Mintlify uses port 3000 by default. You can use the --port flag to customize the port Mintlify runs on. For example, use this command to run in port 3333:
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mintlify dev --port 3333
You will see an error like this if you try to run Mintlify in a port that’s already taken:
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Error: listen EADDRINUSE: address already in use :::3000