API Integrations

What is an API integration?

An API integration is a programmatic connection between two software systems that lets them exchange data through an API. SaaS products use API integrations so customers can sync data between your product and the other tools they already use — CRM, accounting, HRIS, file storage, ticketing, and more — without manual exports or duplicate data entry. A unified API collapses dozens of provider-specific integrations into a single normalized API, so you build once and ship every connector in the category.

Frequently asked questions

What is an API integration?

An API integration is a connection between two software systems that lets them exchange data through an Application Programming Interface. SaaS products use API integrations so customers can sync data with the other tools they already use — CRM, accounting, HRIS, file storage, ticketing, and more — without manual exports, custom imports, or duplicate data entry.

What are the different types of API integrations?

The four common patterns are point-to-point integrations (one direct integration per provider), embedded iPaaS (workflow tools embedded in your product), embedded marketplaces (showcase third-party integrations users install themselves), and unified APIs (one normalized API that maps to many providers in a category). Each approach makes different trade-offs between speed of delivery, control over the data model, and long-term maintenance burden.

What is a unified API?

A unified API is a single, standardized API that connects to many third-party platforms in the same category through one integration. Instead of building and maintaining a separate integration for QuickBooks, Xero, NetSuite, and dozens of other accounting platforms, developers integrate once with the unified API and get all supported connectors. Apideck offers unified APIs across Accounting, CRM, HRIS, ATS, File Storage, Issue Tracking, ERP, E-commerce, and POS.

How long does it take to build an API integration?

A single direct API integration typically takes 4 to 8 weeks of developer time, including OAuth flows, data mapping, error handling, webhook setup, and ongoing maintenance for breaking changes. Multiplied across 20–50 providers, that quickly becomes a full team. A unified API like Apideck reduces this to days per category, with a single OAuth flow, normalized data model, and one set of webhooks across every supported platform.

What does an API integration cost?

Direct integrations cost developer time (build + maintain) plus opportunity cost when a missing connector blocks a deal. Unified API platforms typically charge per consumer (end-customer connection), per API call, or per linked account, depending on the vendor. Apideck publishes per-consumer pricing starting at $599/month for 25 consumers, with unlimited API calls and unlimited connections per consumer.

What is the difference between API integration and iPaaS?

iPaaS (Integration Platform as a Service) tools like Zapier, Workato, or Tray are aimed at no-code workflow automation between SaaS products end users already own. API integrations and unified APIs are aimed at developers building product-native integrations inside their own SaaS — the integration is a feature their customers experience, not a separate workflow tool. Embedded iPaaS sits in the middle, offering iPaaS-style workflows but white-labeled inside your product.

Are API integrations secure?

A well-built API integration uses OAuth 2.0 for authorization, scoped tokens, encrypted transport (TLS), and audit logging. Apideck is SOC 2 Type II certified and GDPR-compliant, practices data minimization (third-party data is never persisted), and supports Data Scopes for field-level access control so you only request the customer data your product actually needs.

Can AI agents use API integrations?

Yes. Modern API integration platforms expose their endpoints as tools to AI agents through MCP (Model Context Protocol) servers and llms.txt indexes. Apideck operates a hosted MCP server at mcp.apideck.dev that exposes the full Unified API surface as agent-callable tools, so agents can read and write across CRM, accounting, HRIS, and more without you wiring per-provider integrations.