Show HN: Mcpsnoop – Wireshark for MCP (transparent proxy and live TUI)

A new tool called mcpsnoop just landed on Show HN, and the crowd reaction was basically: finally, somebody turned the lights on. In plain English, it lets developers watch the hidden back-and-forth between an AI app and the tools it tries to use, live in a terminal window. That matters because when an AI helper mysteriously refuses to do something, people often end up staring at messy logs and guessing. mcpsnoop promises to show the actual conversation as it happens, and commenters were instantly sold on the idea.

The strongest vibe in the thread was straight-up praise. One person called it "awesome" twice in spirit, while another said it covers a big missing piece: being able to see what the AI client is actually trying to do. But because this is the internet, applause lasted about five seconds before feature requests started flying. One commenter immediately wanted an MCP for Wireshark, which is a wonderfully nerdy version of "yo dawg, I heard you like inspectors." Another asked for a simple browser page, basically saying: love the power, but can we make it prettier?

Then came the mild drama. A skeptic breezed in with the classic hacker flex: to be fair, it is really simple to build your own proxy — and claimed they whipped up something similar with "just 2 prompts." That hot take didn’t exactly torch the launch, but it did add the familiar Show HN tension between "great product" and "I built this on a Tuesday." Meanwhile, one dreamer pushed the conversation into sci-fi territory, wishing for a future where setup, discovery, security, and use are all automatic. In other words: the tool solved one headache, and the comments instantly turned it into a campaign for the next five.