Itaú Cartões API Integration & Open Finance Solutions

Standard Deliverables

• OpenAPI / Swagger specifications and sample requests
• Protocol analysis report (authorization, signatures, and session management) with compliant scope
• runnable backend code (Node.js / Python / Go optional) and deployment guide
• Automated tests and Postman collections
• Compliance guidance (privacy, data retention, logging) and NDA support

Example: Retrieve Electronic Invoices

POST /api/v1/itau/cards/invoices
Content-Type: application/json
Authorization: Bearer <ACCESS_TOKEN>

{
  "account_id": "user_itau_123",
  "from_date": "2025-09-01",
  "to_date": "2025-09-30",
  "format": "PDF" // json | csv | pdf
}

Response: {
  "status": "OK",
  "invoice_id": "FAT-202509-0001",
  "download_url": "https://s3.example.com/invoices/FAT-202509-0001.pdf",
  "generated_at": "2025-10-20T08:12:00Z"
}

Use cases

Account binding and session management, virtual card issuance and revocation, wallet token integration, boleto lifecycle management, installments applications and reconciliation for merchants.

Core advantages

• Fast deployment: from protocol analysis to MVP API to full delivery
• Compliance-first: follows local regulations and privacy requirements
• Multiplatform support: Android / iOS SDKs and server-side APIs
• Deliverables are production-ready with tests and sample data
• Secure implementation: tokenization, least privilege, and detailed audit logs

Target customers

E-commerce platforms, billing and payment providers, ERP integrators, corporate finance teams, merchant acquirers.

Step 1: Preparation

1. Provide target app name (already provided) and the integration scope (e.g., balance sync, reconciliation export, instant transfers, card management, merchant acquiring).
2. Confirm compliance boundaries: whether reverse engineering in a test environment is allowed to map the authorization chain.
3. Define delivery formats: OpenAPI, SDK, sample scripts, and deployment docs.

Step 2: Authorization & entry points

• OAuth2 / JWT session management with refresh token strategy
• Accounts: fetch user info and card list
• Virtual cards: create/pause/reclaim, partial card number exposure
• Boleto: generate, query status, download PDF
• Transactions: history, export for reconciliation, webhook notifications
• Installments: simulate plans and submit applications

Step 3: High-level integration flow

1. Requirements confirmation → provide test authorization or share captures if available.
2. Protocol analysis (2-5 business days) → determine authentication and API contracts.
3. Development (3-10 business days) → implement API and SDK.
4. Validation & delivery (1-3 business days) → provide docs, test cases, and demo environment.
5. Optional: cloud deployment, operations handover, and compliance audit support.

About us

We are a technical studio focused on app protocol analysis and compliant API integration. Our team has extensive experience across payments, banking tech, and security, delivering end-to-end solutions including protocol analysis, interface implementation, and OpenData/OpenFinance integration.

• PSD2/Open Banking compliant delivery
• Android / iOS authorization workflow analysis & SDKs
• Deliverables: source code, OpenAPI, testing scripts, deployment guides
• Transparent pricing, starting at $300

Contact

If you want a quote, submit your target app name and detailed requirements, please visit our contact page:

Visit Contact Page