Documentation

Everything you need to integrate Flash Americas into your application. From getting your first API key to building production-ready shipping solutions.

Get Started

Authentication

Get your API key and learn how to authenticate requests

5 min read

Quick Start

Make your first API call and get shipping rates

10 min read

API Reference

Complete documentation for all endpoints

Reference

API Reference

Popular

Quotes API

Get real-time shipping rates from multiple carriers

POSTGET
Popular

Shipments API

Book shipments and manage the complete lifecycle

POSTGETPUT
Popular

Tracking API

Track packages and get real-time delivery updates

GET

Documents API

Generate labels, BOLs, and customs documentation

GETPOST

Advanced Topics

Webhooks

Real-time notifications for shipment events

Rate Limiting

Understanding and handling API rate limits

Error Handling

Best practices for handling API errors

Cross-Border Shipping

US-Mexico shipping and customs requirements

Developer Resources

Code Examples

Ready-to-use examples in multiple languages

Postman Collection

Import our complete API collection

Why Choose Flash Americas API?

Built for developers who need reliable, scalable shipping solutions

99.9% Uptime

Reliable service you can count on

Fast Response

Sub-second API response times

7+ Carriers

Comprehensive carrier coverage

Expert Support

Dedicated developer support team

Need Help Getting Started?

Our team is here to help you succeed with your integration

Contact SupportView Examples