Show HN: Watchtower – see every API call Claude Code and Codex CLI make (github.com)

Watchtower, a new tool for monitoring API calls made by AI coding agents, has been released, providing a real-time web dashboard for developers using Claude Code and Codex CLI. This tool functions similarly to the Network tab in Chrome DevTools, allowing users to inspect and debug numerous API interactions—such as streaming messages and token counts—that occur during AI coding sessions. By acting as a proxy between the AI agent and its API, Watchtower captures every request and response in detail, including decoding System prompts and showcasing token usage in an organized dashboard. This innovation is significant for the AI/ML community as it addresses the previously opaque process of monitoring API interactions, facilitating enhanced debugging, optimization of performance, and better resource management. With features like live tracking of agent hierarchies, rate limits, and full interaction history logged in JSON format, Watchtower empowers developers to gain deeper insights into how their AI projects operate. Additionally, the tool's future roadmap includes plans for cost tracking, request replay, and enhanced visualization features, making it a promising resource for those looking to optimize their AI coding workflows.