Claude Code Hook Comms (HCOM)
A local message bus and event log that enables AI agents to communicate, observe, and spawn each other across terminals.
What is Claude Code Hook Comms (HCOM)?
hcom (hook-comms) is a multi-agent communication system that connects AI coding tools like Claude Code, Gemini CLI, Codex, and OpenCode. It allows these AI agents to coordinate workflows by messaging each other, observing each other's activities, and spawning new instances, all through a unified local interface. It solves the problem of isolated AI agents by enabling them to collaborate, share context, and automate multi-agent patterns.
Developers and researchers using AI coding assistants (Claude Code, Gemini CLI, Codex, OpenCode) who want to orchestrate multiple agents for complex tasks, collaborative debugging, or automated workflows. It's for users who need agents to communicate, share state, and work together without manual intervention.
Developers choose hcom because it provides a lightweight, local-first message bus that requires no modifications to the underlying AI tools, using hooks to automatically record and deliver events. Its unique selling point is the ability to seamlessly connect existing AI tools into a coordinated multi-agent system with features like cross-device relay, event subscriptions, and pre-built workflow scripts.
Overview
Let AI agents message, watch, and spawn each other across terminals. Claude Code, Gemini CLI, Codex, OpenCode
Use Cases
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