# port (puerto)

A numbered door on a computer that an app listens on, like 3000. Only one app can use a port at a time.

**Example:** For example, the `:3000` at the end of `http://localhost:3000` tells your browser to connect to port 3000.


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Source: [Agentic Makers](https://agenticmakers.app/en/glossary/port) · License: CC BY 4.0