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vercel flags datafile summarizes linked project flags

Introduced 2026-10-22 · score 0.97

HOW TO USE IT

When inspecting flags for a linked project, run `vercel flags datafile` to summarize variants, rule and target counts, and environment reuse. Choose an environment with `--environment`, use `--sdk-key` for SDK key authentication, or add `--json` for JSON output.

vercel flags datafile --environment <development|preview|production> --json
vercel flags datafile --sdk-key

WHY THIS HELPS

Inspect flag variants, rules, targets, and environment reuse for a linked project.

REQUIREMENTS AND LIMITATIONS

  • Version: 65.1.0
  • --environment: Selects development, preview, or production.
  • --sdk-key: Uses an SDK key for authentication; the key is read from stdin or a masked prompt.
  • --json: Outputs a JSON document.
  • Prerequisite: Requires a linked project. Feature is listed in Vercel CLI 65.1.0 release notes.
  • The summary covers the variants each flag can serve, its rule and target counts, and the environment it reuses.
  • Preview and production use the CLI user token.
  • Development requests a project OIDC token and uses the user token if no OIDC token is available.
  • SDK key authentication reads from stdin or a masked prompt so the key never appears in argv.

FIRST-PARTY EVIDENCE

Check the installed version and the source before using it. Entry JSON

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