Developer Utilities · Free tool
CLI DX Checklist
Interactive 16-item checklist for building CLIs developers love — first-run experience, machine-readable output, error handling, trust + safety, distribution. Saved to your browser. Distilled from clig.dev and 12-Factor CLI.
Updated May 2026
Progress
0 / 16 (0%)
First-run experience
Output that respects context
Error handling
Trust + safety
Distribution
Export:
Distilled from clig.dev (Command Line Interface Guidelines), 12-Factor CLI, and a decade of public CLI post-mortems. Saved to your browser only — no account, no upload.
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What it does
16-item interactive checklist for building CLIs developers love. Distilled from clig.dev (Command Line Interface Guidelines), 12-Factor CLI, and a decade of public CLI post-mortems. Five categories: first-run experience, output that respects context, error handling, trust + safety, distribution.
Saved to your browser as you go. Use during build or as a self-review before public launch.
Embed this tool on your siteShow snippetHide
Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.
<iframe src="https://freetoolarena.com/embed/cli-dx-checklist" width="100%" height="720" frameborder="0" loading="lazy" title="CLI DX Checklist" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>How to use it
- Enter your tool name (saved to browser).
- Check each item as your CLI implements it.
- Read the rationale on items you're unsure about — they explain why each matters.
- Aim for 14+ before launch; 10+ before alpha.
Frequently asked questions
- What makes a good developer tool CLI?
- Five clusters: helpful first-run (--help, --version, zero-config defaults), output that respects pipes vs TTY (machine-readable JSON, color auto-detect), distinct exit codes for distinct failures, actionable error messages, and trust mechanisms (--dry-run, confirmations on destructive actions, no secrets in argv). The checklist breaks each down.
- Why does machine-readable output matter so much?
- Devs script around your tool. If your default output is human-pretty but un-parseable, every user has to write fragile awk/grep around it. A --json flag turns your tool into a primitive others can compose. The biggest force multiplier in the checklist.
- How important is shell completion?
- Tab completion is a 10× UX upgrade for any tool with subcommands or flags. Most modern CLI frameworks (Cobra, Click, Clap, Yargs) generate it for free. The cost-benefit is unbeatable — generate once, document how to install, ship in your release tarball.
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Show the math + sources
Formula
Progress = checked_items / total_items × 100. Items grouped into 5 categories (first-run, output context, errors, trust/safety, distribution). 16 items total. Rationale per item explains why each matters in the failure-mode sense — what specifically breaks for users when you skip it.
What this assumes
Items are surface-area checklist patterns drawn from clig.dev (Command Line Interface Guidelines), 12-Factor CLI, and public CLI post-mortems. Aimed at devs building CLIs they'll launch publicly — internal-only tools can skip distribution items. Aim for 14+ before public launch; 10+ before alpha.
Sources
Learn more
Guides about this topic
- Developers & Technical · GuideHow to Design CLI Tools Developers LoveSix design principles for CLIs developers love (composability, sensible defaults, human errors, trust by default, predictability, fast feedback). First-run UX details, workflow automation patterns, and the 16-item self-review checklist.
- Developers & Technical · GuideBest Practices for Building Developer ToolsPractical patterns for CI/CD pipeline tools, IDE choice, what companies pay for, testing approaches, documentation standards, success metrics, and the frameworks/libraries (Cobra, Click, Clap, Charm, etc.) that show up repeatedly in shipped dev tools.
- Money & Business · GuideHow to Get Developers to Adopt Your Tools30-day retention metric, distribution strategies that work (HN, niche Slacks, technical content), anti-patterns to avoid (begging on Twitter, paid ads), and the developer-burnout angle that has real demand in 2026.
- Using Our Tools · GuideHow to generate QR codesMake a QR code for a URL, wifi, vCard, or plain text. What error-correction means, how big to print, how to test it.
- Using Our Tools · GuideHow to create a strong passwordThe entropy math, 2026 NIST rules, passphrases vs passwords, password managers, MFA and hardware keys, where passkeys fit, 5 mistakes that still lose accounts
- Developers & Technical · GuideHow to encode and decode Base64What Base64 is (not encryption), the 3-to-4 encoding mechanics, standard vs URL-safe vs MIME variants, 33% overhead, when to use it, common mistakes
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