Zap sats to your favorite GitHub repos and their contributors, directly via Lightning.

1. Visit a GitHub repo or profile with the extension installed
2. If the repo has a .github/FUNDING.yml with a lightning: key, or a user has a Lightning Address in their bio or profile README, a Zap button shows up
3. Click it, pick an amount, pay from your own wallet
4. If the recipient's wallet supports LUD-21 verify, payment gets picked up automatically and the modal resets. If not, there's an "I've Paid" button to reset it manually

• Zapstar.Api/ — ASP.NET Core minimal API on .NET 10. Resolves whether a repo or user has a working Lightning Address, generates invoices via LNURL-pay, checks payment status. Runs on Coolify via Docker.
• Zapstar.Api.Tests/ — xUnit tests for the resolver and LNURL logic.
• extension/ — Manifest V3 browser extension. Detects GitHub pages, shows the zap button, handles the payment modal.
• PRIVACY.md — privacy policy, required for the Chrome Web Store listing.

cd Zapstar.Api
dotnet restore
dotnet run

Check the console output for the localhost port to check where the project started on.

Set a GitHub token to avoid the 60 req/hour unauthenticated rate limit:

dotnet user-secrets init
dotnet user-secrets set "GitHub:Token" "ghp_yourtokenhere"

cd Zapstar.Api.Tests
dotnet test

Runs automatically on every pull request via GitHub Actions. Merging to master is blocked until tests pass.