# Remittance Project ```mermaid sequenceDiagram participant C as Client participant R as CreateCard Route Handler participant S as Circle Service participant L as Circle Client Lib C->>R: 1. POST /cards R->>R: 2. parse req. body R->>S: 3. CircleService.createCard S->>L: 4. CircleAPI.createCard L->>S: CircleAPI.CardResponse S->>R: CircleService.CardResponse? R->>R: 5. Store something in DB R->>R: 6. prepare resp. body R->>C: 202: Accepted ```