API Documentation

Everything you need to integrate surplus lines tax filing into your platform.

Quick Start

Make your first API call in under 5 minutes.

Authentication

Learn about API keys, scopes, and rate limits.

API Reference

Complete reference for all API endpoints.

Webhooks

Receive real-time notifications for filing events.

Overview

The API allows you to programmatically file surplus lines taxes across all 50 US states. We handle the complexity of varying state requirements, tax calculations, and portal submissions.

Key Features

Multi-state support - File in all 50 states with a single API
Automatic tax calculation - We handle state-specific tax rates and rules
PDF extraction - Extract policy data from uploaded documents
Real-time webhooks - Get notified when filings are submitted or accepted

Base URL

https://api.arqu.io/api/v1

Need Help?

Contact our developer support team at support@arqu.io or visit our contact page.