The Modern Unified Accounting API

Seamlessly pull and push data from all accounting systems with our cutting-edge unified accounting API designed for speed, simplicity, and consistency.

Automate Anything ━ Effortlessly automate business processes, analytics, or build amazing products with near realtime accounting information.

For Everyone ━ Our pricing plans fit any use case, whether you're a startup, hobbyist, enterprise, or building an in-house solution.

Secure ━ We prioritize your data security by following the best practices from ISO27001, SOC2, and GDPR, with data residency in Europe.

What we do for you

Authentication Flows

Every API handles authentication differently. SmoothIntegration ensures a seamless experience, leaving users with a great first impression of your product. Read More →

Rate limiting

SmoothIntegration is designed to respect API rate limits while maximizing them with optimized concurrency for fast imports.

Always Up to Date

By combining webhooks and frequent polling, we ensure consistently up-to-date data, even when third-party APIs lack real-time support. Read More →

Scaling

We seamlessly handle customers of all sizes and volumes, using round-robin data distribution to ensure the onboarding of a large customer does not affect another customers experience.

Inconsistencies

APIs are full of inconsistencies—pagination, authentication, formats, and missing properties. With SmoothIntegration, these challenges are a thing of the past.

Archived Data

APIs handle archiving differently, often requiring effort to track archived data. We’ve built robust solutions to ensure you’re notified when data is deleted. Read More →

Consistent Change Detection

While most APIs support querying by a last updated timestamp, this method is often unreliable and will cause missed changes. SmoothIntegration ensures you never miss an update.

Data Normalisation

We standardize data from all sources—timestamps, monetary values, and more—into a consistent format, ensuring a seamless and reliable experience for you and your users. Read More →

Domain Models

APIs use different models for the same real-world entities. SmoothIntegration unifies them into a single domain model, so you never have to worry about whether an invoice is from QuickBooks, Xero, or MYOB.

Cost Savings

SmoothIntegration does not just help engineers, it helps the business as a whole. We save you money, deliver a higher quality product, in less time.

Reduced Network Costs

Using the SmoothIntegration SDK, data is transferred over a TCP Web Sockets using MessagePack. This reduces network costs by up to 90% compared to traditionally pulling JSON or XML over HTTP.

Save Engineering Time

Our internal estimates show that on average, 30% to 40% of engineering time is spent on building and maintaining API integrations.

Improve Product Quality

Every API has its own set of quirks and shortcomings. Through our experience we have discovered and resolved many of them, so that you and your customers don't have to.

Why SmoothIntegration?

Leverage our extensive integration and fintech experience to build a product that your customers love.
Rely on our battle-tested solutions, providing an amazing experience for you and your customers.

Ship Integrated Products Faster

Write a single integration with SmoothIntegration once and let us handle the rest. Retrieve data in a simple, standardized, and consistent format for many business platforms. Get rid of the complexity of managing and implementing many different integrations yourself.

Designed to be Simple

Built to be incredibly simple to use, you can start pulling in data from your customers in minutes! Leverage our simple event based system and SDK and you won't have to write a single http request yourself. We handle everything from Authentication Flows, Rate Limits, Pagination, and much more.

For businesses of any size

SmoothIntegration is built to handle data in any quantity and any size. For Startups you can simply pull data with a single call. For larger businesses you can use our scalability features to easily consume larger amounts of data. Benefit from our advanced features such as data round-robin to ensure all customers have an equally amazing experience.

Simple Transparent Pricing

A Predictable and Consistent pricing model works for business at any size

Essentials

$15/connection /month

Minimum $100 per month.

Try for free

Up to 50 connections you have:

All Cloud Accounting Integrations
5 Team Seats
All Cloud Integrations

Professional

$25/connection /month

Minimum $500 per month.

Try for free

Everything in free, plus

Unlimited Connections
Unlimited Team Seats
Implementation Support
Compliance Support
Higher API limits

Enterprise

For enterprise customers with more complex needs, we offer custom pricing and support.

*All prices shown are in USD

Experience a Smooth Integration with

Schedule a call using the calendar on the right to request your free trial of SmoothIntegration, no credit card required.