npx CLI Tool Development (Bun-First)

Build and publish npx-executable command-line tools using Bun as the primary runtime and toolchain, producing binaries that work for all npm/npx users (Node.js runtime).

When to Use This Skill

Use when:

• Creating a new CLI tool from scratch
• Building an npx-executable binary
• Setting up argument parsing, sub-commands, or terminal UX for a CLI
• Publishing a CLI tool to npm
• Adding a CLI to an existing library package

Do NOT use when:

• Building a library without a CLI (use the npm-package skill)
• Building an application (not a published package)
• Working in a monorepo (this skill targets single-package repos)

Toolchain