About PortNanny
PortNanny is an MCP server published by mukes555 in the Files category: macOS port manager: see every listening port, who started it, and stop it the right way. Menu bar app, Workbench, CLI, and an MCP server so AI agents never kill each other's servers. Formerly PortKilla.
The repository has 3 stars and 0 forks, with the last commit a month ago. Recent commit activity is the strongest signal that reported issues will get attention.
Install
From source
git clone https://github.com/mukes555/PortNannyThis server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.
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Releases
v2.4.2v2.4.2 · 16 Sep 2026What's new in v2.4.2 Notifications that know when to keep quiet, and a test harness that stops writing to the store of whoever is using the Mac. Fixed Notifications could arrive in a flood.** A watched port that an agent kept restarting…
v2.4.1v2.4.1 · 16 Sep 2026What's new in v2.4.1 The guard, findable. It was the app's own automation and the only way to reach it on a row was to know to right-click. Fixed The guard had no visible way in.** A row offered Kill, Watch and (in Advanced) Details;…
v2.4.0v2.4.0 · 16 Sep 2026What's new in v2.4.0 PortNanny opens on who is working now: an Agents tab beside Simple and Advanced, the AI tools on this Mac out of Settings and into it, and `portnanny agents` for the same answer in a terminal. Added An Agents tab, next…
v2.3.0v2.3.0 · 15 Sep 2026What's new in v2.3.0 A bug-hunting round: fuzzing, concurrent agents, corrupted stores, hostile tools and the app's own lifecycle. Everything below was reproduced first. Fixed Guarding a busy port killed the server on it.** Watching or…
v2.2.1v2.2.1 · 8 Sep 2026What's new in v2.2.1 Two bugs that end-to-end testing found and the unit suite could not: a kill that could never stop a Docker container, and a force kill that only worked from the list. The README now describes the app that exists. Fixed…