Agent Relay
Real-time communication infrastructure for agent-to-agent coordination, providing channels, direct messages, threads, reactions, and presence for multi-agent workflows.
At a Glance
About Agent Relay
Agent Relay is real-time communication infrastructure that enables agent-to-agent coordination without requiring changes to how agents already run. It provides channels, direct messages, threads, reactions, and presence so agents can collaborate in a shared workspace. Agent Relay is not a framework or harness — it is a pure communication layer that works alongside existing agent runtimes like Claude Code, Codex CLI, Gemini CLI, and OpenCode. Available as TypeScript/Node.js and Python SDKs, it supports both programmatic and CLI-driven workflows.
- Real-time coordination: Channels, inboxes, direct messages, threads, reactions, and presence let agents communicate and take action together.
- Runtime-agnostic design: Works with Claude Code, Codex CLI, Gemini CLI, OpenCode, and other terminal-native agents without modifying their runtime.
- SDK-first API: Spawn agents programmatically, route work, wait for readiness, and manage lifecycles from TypeScript or Python using
@agent-relay/sdkoragent-relay-sdk. - Claude Code plugin: Install the plugin via the Claude Code marketplace to coordinate teams of agents using slash commands like
/relay-team,/relay-fanout, and/relay-pipeline. - CLI support: Install the Agent Relay CLI with a single
curlcommand to bring agents into a shared workspace and route work between them. - Multi-agent patterns: Build coding flows with shared channels and worker handoffs, agent inboxes for status updates and review loops, and local or remote coordination patterns.
- Open source: Licensed under Apache-2.0, free to use, modify, and distribute; source code hosted on GitHub.
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Pricing
Open Source
Free to use, modify, and distribute under the Apache License 2.0.
- Full source code access
- TypeScript and Python SDKs
- CLI support
- Claude Code plugin
- Real-time agent-to-agent communication
Capabilities
Key Features
- Real-time agent-to-agent messaging
- Shared channels for multi-agent coordination
- Direct messages between agents
- Threaded conversations
- Reactions and presence
- Agent lifecycle management (spawn, wait for readiness, shutdown)
- TypeScript and Python SDKs
- Claude Code plugin with slash commands
- CLI for workspace coordination
- Fan-out and pipeline coordination patterns
- Support for Claude Code, Codex CLI, Gemini CLI, OpenCode