Show HN: Viewport – A clean local agent monitor

Category: devtools

Tags: cli-tool, ai-agents, developer-tools

Score: 7.0/10 (Innovation: 6, Technical: 7, Documentation: 8, Utility: 7)

Viewport is a local browser monitor for CLI coding agents that wraps agents like Claude and Codex, streaming their activity into a clean web UI with pause/kill controls, steering prompts, and after-action summaries. It combines terminal emulation, SSE event streaming, SQLite persistence, and agent auto-discovery into a practical tool for debugging and supervising AI coding sessions. Its thoughtful design around local-first operation and deep-linkable run timelines makes it a useful addition to the AI-assisted development workflow.

Target audience: backend devs, devops, ai engineers

Repository: https://github.com/Brumbelow/viewport · JavaScript · MIT

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