Local dev server monitor for Mac.

See every running localhost port

Agents and humans both spin up dev servers, and they pile up. AgentPeek watches ports 3000-9999 for anything listening and lists them in the panel and menu bar, sorted by port. No more lsof guessing which process owns 3000 or whether last week's server is still running.

Labeled by runtime and project

Each server is tagged by its runtime so you know what it is at a glance: Node, Bun, Deno, Python, Ruby, Rust, or Go. Anything else shows its process name. Every row also shows the project folder, taken from the process working directory, so two servers on neighboring ports never blur together.

Open, copy, or stop in one click

Every server row gives you three direct actions:

That last one is the cleanup you reach for most: kill a stray dev server without digging up its PID.

Glanceable from notch or menu bar

The dev server list lives in the expanded notch panel and in the menu bar summary, right alongside token usage and active sessions. When an agent starts a server as part of a task, you see it appear without leaving your editor. Full reference in the docs.

Frequently asked questions