Add CashApp as a buy bitcoin provider#765
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erdemyerebasmaz merged 7 commits intomainfrom Mar 26, 2026
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Introduce a CashApp provider that builds a cash.app/launch/lightning deep link from a bolt11 invoice. Remove the BuyBitcoinProviderApi trait (single implementor) and use MoonpayProvider directly. The CashApp flow is a plain function since it has no server-side dependencies.
Replace the flat struct with a tagged enum so each provider carries
only its own parameters:
BuyBitcoinRequest::Moonpay { locked_amount_sat, redirect_url }
BuyBitcoinRequest::CashApp { amount_sats }
Route buy_bitcoin through the selected variant: MoonPay uses an
on-chain deposit address, CashApp generates a bolt11 invoice and
wraps it in a deep link. CashApp is restricted to mainnet.
Expose the new enum variants to JavaScript/TypeScript (wasm-bindgen) and Flutter (flutter_rust_bridge).
Add --provider flag (moonpay/cashapp) and construct the matching enum variant.
Add a CashApp section to the buy-bitcoin guide with platform-specific navigation guidance (pre-open pattern for PWA/mobile). Add CashApp code examples across all nine supported languages.
Update CLAUDE.md CLI modification policy to require fixing CI failures with minimal changes. Fix language CLIs to use the new tagged union BuyBitcoinRequest.Moonpay constructor.
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Summary
BuyBitcoinRequestfrom a flat struct to a tagged union so each provider carries only its own parametersBuyBitcoinProviderApitrait (single implementor) and useMoonpayProviderdirectlycash.app/launch/lightning/<bolt11>deep link from a Lightning invoiceChanges
cashapp.rs, remove trait, simplifyMoonpayProviderMoonpay { locked_amount_sat, redirect_url }/CashApp { amount_sats }--providerflagCLI language ports are intentionally excluded — the Sync CLI workflow will handle them.
Original branch:
feature/cashapp-buy-bitcoin