Piraeus App — OpenBanking & API Integration

Secure OpenData, PSD2-aligned integration, protocol analysis and ready-to-deploy API implementations for the Piraeus mobile platform.

Starting at $300
OpenBanking · PSD2 · OpenFinance · Protocol Analysis

Integrate Piraeus banking capabilities into your systems — quickly, securely, and compliantly

We provide protocol analysis, OAuth2/OpenID Connect flows, secured token handling, transaction webhooks, statement exports and SDKs — all built to meet EU data and PSD2 requirements for Greek retail banking.

Account & Balance Aggregation — unify account lists, IBANs, balances and multi-currency holdings into a single JSON API with pagination and delta-sync support.
Transaction & Statement APIs — retrieve transaction history, categorize entries, generate CSV / Excel / PDF statements and support date-range filtering, paging and optional enrichment (merchant, MCC, geo).
Card & Payments Integration — card status, limits, contactless controls, QR-pay/SEPA initiation helpers and payment verification webhooks for native merchant flows.
Contact Us Deliverables

What we deliver

Production-ready deliverables

  • OpenAPI (v3) specification for all endpoints
  • OAuth2 / OIDC flow mapping and token management modules
  • Node.js / Python reference implementation (sources)
  • Webhook receiver + retry logic, idempotency tokens
  • Automated tests, Postman collection & CI integration
  • Security checklist (GDPR, PSD2, TLS, key rotation)

Example: Account transactions endpoint (pseudo)

GET /api/v1/piraeus/accounts/{account_id}/transactions?
Authorization: Bearer <ACCESS_TOKEN>
Accept: application/json

Query params:
  from=2025-01-01
  to=2025-01-31
  page=1
  per_page=100

Response 200 OK {
  "account_id":"GR...",
  "transactions":[
    {"id":"txn_123","date":"2025-01-04","amount":-42.50,"currency":"EUR","description":"Coffee Shop","mcc":"5812"},
    {"id":"txn_124","date":"2025-01-12","amount":1500.00,"currency":"EUR","description":"Salary Credit"}
  ],
  "page":1,"per_page":100,"total":240
}

Priority integration scenarios

Account provisioning, PSD2 AIS / PIS mapping, transaction notifications, statement exports, card control and merchant reconciliation flows.

Core benefits

  • Fast go-to-market: production API & docs in 5–15 working days (typical)
  • PSD2-aware design: strong customer authentication (SCA) support where required
  • Security-first: audited token handling, TLS, HSM signing options
  • Modular SDKs: Node.js, Python, and lightweight Go client

Compliance & governance

We design for GDPR, PSD2 and local Greek regulatory considerations. We provide consent capture patterns, data minimization recommendations and audit trails for each integration.

API Integration — Quick Technical Guide

1) Discovery & Authorization

  1. Collect app package and scope requirements (accounts, transactions, payments).
  2. Choose authorization model: OAuth2 Authorization Code + PKCE for end-users; client_credentials for backend-to-backend.
  3. Implement secure redirect URIs, state and nonce checks for OIDC flows.

2) Data retrieval & webhook design

  • Use paginated endpoints; prefer cursor-based paging for high-volume accounts.
  • Implement transaction webhooks with HMAC signature validation and idempotency keys.
  • Offer delta-sync to minimize repeated full downloads.

3) Sandbox & testing

We provide sandbox credentials, seeded test data and an automated Postman / Newman collection to reproduce flows and validate rate limits and error cases.

Sample code: fetch transactions (node.js / fetch)

// pseudocode
const res = await fetch('https://api.your-integration.com/piraeus/accounts/GR123/transactions?from=2025-01-01&to=2025-01-31', {
  headers: { 'Authorization': `Bearer ${accessToken}`, 'Accept': 'application/json' }
});
const data = await res.json();
console.log(data.transactions);

Security checklist (short)

  • TLS 1.2+ everywhere; HSTS headers
  • OAuth2 tokens: short-lived access tokens + refresh tokens, store in secure server-side vault
  • Webhook signing, replay window and retry strategy
  • Encrypted logs & PII minimization — GDPR controls

About our studio

We are a technical service studio specializing in app protocol analysis, OpenData/OpenBanking integration and authorized API delivery. Our team has deep fintech experience across Europe and globally — we deliver source code, OpenAPI docs, sandbox tooling and compliance guidance.

  • Experience with PSD2, OpenID Connect, SCA and banking-grade security
  • Cross-platform support: Android & iOS integration patterns
  • Deliverables: production-ready SDKs, CI tests and deployment scripts
  • Transparent pricing from $300 — pay on satisfaction option available

Contact & next steps

Ready to start? Provide the target app package (done), desired integration scope (accounts, transactions, payments, webhooks), and whether you need sandbox or production credentials. Typical first milestone: protocol analysis report and prototype API in 2–5 working days.

Get in touch / Request quote

📱 Original App: Piraeus mobile (full description)

The Piraeus mobile app delivers an upgraded, user-friendly banking experience. From the dashboard you can access relationship overviews, initiate transactions, and find personalized propositions. Key sections include:

  • Deposits — view balances and detailed transaction lists; open new accounts in-app.
  • Cards — manage debit/credit/prepaid cards, payments, temporary block, reissue, limits and controls.
  • Loans — monitor outstanding loans and repayment schedules.
  • Insurance & Investments — view policies and investment products.
  • Security features — quick login (PIN / biometric), extraPIN automatic submission for faster authentication.
  • Support — contact via supportebanking@piraeusbank.gr. Service subject to current capital transfer restrictions.

This description is provided for integration planning only. For production work we align to the bank's published APIs, sandbox and contractual channels.