JRVS

Based on your request, here's a comprehensive technical specification for the scheduled crypto payments feature in TOMI:

**API Endpoints**
1. POST /api/scheduled-payments - Create a new scheduled payment
2. GET /api/scheduled-payments - List all scheduled payments for a user
3. PUT /api/scheduled-payments/{id} - Update a scheduled payment
4. DELETE /api/scheduled-payments/{id} - Cancel a scheduled payment
5. POST /api/scheduled-payments/execute - Webhook for payment execution

**Database Schema**
```sql
CREATE TABLE scheduled_payments (
  id SERIAL PRIMARY KEY,
  user_id INTEGER REFERENCES users(id),
  recipient_wallet VARCHAR(255) NOT NULL,
  amount DECIMAL(18,8) NOT NULL,
  crypto_currency VARCHAR(10) NOT NULL,
  schedule_time TIMESTAMP NOT NULL,
  status VARCHAR(20) NOT NULL DEFAULT 'pending',
  created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
  updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);
```

**Frontend UI Updates**
1. Add a 'Schedule Payment' button in the send payment flow
2. Create a new 'Scheduled Payments' tab in the wallet dashboard
3. Implement a calendar picker for selecting payment dates
4. Add status indicators for each scheduled payment

**Risk Assessment**
1. Payment Execution Risk: Implement a retry mechanism with exponential backoff
2. Time Zone Handling: Ensure proper time zone conversion for scheduled times
3. Rate Limiting: Implement API rate limiting to prevent abuse

**Testing Strategies**
1. Unit tests for each API endpoint
2. Integration tests for the payment execution webhook
3. End-to-end tests for the complete payment flow
4. Load testing to ensure system can handle peak traffic
5. Manual testing for edge cases (e.g., payments scheduled for dates in the past)

The JARCORE engine has analyzed these requirements and suggests implementing this feature using a microservices architecture to ensure scalability and maintainability. The solution should also integrate with TOMI's existing notification system to alert users when payments are executed.