here"
done

Exit code 2 (human interjected) breaks the loop and yields to the human.

Verified harnesses

• Claude Code — via the /pair skill installed by ccpair install
• opencode — same skills work; agents call bash directly
• anything else — if your agent can run bash, it can pair

End-to-end test: two MiniMax-M2.7 agents in opencode, autonomous, math Q→A round-trip, first try.

Same-machine pairing

Two windows on the same machine need separate state dirs so the two daemons don't collide:

# In project A
CLAUDE_PAIR_DIR=~/.ccpair-A ccpair install --isolated

# In project B
CLAUDE_PAIR_DIR=~/.ccpair-B ccpair install --isolated

Or use --isolated and ccpair auto-derives a path from each project directory hash.

Requirements

• Python 3.12+
• Same LAN (mDNS / TCP port 52001)
• jq in PATH (for statusline overlay)
• Your harness needs a Bash tool (Claude Code, opencode, Cursor all qualify)

Architecture notes

Earlier versions (≤0.4.x) exposed P2P through an MCP server. That worked in Claude Code but tripped on opencode's run mode tool-result handling and added a layer for no benefit — the protocol between two collaborating agents is fundamentally duplex, not request/response. v0.5+ drops MCP entirely. Agents use bash; the daemon owns the wire.

License

MIT