Show HN: Janus – MCP that collects context from browser and terminal

Category: devtools

Tags: mcp, ai-assisted-development, browser-extension, cli-tool, session-capture

Score: 6.8/10 (Innovation: 7, Technical: 7, Documentation: 7, Utility: 6)

Janus is a Model Context Protocol (MCP) server that captures browser interactions and terminal output, piping real user session data into Claude Code so coding agents work from actual behavior rather than assumptions. It closes the feedback loop between product reality and development via a browser extension and CLI, which is a novel combination of observability and AI-assisted development.

Target audience: backend devs, frontend devs, AI agent developers

Repository: https://github.com/kmcheung12/janus · TypeScript

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