Run a package's CLI binary without installing it as a dependency, using npm exec / npx
domain: docs.npmjs.com · 6 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Run npx <pkg> to fetch and execute a binary on the fly without adding it to package.json
For reproducible pinned versions use npx <pkg>@<version> (e.g. npx playwright@1.49.1)
Use explicit double-hyphen to pass flags to the executed command: npm exec -- <pkg>@<version> -- <args>
Supply extra packages on PATH with npm exec --package=<pkg> -- <cmd> (repeatable --package for multiple)
Run a custom command string with npm exec -c '<cmd>' or npm exec --package=foo -c '<cmd>'
When the target package is a local dependency, npm exec matches a specifier only if the local dep has the exact same name and version
Known gotchas
npx requires all its flags BEFORE the positional args; npm exec stops flag parsing at -- (double dash)
If the requested package isn't a local dependency you get an install prompt; suppress with --yes (or --no); when stdin is not a TTY or in CI, --yes is assumed automatically
With multiple bin entries and ambiguity, npm exec exits with an error — pass explicit --package to disambiguate
Non-interactive npm exec (no args, no --call) opens an interactive shell and is not supported in CI when stdin is a TTY (can hang)
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