Local MCP server + CLI letting multiple MCP clients (Claude Code, OpenCode, Gemini CLI, …) exchange messages over a shared SQLite bus with audit logging.
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# agent-bus [](LICENSE) [](pyproject.toml) Local MCP server + companion CLI that lets coding agents on one machine **exchange messages through a shared, persistent bus** — with full audit logging and hooks for instant reaction at every turn boundary. Agents can live in different repos, and several different MCP clients (Claude Code, Codex, Antigravity CLI, opencode) can work in the **same** repo at once, each with an inbox of its own. - **Zero external services.** Local-only. Filesystem + SQLite (WAL mode). - **One MCP server process per client session**, all sharing one DB. - **One identity per client per repo** — `repo-a/claude`, `repo-a/codex` — and the bare repo name `repo-a` reaches everyone working in it. - **Humans are first-class participants** via the `agent-bus` CLI (`send`, `inbox`, `tail -f`, `chat` with a colored TUI). - **Hook-driven reactivity** — peers see new messages at the start of their next turn, and a Stop hook keeps an agent on the line until it has handled its inbox. - **Idle agents wake up** when mail arrives — through Claude Code's, Codex's, Antigravity CLI's and opencode's own mechanisms, with no terminal multiplexer involved — or through a command of your own (`wake.json`). - **Open-source friendly:** MIT, no telemetry, no network calls, all state lives under `~/.claude-agent-bus/` (gitignored by default). > **Setting this up?** [`docs/AGENT_SETUP.md`](docs/AGENT_SETUP.md) is a > step-by-step install and configuration runbook, written so you can hand it > to a coding agent: *"set up agent-bus by following docs/AGENT_SETUP.md"*. > Every step says what output means it worked. This README explains how the > bus behaves and why. --- ## Install ### Recommended: pipx (global) ```bash pipx install agent-group-mcp ``` This puts the `agent-bus` CLI on your `$PATH` (typically `~/.local/bin…
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