The Claude Code Monitor Tool is a built-in 📝Claude Code tool that lets the agent run a command in the background and receive each output line as it arrives. Rather than blocking a turn on a long-running process, 📝Claude writes a small watch script, runs it as a background stream, and interjects mid-conversation when a new event lands — tailing a log file, polling a PR or CI job, watching a directory for file changes, or tracking output from any long-running script. It inherits the Bash tool's permission model, so existing allow and deny rules apply, and it is unavailable on 📝Amazon Bedrock, 📝Google Vertex AI, and 📝Microsoft Foundry. Within the broader agentic-augmentation stack, Monitor fills the gap between one-shot shell calls and full background tasks, giving Claude a reactive channel for ambient signals without leaving the session.
