First cross-repo ask in three steps

# recommended: install with uv (fast, isolated)
uv tool install repowire

# or use the interactive installer (detects uv / pipx / pip)
curl -sSf https://raw.githubusercontent.com/prassanna-ravishankar/repowire/main/install.sh | sh

Requires tmux. The installer detects your agents (Claude Code, Codex, Gemini, OpenCode) and wires hooks and MCP for each one it finds.

repowire setup

One-time. Installs lifecycle hooks for every detected agent runtime and starts the local daemon on 127.0.0.1:8377.

# window 1
cd ~/projects/project-a && claude

# window 2
cd ~/projects/project-b && codex

Both sessions auto-register as peers. In project-a, ask:

The agent invokes the ask MCP tool with peer_name="project-b". project-b receives the question and acks back with ack(corr_id, "..."). The reply lands in project-a as a notification framed [ack #cid from @project-b].