vercel logs

The vercel logs command displays and follows runtime logs data for a specific deployment. Runtime logs are produced by Edge Middleware and Vercel Functions. You can find more detailed runtime logs on the Logs page from the Vercel Dashboard.

From the moment you run this command, all newly emitted logs will display in your terminal, for up to 5 minutes, unless you interrupt it.

Logs are pretty-printed by default, but you can use the --json option to display them in JSON format, which makes the output easier to parse programmatically.

vercel logs [deployment-url]

These are options that only apply to the vercel logs command.

The --json option, shorthand -j, changes the format of the logs output from pretty print to JSON objects. This makes it possible to pipe the output to other command-line tools, such as jq, to perform your own filtering and formatting.

vercel logs --json | jq 'select(.level == "warning")'

The --follow option, shorthand -f, can be used to watch for additional logs output.

The --limit option, shorthand -n, can be used to specify the number of log lines to output.

The --output option, shorthand -o, can be used to specify the format of the logs output, this can be either short (default) or raw.

The --since option can be used to return logs only after a specific date, using the ISO 8601 format.

The --until option can be used to return logs only up until a specific date, using the ISO 8601 format.

The following global options can be passed when using the vercel logs command:

• --cwd
• --debug
• --global-config
• --help
• --local-config
• --no-color
• --scope
• --token

For more information on global options and their usage, refer to the options section.