How to Make Money from CLI Tools You Build
You built a CLI tool. People use it. But you're not making money from it. Most developer tools are free — and that's fine for open source contributions. But if you're spending serious time building and maintaining tools, there are legitimate ways to generate revenue without compromising the developer experience.
This article covers 7 monetization models for CLI tools, with real examples and practical implementation details.
Model 1: Freemium — Free Core, Paid Premium
The most common model. The core tool is free and open source. Premium features require a license key.
// lib/license.ts
async function checkLicense(): Promise<'free' | 'pro' | 'team'> {
const key = process.env.MYTOOL_LICENSE || await loadStoredKey();
if (!key) return 'free';
try {
const response = await fetch('https://api.mytool.dev/license/verify', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ key }),
});
const data = await response.json();
return data.valid ? data.tier : 'free';
} catch {
// Offline grace period: trust cached license for 7 days
const cached = await loadCachedLicense();
if (cached && Date.now() - cached.verifiedAt < 7 * 86400000) {
return cached.tier;
}
return 'free';
}
}
// Gate premium features
program
.command('advanced-report')
.action(async () => {
const tier = await checkLicense();
if (tier === 'free') {
console.log(chalk.yellow(' This feature requires a Pro license'));
console.log(chalk.gray(' Upgrade: https://mytool.dev/pricing'));
process.exit(0);
}
// Run premium feature
});
What to gate: Advanced output formats, batch processing, CI/CD integrations, priority support, team features. What to keep free: Core functionality, basic usage, single-project use.
Model 2: Paid Articles About Your Tool
Write tutorials and guides featuring your tool, then submit them to publications that pay:
| Publication | Payment | Acceptance Rate |
|---|---|---|
| Smashing Magazine | $200-400 | Low |
| SitePoint | $150-250 | Medium |
| LogRocket Blog | $300-350 | Medium |
| CSS-Tricks | $250 | Low |
| Auth0 Blog | $300-450 | Medium |
Each article serves double duty: it generates income AND drives traffic/installs for your tool.
Model 3: Gumroad / Lemon Squeezy
Sell your tool as a digital product:
CLI tool + source code: $10-30
CLI tool + video tutorial: $20-50
CLI tool bundle (5+ tools): $30-80
CLI tool + API access: $10-20/month
List on Gumroad, Lemon Squeezy, or your own site with Stripe.
Model 4: npm Sponsorship + GitHub Sponsors
{
"funding": {
"type": "github",
"url": "https://github.com/sponsors/yourname"
}
}
When users run npm fund, they see your sponsorship link. Combine with a postinstall message:
{
"scripts": {
"postinstall": "echo '\\n Thanks for using mytool! Support development: https://github.com/sponsors/yourname\\n'"
}
}
Model 5: Consulting and Custom Development
Your published tools are a portfolio. They demonstrate expertise in:
- Node.js/TypeScript development
- CLI tool architecture
- Developer experience design
- npm ecosystem knowledge
Offer consulting services:
Custom CLI tool development: $2,000-10,000
Internal tool audits: $500-2,000
Developer workflow optimization: $150-250/hr
Model 6: SaaS Backend
Your CLI tool talks to a paid API:
// Free: local-only analysis
program.command('analyze').action(async () => {
const results = await localAnalysis(target);
printResults(results);
});
// Paid: cloud-powered analysis with AI
program.command('analyze --cloud').action(async () => {
const tier = await checkLicense();
if (tier === 'free') {
console.log('Cloud analysis requires a subscription');
return;
}
const results = await fetch('https://api.mytool.dev/analyze', {
headers: { Authorization: `Bearer ${apiKey}` },
body: JSON.stringify({ target }),
});
printResults(await results.json());
});
Model 7: Bounties and Open Source Rewards
Contribute to bounty-funded projects:
Algora.io: Cash bounties on GitHub issues
Expensify: $250 per merged bug fix
Open Collective: Funded feature requests
Your CLI tool skills directly transfer to fixing issues in other projects.
Revenue Stack for CLI Tool Builders
The optimal approach combines multiple models:
Free open source tool → builds reputation and installs
Paid articles about the tool → $200-400 per article
Gumroad listing → passive income ($10-30 per sale)
GitHub Sponsors → recurring donations
Consulting → high-value client work from tool visibility
Bounties → $200-500 per merged contribution
Expected monthly revenue (with 5+ tools and consistent effort):
- Articles: $400-800/month (2-3 articles)
- Gumroad: $100-300/month
- Sponsors: $50-200/month
- Consulting: $1,000-5,000/month (variable)
- Bounties: $200-500/month
- Total: $1,750-6,800/month
Getting Started
Build something useful — solve a real problem you have
Publish to npm — make it installable in seconds
Write about it — the article pays AND markets the tool
List on Gumroad — passive income from day one
Set up GitHub Sponsors — capture goodwill
Keep building — each tool compounds the others
Conclusion
CLI tools are an underrated income channel. Each tool you build serves as a product, a portfolio piece, an article topic, and a consulting credential simultaneously. The key is stacking multiple revenue models on the same asset.
Wilson Xu has published 16+ npm CLI tools and generated revenue through articles, Gumroad sales, and consulting. Follow at dev.to/chengyixu.