# Qonto Documentation Index

This comprehensive resource catalog documents Qonto's banking and financial APIs, SDKs, and developer tools.

## Core API Categories

**Authentication & Security**
- OAuth 2.0 flows with scope-based permissions
- API key authentication methods
- Strong Customer Authentication (SCA) sessions
- PSD2 QSeal certificate identification

**Account Management**
- Business account creation, updates, and closure
- Organization and membership administration
- Team configuration and label management
- Subscription plan retrieval

**Payment & Transfer Services**
- SEPA transfers with beneficiary verification
- International transfers with multi-currency support
- Internal account transfers
- Bulk transfer operations
- SEPA Direct Debit collections and mandates
- Payment link generation and tracking
- Terminal payment processing

**Card Operations**
- Physical and virtual card creation
- Card locking, unlocking, and restrictions
- Bulk card issuance
- Card appearance customization
- Card limit and option management

**Expense Management**
- Client and supplier invoice handling
- Quote and credit note generation
- Product catalog management
- Insurance contract documentation
- Attachment uploads for transactions
- Expense request workflows with approvals

**Financial Data**
- Transaction listing and retrieval
- Bank statement access
- Cash flow category management
- Child transaction linking

**Webhooks & Events**
- Real-time event subscriptions across 15+ event types
- Signature verification and retry handling
- Testing via webhook.site

## Developer Tools

**SDK Libraries** offering customizable UI components for:
- Transaction displays
- Transfer creation flows
- Card management interfaces
- Beneficiary administration

**Onboarding API** facilitating:
- Company registration workflows
- Document file management
- Registration progress tracking
- Webhook event notifications

**MCP Server** providing AI assistant integration with 50+ tools across banking, invoicing, and business operations.

## Rate Limits & Best Practices

The platform implements rate limiting and encourages idempotent request design. Pagination supports efficient data retrieval. Sandbox environment testing precedes production deployment.