Daily Expenses — API Integration & OpenFinance Solutions

Deliverables

• OpenAPI / Swagger specification (interface definitions)
• Protocol analysis report (data model, network calls, auth flow)
• Runnable backend example (Node.js / Python, optional Go)
• Client sync samples (Android / iOS / JS SDK)
• Automated test scripts, interface validation cases and Postman collection
• Ops and compliance guidance (privacy, data minimization, log retention)

Quick example: generic reconciliation API (pseudo)

POST /api/v1/dailyexpenses/statement
Content-Type: application/json
Authorization: Bearer <ACCESS_TOKEN>

{
  "user_id": "uid-12345",
  "from": "2025-01-01",
  "to": "2025-01-31",
  "format": "xlsx"  // json / csv / xlsx
}

Response 200 OK
{
  "status":"OK",
  "file_url":"https://files.example.com/exports/stmt-uid-12345-202501.xlsx",
  "summary":{
    "total_income":1200.00,
    "total_expense":890.50,
    "categories":{
      "food":250.00,
      "transport":120.50
    }
  }
}

Integration scenarios

Personal finance aggregation, corporate expense reimbursements, automatic import into accounting software, bank statement matching, rule-based expense categorization and budget alerts.

API integration notes (technical highlights)

1. Requirements: provide target scenarios (export, sync, bank import, webhook) and sample data.
2. Permissions & compliance: define data-minimization rules and user consent flows (OAuth2 / API keys / JWT).
3. Protocol analysis: with client authorization we analyze app-backend communication, or adapt to public import formats (OFX/CSV/PSD2).
4. Interface design: design idempotent, paginated, filterable and bulk export endpoints (following OpenAPI).
5. Delivery & acceptance: code, docs, test cases; production deployment scripts delivered after client acceptance.

Security & compliance

All work is performed under client authorization or via public/authorized APIs. We follow data minimization, TLS for transport, sensitive field masking, and provide GDPR / local data protection guidance. Any reverse-engineering or protocol capture is done only with explicit authorization or client-provided test accounts.

About us

We are a technical studio specializing in app protocol analysis and authorization API integration. Our team has expertise in mobile app protocol parsing, OpenData/OpenFinance integrations, and accounting/payment system connectors. We deliver end-to-end solutions.

• Support for Android / iOS client SDKs and backend implementations
• Compliance-first approach: privacy and local regulation adaptation
• Deliverables include source code, OpenAPI, test scripts and deployment guides
• Transparent pricing: from $300; option to accept delivery before final payment

Next steps & contact

Provide the target app name (Daily Expenses / mic.app.gastosdiarios) and your integration needs (e.g. export, bank statement import, or accounting sync). We will respond with a project proposal and quote in 1–3 business days.

Go to contact page