Build with Fosro's API

Integrate powerful e-invoicing and accounting functionality into your applications with our comprehensive REST API.

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Powerful API Features

Everything you need to build robust e-invoicing and accounting integrations

Invoice Management

Create, update, and manage invoices programmatically. Support for multiple currencies, tax calculations, and payment tracking.

Customer Management

Manage customer data, contact information, and communication history through our comprehensive API endpoints.

Product Catalog

Manage your product catalog with pricing, descriptions, and inventory tracking through our API.

Payment Processing

Track payments, record transactions, and manage payment allocations with automatic reconciliation.

Financial Reporting

Access comprehensive financial reports, analytics, and insights through our reporting API endpoints.

Webhooks & Events

Receive real-time notifications for invoice updates, payments, and other important events via webhooks.

Get Started in Minutes

Follow these simple steps to integrate Fosro's API into your application

1

Create Your Account

Sign up for a free Fosro account to get access to your API credentials and sandbox environment.

2

Generate API Keys

Navigate to your account settings to generate API keys for authentication and secure access.

3

Explore the Documentation

Review our comprehensive API documentation with examples, SDKs, and integration guides.

4

Start Building

Use our sandbox environment to test your integration before going live with real data.

Quick API Example

curl -X POST "https://api.fosro.com/v1/invoices" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "customer_id": "cust_123",
    "items": [
      {
        "name": "Web Development",
        "quantity": 1,
        "unit_price": 1000.00,
        "tax_rate": 0.10
      }
    ],
    "due_date": "2024-02-15"
  }'

This creates a new invoice with automatic tax calculation and payment tracking.

Complete API Documentation

Everything you need to integrate Fosro's API into your applications

Interactive Docs

Explore our interactive API documentation with live examples and real-time testing capabilities.

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SDKs & Libraries

Official SDKs for popular programming languages including PHP, JavaScript, Python, and more.

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Code Examples

Real-world code examples and integration patterns for common use cases and scenarios.

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Authentication

Secure API authentication using API keys, OAuth 2.0, and webhook signature verification.

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Webhooks

Set up webhooks to receive real-time notifications for events like payments and invoice updates.

Configure Webhooks →

Support

Get help from our developer support team and community forums for integration questions.

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Ready to Start Building?

Join thousands of developers who are already using Fosro's API to build powerful e-invoicing and accounting integrations.

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