Started accepting Lightning sats for API access to my developer tools:

Sats Calculator (free, no API needed): http://5.78.129.127/sats

API with Lightning checkout:

  • 50 free requests/day
  • Pay-per-use: 1,500 sats for 100 calls
  • Hobby: 12K sats/month
  • Pro: 40K sats/month

Checkout creates real Lightning invoices via Coinos. Payment is verified automatically and API key is activated instantly.

http://5.78.129.127/checkout/

The API has 28 endpoints — SSL checker, DNS lookup, email validation, hash generator, crypto prices, JSON tools, etc.

Lightning address for tips: devtoolkit@coinos.io

Would be interested to hear if anyone else is building Lightning-powered services. The checkout flow was surprisingly easy to implement with Coinos API.