Debugging

What is mcpsnoop? — Wireshark for MCP mcpsnoop is an open-source transparent proxy for the Model Context Protocol (MCP) that sits between your MCP client and server, capturing every JSON-RPC frame in real time. Built in Go with a Bubble Tea terminal UI, it gives developers the same kind of deep packet inspection for MCP traffic that Wireshark provides for network packets. Launched in late June 2026, mcpsnoop reached 270 GitHub stars in just three weeks and is rapidly becoming the go-to tool for MCP debugging. ...

AI coding agents ship code faster than ever, but when they break, the debugging experience is nothing like a traditional stack trace. You don’t get a line number and a segfault — you get a silent hang, a garbled terminal, a 529 from the API, or an MCP server that just won’t connect. After spending the last year running Claude Code, Codex CLI, GitHub MCP Server, and Playwright MCP in production pipelines, I’ve collected the debug patterns that actually work. Here’s the field guide I wish I’d had. ...