What is claude-bridge?

Claude Bridge is a lightweight relay server that lets two or more instances of Claude Code, Anthropic's AI coding tool, communicate with each other in real time. The problem it solves is that when multiple Claude Code sessions are running (for example, on different servers or in different terminals), they have no built-in way to share messages, findings, or discovered artifacts without manual copy-paste between windows. This tool creates a shared message bus so they can coordinate automatically. The repository ships three separate programs. The first is bridge-server, a central HTTP relay that stores messages, findings, and presence information for all connected sessions. The second is bridge-mcp, a client that each Claude Code instance runs, it connects to the server and exposes a set of tools the AI model can call. The third is a human-facing bridge command-line tool that lets you send messages, check findings, and view channel activity from your own terminal without starting a Claude session. The system supports two deployment layouts: all instances on a single machine sharing a local server, or multiple servers connected over a private network. Persistence is optional: by default all state lives in memory and is lost on restart, but you can point it at a SQLite file (a lightweight, self-contained database format) to survive reboots. The project is written in Rust and ships statically compiled binaries, meaning they can be copied to other machines without installing extra dependencies. SQLite support is bundled directly into the binary. The full README is longer than what was provided.