Detects and provides information about Astro dev servers, including port, PID, memory usage, and allows killing them.
Detects and provides information about Bun dev servers, including port, PID, memory usage, and allows killing them.
Detects and provides information about Deno dev servers, including port, PID, memory usage, and allows killing them.
Detects and provides information about Django dev servers, including port, PID, memory usage, and allows killing them.
Detects and provides information about esbuild dev servers, including port, PID, memory usage, and allows killing them.
Detects and provides information about Express dev servers, including port, PID, memory usage, and allows killing them.
Detects and provides information about FastAPI dev servers, including port, PID, memory usage, and allows killing them.
Detects and provides information about Fastify dev servers, including port, PID, memory usage, and allows killing them.
Detects and provides information about Flask dev servers, including port, PID, memory usage, and allows killing them.
Detects and provides information about Gunicorn dev servers, including port, PID, memory usage, and allows killing them.
Detects and provides information about Hono dev servers, including port, PID, memory usage, and allows killing them.
Detects and provides information about Hugo dev servers, including port, PID, memory usage, and allows killing them.
Detects and provides information about Jekyll dev servers, including port, PID, memory usage, and allows killing them.
Detects and provides information about Koa dev servers, including port, PID, memory usage, and allows killing them.
Detects and provides information about Next.js dev servers, including port, PID, memory usage, and allows killing them.
Detects and provides information about Nuxt dev servers, including port, PID, memory usage, and allows killing them.
Detects and provides information about PHP dev servers (e.g., php-builtin), including port, PID, memory usage, and allows killing them.
Detects and provides information about Python dev servers, including port, PID, memory usage, and allows killing them.
Detects and provides information about React dev servers (e.g., create-react-app), including port, PID, memory usage, and allows killing them.
Detects and provides information about Remix dev servers, including port, PID, memory usage, and allows killing them.
Detects and provides information about Ruby dev servers, including port, PID, memory usage, and allows killing them.
Detects and provides information about Vite dev servers, including port, PID, memory usage, and allows killing them.
Detects and provides information about webpack-dev-server instances, including port, PID, memory usage, and allows killing them.
MCP server that inspects, manages, and kills local dev servers. Stop guessing what's on :3000.
Pairs with terminal-history-mcp — together they give your AI agent full memory of your dev environment: what you ran, what's running.
Every dev hits these daily:
Error: listen EADDRINUSE :::3000 — what's holding the port?
5 forgotten node / vite / next PIDs from last week eating RAM
Switching projects → no idea which dev servers still running
lsof -i :3000, kill -9 <pid>, repeat
localhost-mcp makes it one tool call.
Related MCP server: devpulse-mcp
npm install -g localhost-mcpWire into Claude Code:
claude mcp add --scope user localhost -- localhost-mcpOr any MCP-compatible client. The command runs as a stdio MCP server.
Tool | Purpose |
| All listening dev servers w/ port, pid, framework, project, uptime, mem, cpu |
| Inspect single port — who holds it |
| Kill by pid or port. Dry-run by default; pass |
| Detect long-running, idle, memory-heavy dev servers |
| Why is port X busy + 5 free alternatives nearby |
{
"port": 3000,
"pid": 48211,
"process": "node",
"cmdline": "next dev",
"cwd": "/Users/me/code/myapp",
"project_name": "myapp",
"framework": "next.js",
"uptime_seconds": 14523,
"memory_mb": 412,
"cpu_pct": 0.3,
"user": "me"
}kill_server defaults to dry-run. Must pass confirm=true.
Refuses to kill PIDs < 1000 (system processes).
Refuses processes outside the dev whitelist (node, python, ruby, go, deno, bun, php, java, rails, vite, next, etc).
SIGTERM first, escalates to SIGKILL after 5s timeout.
next.js, vite, nuxt, remix, astro, webpack-dev-server, esbuild, create-react-app, express, fastify, koa, hono, rails, django, flask, fastapi, uvicorn, gunicorn, deno, bun, php-builtin, jekyll, hugo.
Falls back to package.json sniffing when the cmdline is generic (node server.js).
macOS — full support (uses lsof)
Linux — full support (uses lsof + /proc)
Windows — basic port scan only (uses netstat); cwd / framework detection limited
localhost-mcp list # JSON list of all dev servers
localhost-mcp zombies # JSON list of zombie candidates
localhost-mcp # Start MCP stdio servergit clone https://github.com/hasanjahidul/localhost-mcp.git
cd localhost-mcp
npm install
npm run build
node dist/cli.js listMIT
Unclaimed servers have limited discoverability.
If you are the server author, to access and configure the admin panel.
A MCP server built for developers enabling Git based project management with project and personal…
MCP Spec Compliance MCP — audits any MCP server.json against the official Model Context Protocol
MCP server for managing Prisma Postgres.
We provide all the information about MCP servers via our MCP API.
curl -X GET 'https://glama.ai/api/mcp/v1/servers/HasanJahidul/localhost-mcp'
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