Platform Capabilities (Local)
When running the mobile sandbox (playground/mobile-sandbox) locally, there is no real mobile banking platform. The mobile harness (@cdx-extensions/di-sdk-mobile) provides all platform capabilities through mock data and simulated behaviour — the same harness used for mobile widgets.
For prerequisites, setup, the capabilities diagram, mock data files, branding, and local development commands, see Mobile Widgets — Platform Capabilities (Local).
Feature-specific notes
Mobile features use the same SDK hooks (useUserContext, useBranding, getHttpClient) as widgets. Map branding tokens from sdk.useBranding() to React Native StyleSheet values — do not use MUI or CSS theme objects.
When you run playground/mobile-sandbox locally, verify your feature under different institution brandings using the sandbox gear icon before submitting.
For method signatures, parameters, return types, and code examples, see SDK Reference.
Local build targets
Each mobile feature defines three Nx targets:
| Target | Command | Description |
|---|---|---|
build | pnpm exec nx run <name>:build | Production build with tsup (CJS + ESM + .d.ts) |
dev | pnpm exec nx run <name>:dev | Watch mode for development |
typecheck | pnpm exec nx run <name>:typecheck | TypeScript type checking (no emit) |
Example feature build:
pnpm exec nx run agent-feature:build
Next Steps
- Extension Template Catalog — Scaffold from DI template catalog
- Host App Integration — Packaging and submission
- FAQ & Troubleshooting — Common issues and recommendations