modbender Fleet Communication Skill
Multi-agent communication system for OpenClaw fleets. Enables real-time messaging between multiple OpenClaw instances running on different machines.
When to use
- User asks agents to communicate with each other
- Multi-machine OpenClaw setups need coordination
- Task delegation between fleet nodes
- Broadcasting announcements to all nodes
Setup
The skill runs a lightweight HTTP message bus on the coordinator node (default port 18800).
Start the bus (on coordinator node)
node fleet-comm/fleet_bus.js
Environment
FLEET_NODE_ID— This node's ID (default:00)FLEET_BUS_URL— URL of the message bus (default:http://127.0.0.1:18800)FLEET_BUS_PORT— Port to run bus on (default:18800)
Commands
Send a message to a specific node
node fleet-comm/fleet_cli.js send <target_node> <message>
# Example: node fleet-comm/fleet_cli.js send 01 "start bounty scan"
Broadcast to all nodes
node fleet-comm/fleet_cli.js broadcast <message>
Read messages for this node
node fleet-comm/fleet_cli.js read
Check bus status
node fleet-comm/fleet_cli.js status
Architecture
00 (Mac Mini) 01 (WSL2) 02 (Windows)
┌──────────┐ ┌──────────┐ ┌──────────┐
│ Fleet Bus │◄────────│ CLI/Poll │ │ CLI/Poll │
│ :18800 │─────────►│ │ │ │
└──────────┘ └──────────┘ └──────────┘
▲ │
└─────────────────────────────────────────┘
Tailscale Network
Message Format
{
"from": "00",
"to": "01", // or "all" for broadcast
"msg": "message text",
"type": "task|info|alert|result",
"ts": 1234567890
}
Free vs Pro (future)
- Free: basic messaging, broadcast, status
- Pro: encrypted messages, web dashboard, task queue, auto-discovery, message persistence