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Wednesday, July 24th 2024

Improvements to command line logs

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Damien Simonin Feugas

Software Engineer

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Julia Shi

Software Engineer

Vercel CLI v35 introduces new commands to access of deployment and runtime logs:

  • vercel deploy --logs deploys and shows build logs
  • vercel inspect --logs shows build logs for an existing deployment
  • vercel logs now follows runtime logs of an existing deployment

You can now use the --json option to stream logs as JSON. This makes it easier to parse and filter logs using tools like jq.

vercel logs --json | jq 'select(.level == "warning")'
Using the Vercel CLI with jq to filter for warning logs

To use these features, update to the latest version of the Vercel CLI:

pnpm add -g vercel
Install the Vercel CLI globally using the pnpm package manager.

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