Kateryna Poryvay

API response codes: examples and error-handling strategies

How to handle every HTTP status code your API integration will encounter. From 2xx edge cases to 504 write-operation unknowns, this guide covers retry strategies, idempotency keys, circuit breakers, and structured error logging for accounting and financial integrations.

Vertical SaaS Payments: Why Stripe Connect Isn't Always the Answer

Stripe Connect gets vertical SaaS teams to a working embedded payments flow fast. The problems show up later: economics, reconciliation, and underwriting. When purpose-built alternatives make more sense, and how to pick your payout stack.

Spiris (Visma eAccounting) API Integration Guide (2026)

Spiris (formerly Visma eAccounting) API integration guide for developers. Covers OAuth 2.0 scopes, rate limits, pagination, ROT/RUT invoice handling, and BAS accounts in Sweden. Updated 2026.

How to Create a Shopify Public OAuth App

Step-by-step guide to building a Shopify public OAuth app. Learn OAuth setup, API scopes, access tokens, and how to connect multiple Shopify stores for your SaaS product.

How to Get Your Stripe API Key

Learn how to find and create your Stripe API keys step by step. Understand test vs live keys, security best practices, and how to integrate Stripe data into your application.

How to Create a Stripe App

Create a Stripe App step by step to generate OAuth credentials, connect Stripe to your integration, and sync financial data securely. Learn how to set up your app, retrieve Client ID and Secret, configure redirect URIs, and integrate Stripe with Apideck’s unified Accounting API.

How to Integrate with the Yuki API in 2026

Learn how to integrate with the Yuki API using SOAP webservices. This guide covers authentication, the WebserviceAccessKey flow, all eight webservices, rate limits, batching, and what to watch for when building a Yuki koppeling for multiple customers.

How to Get Your Zoho Books API Key

Learn how to get your Zoho Books API key using OAuth 2.0. This step-by-step guide covers app registration, client setup, scopes, authorization flow, access and refresh tokens, and common mistakes developers should avoid when integrating.

Top Pitfalls of Letting AI Build Your Integrations

AI can speed up building integrations, but production ready integrations are far more complex. This article explores the hidden risks including authentication issues, data mapping errors, security gaps, and maintenance challenges. It shows where AI for building integrations adds value, where it creates blind spots, and how to build reliable, scalable integrations without compromising performance or compliance.

How to integrate with the FreeAgent API

Learn how to integrate with the FreeAgent API using OAuth 2.0. This guide covers authentication, key endpoints, rate limits, pagination, and common integration challenges when building accounting integrations for UK-based businesses.

How to Get Your FreshBooks API Key

Learn how to get your FreshBooks API credentials using OAuth 2.0. This step-by-step guide covers app setup, scopes, authorization flow, token exchange, and common pitfalls developers face when integrating with FreshBooks.

How to Integrate with the Zoho Books API

A complete guide to integrating with the Zoho Books API covering authentication, key endpoints, rate limits, data mapping, and common pitfalls. Learn how to build a reliable integration or simplify the process using a unified API.

How to Integrate with the MYOB API

Learn how to integrate with the MYOB API, including OAuth setup, March 2025 auth changes, company file GUIDs, rate limits, endpoints, and AccountRight Classic deprecation.

How to Integrate with the FreshBooks API

Learn how to integrate with the FreshBooks API, including OAuth 2.0 authentication, account and business IDs, key endpoints, pagination, webhooks, and common integration pitfalls.

Apideck as an Agave Alternative

Evaluating Apideck as an alternative to Agave for software vendors who need accounting and ERP integrations. Covers connector coverage, build vs. buy trade-offs, and who each platform works best for.

ERP Integrations for Vertical SaaS

A comprehensive guide to ERP integration for vertical SaaS, covering why it matters, how it works across different industries, and how to architect it. The article breaks down the three main approaches — native build, unified API, and embedded iPaaS — and explains how it functions as a product strategy decision, a deal unlocker, and a long-term competitive advantage.

Accounting Software Integration: Architecture, Trade-offs, and Costs for SaaS Teams

A practical guide to accounting software integration for SaaS teams covering architecture choices real costs build vs buy decisions and how to scale integrations without wasting engineering time or budget.

Unified.to Alternatives: A Technical Overview for 2026

A technical comparison of Unified.to alternatives for 2026, examining its architecture alongside platforms like Apideck, Merge, Codat, Nango, and Plaid, with guidance on matching platform capabilities to your integration requirements.

NetSuite Integration Guide

In this deep dive, we break down what NetSuite integration actually looks like in production, from sync patterns and API options to governance limits, concurrency constraints, and the real issues teams run into at scale. With architecture principles, clear decision frameworks, and hands on implementation tips, you’ll walk away with a practical blueprint for building NetSuite integrations that are reliable, secure, and built to handle growth.

Rutter Alternatives: A Technical Evaluation for 2026

Evaluating Rutter alternatives? Learn which unified API platforms offer deeper accounting integrations, real-time passthrough data access, zero-storage compliance advantages, and transparent pricing models—plus which option fits your roadmap best.

7 Best Codat Alternatives for 2026: A Technical Comparison

This article breaks down why teams outgrow Codat and which alternatives actually fix the real pain points, such as stale data, async writes, limited scope, and unpredictable pricing. You’ll get a clear technical comparison of 7 platforms, showing exactly when each one makes sense and when it doesn’t. If you’re building beyond basic accounting or need real-time, scalable integrations, this will save you weeks of wrong decisions.

The Complete Guide to Accounting API Integrations for Fintech

Accounting APIs sit at the core of modern fintech products, and getting them wrong creates reliability, trust, and compliance risks. This guide covers the architecture, authentication, data modeling, sync strategies, and scaling patterns required to build robust, production-grade accounting integrations for fintech.

12 Best Practices for Accounting Integrations in Vertical SaaS

Accounting integrations fail when teams underestimate domain workflows, platform differences, and long-term maintenance costs. This article outlines the most common failure points in vertical SaaS accounting integrations and the engineering best practices that prevent data drift, rework, and ongoing operational overhead.

Unified APIs for Fintech: When Data Aggregators Stop Scaling

Direct integrations work until maintenance costs outpace development. Learn when fintech teams should shift from building custom connections to leveraging data aggregators and unified APIs for scalable integration infrastructure.

Top Embedded iPaaS Solutions in 2025

This article breaks down the top embedded iPaaS platforms in 2025 and compares how they handle developer experience, extensibility, scalability, and real-world deployment. It explains when embedded iPaaS makes more sense than unified APIs, what technical advantages it brings, and helps SaaS teams choose the right platform based on their product’s integration needs.

Top Merge API Alternatives for SaaS Teams in 2026

This article gives a technical breakdown of the best Merge API alternatives, comparing architecture, pricing, performance, and developer experience across platforms like Apideck, Paragon, Unified.to, and others. Get the technical details you need to choose the right platform for your stack.

Top Benefits of Unified APIs

Discover how Unified APIs are transforming the way SaaS companies build and scale integrations. This article breaks down the hidden costs of traditional integrations, shows how Unified APIs cut development time by up to 80%, and explains how they unlock scalability, security, and innovation. Learn how to free your engineering team from endless maintenance and accelerate product growth.

Why an Integration Platform Beats Point-to-Point SaaS Integrations

Point to point integrations seem easy at first but quickly turn into a maintenance nightmare. This article reveals why an integration platform is the smarter, scalable path for SaaS companies that want to grow.

ERP Integration for Fintech and SaaS: Connecting QuickBooks, NetSuite, and Sage the Smart Way

This guide explains why ERP integration is critical for fintech and SaaS platforms and why it’s often such a bottleneck. You’ll learn the key challenges of connecting QuickBooks, NetSuite, and Sage, common pitfalls that derail projects, best practices for implementation, and how unified APIs can simplify integrations, cut costs, and speed up time to market.

Top 15 Accounting APIs to Integrate with in 2026

Building SaaS in 2026? The right accounting API can make or break your product. This article breaks down the 15 APIs that matter most—what they’re best at, key features, and real-world use cases. Plus, the trends shaping integrations this year. A must-read for anyone serious about scaling with seamless financial workflows.

Top API Integration Tools in 2026

This article breaks down API integration tools, from iPaaS to unified APIs and marketplaces, showing how they save months of development, cut complexity, and help companies scale faster. With real-world examples, it’s a clear guide to choosing the right tool for your business growth.

A Guide to HRIS Integrations: Best Practices, Use Cases, and Trends for 2026

HRIS integrations eliminate manual data entry, errors, and compliance risks by connecting HR platforms with payroll, benefits, and other business systems. This guide covers best practices, use cases, the trends shaping 2026, and shows how unified APIs make integrations faster, scalable, and easier to maintain.

How to Get Your Gemini API Key

This guide walks you through everything from creating your API key in AI Studio to testing your first request, setting up restrictions, and preparing for production on Google Cloud. A clear, practical walkthrough for developers who want to get started fast and securely.

How to Get Your Grok (XAI) API Key

Unlock the power of xAI with our complete guide to getting your Grok API key. Follow these step-by-step instructions to subscribe, generate, and test your key today.

How to Get Your Perplexity API Key

This guide walks you through how to get your Perplexity API key and start building with it. From there, it explains the must-know compliance rules and best practices, like showing citations, respecting source policies, handling rate limits, and caching responses, so you can use the API securely and effectively.

How to Get Your ChatGPT (OpenAI) API Key

This step-by-step guide walks you through everything from creating your account to generating and securing your first API key, setting up billing, and testing your integration.

How to Simplify SaaS Integrations

Most companies run on 100+ SaaS tools, but the real problem isn’t the apps, it’s the gaps between them. This guide shows you how to simplify integrations step by step: from mapping data flows to choosing the right tools, avoiding costly pitfalls, and scaling without drowning your developers in maintenance.

From Accounts Receivable to Lending Automation: Integration Use Cases for Vertical SaaS

Building and maintaining dozens of integrations is draining engineering teams at vertical SaaS and fintech companies. This article breaks down why point-to-point integrations don’t scale, the hidden costs they create, and how a unified API layer can turn months of work into days, freeing teams to focus on product innovation.

Legacy and Established ERP Platforms

Outdated ERPs drain resources and slow growth, while competitors move faster with modern systems. This article explores the hidden costs of legacy platforms, the strengths and trade-offs of established leaders like SAP, NetSuite, and Dynamics, and what’s coming next with AI-native ERPs built for speed, automation, and seamless integration.

Next-Gen ERPs and the Future of Enterprise Systems

Traditional ERPs demand long, costly implementations—but a new generation is rewriting the rules. In this article, we explore how AI-native platforms like Odoo, DualEntry, Digits, Rillet, Tailor, and Campfire deliver automation and natural language queries.

Apideck Wins API World 2025 Award for Best Business Software API

Apideck has been named Best Business Software API at the API World 2025 Awards. In this article, we share what the award means for the industry, how unified APIs are reshaping software development, and why this recognition matters for our customers.

How To Integrate Sage Business Cloud Accounting API

This article covers the essentials of using Sage's free, RESTful API, including OAuth 2.0 authentication, mapping data to key endpoints like contacts and invoices, and handling errors.

Build vs Buy Accounting Integrations

Struggling with accounting API integrations? Learn why building your own can drain engineering resources, delay product development, and introduce compliance risks and why unified APIs are emerging as the superior alternative.

Merge and Apideck Pricing Compared

In this deep dive, we break down Merge’s per-linked-account pricing vs. Apideck’s consumer-based model and show why the difference matters once customers start connecting multiple systems. With clear plan-by-plan comparisons, real scaling scenarios, and total cost math, you’ll see how each model impacts cost predictability, integration breadth, and long-term unit economics, so you can choose the pricing structure that won’t punish growth.