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Resolve port conflicts v1.0.0

Use this resource to fix a port already in use when a server starts

New

  • 493 downloads
  • 158 likes
  • 142 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install resolve-port-already-in-use

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent recognizes port-in-use errors, identifies the process holding the port with lsof, then offers to stop it or use another port. You get a server that starts.

Mostly picked by

Updated November 2, 2026

Card for the “Resolve port conflicts” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
CC0-1.0

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What you get

  • SKILL.md: error patterns and the lsof command to identify the process
  • SKILL.md: options to free the port or use another one

Good fit for

  • Your dev server refuses to start after a crash
  • Another project is using the same port as yours

Not for

    Tags

    • port
    • eaddrinuse
    • process
    • server

    About

    You say

    “My server won't start, EADDRINUSE on port 3000: sort out the conflict.”

    Card for the “Resolve port conflicts” skill

    Skill published by spencerpauly under the CC0-1.0 license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to fix a port already in use when a server starts
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE7 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • SKILL.md1.8 KB

    Origin and licence

    Listed unmodified

    Author
    spencerpauly
    Source
    github.com/spencerpauly/awesome-cursor-skills/tree/99cd2655788456cc1c685944dcf8c2de82c1ded4/resources/detecting-port-conflicts
    Licence
    CC0-1.0

    Notice

    « detecting-port-conflicts » (spencerpauly, CC0-1.0) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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