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

Free Trial

Take a free test drive. Experience how simple integrating should be!

Up to 2 Companies
Up to 5 Data Sources
Up to 10,000 Records
Up to 5 Integrations
1 Active Data Socket

Get started

Essentials

Perfect for those just starting, in-house solutions or hobby projects.

$49/month

Up to 5 Companies
Up to 20 Data Sources
Up to 200,000 Records
Up to 5 Integrations
1 Active Data Socket

Get started

Pro

For Professional projects with higher production demands.

$499/month

50% off for startups! Read More →

Up to 100 Companies
Unlimited Data Sources
Up to 5,000,000 Records
All Integrations
Up to 5 Active Data Sockets

Get started

$250/month for an additional
50 Companies & 2,500,000 Records

Enterprise

For enterprises with more complex needs.

Enterprise

Unlimited Companies
Unlimited Data Sources
Unlimited Records
Unlimited Active Data Sockets
All Integrations
On Premise Integrations
Priority Support

Contact Sales

Experience a Smooth Integration with

Fill in this form and we will provide your Organisation & API key to get started and try for free!

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.

Features.

Simple Transparent Pricing

Free Trial

Essentials

Pro

Enterprise