What problem does it solve? When running multiple coding agents, a Codex App task needs a reliable way to know its own identity and exchange messages with other agents without guessing from environment variables or terminal state. This Skill routes all coordination through the session-bound AgentStack bridge so identity and messaging stay consistent. ## Core Features & Use Cases - Session-bound bootstrap: Call agentstack.bootstrap once with the current session_id (plus agent_id for subagents) to establish the authoritative identity for all later coordination calls. - Mail and file coordination: Fetch inbox messages, reserve files before editing, acknowledge or reply to delivered messages, and report verification results to the requesting agent. - Identity reporting: Use agentstack.runtime_status with no arguments when asked which agent the current task is, instead of inferring from AGENT_NAME, TMUX, or pane titles. - Use Case: A Codex subagent spawned via delegation bootstraps with its hook-provided agent_id, receives pending mail after a cold wake, reserves the files it will edit, and reports results back to its parent agent. ## Quick Start Ask the agent to coordinate this Codex App task through AgentStack by bootstrapping the current session and checking the inbox for pending messages.
