Agent skill · software engineering · vercel
list-npm-package-content
List the contents of an npm package tarball before publishing. Use when the user wants to see what files are included in an npm bundle, verify package contents, or debug npm publish issues.
Why this skill is useful
Adds an executable script that automates the process of listing npm package contents, which is not commonly found in public documentation.
What it needs
Requires bash installed locally. About 1k tokens when loaded. Last updated 2026-08-07. 26,057 stars on the source repository.
What this skill does
List npm Package Content This skill lists the exact contents of an npm package tarball - the same files that would be uploaded to npm and downloaded by users. Usage Run the script from the package directory (e.g., packages/ai): The script will build the package, create a tarball, list its contents, and clean up automatically. Understanding Package Contents The files included are determined by: 1. files field in package.json - explicit allowlist of files/directories 2. .npmignore - files to exclude (if present) 3. .gitignore - used if no .npmignore exists 4. Always included: package.json, README, LICENSE, CHANGELOG 5. Always excluded: .git, nodemodules, .npmrc, etc.
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills vercel/list-npm-package-content