Nango

Nango is an open-source integration platform that lets developers build, run, and maintain product integrations with 700+ APIs using a code-first approach and AI-assisted development. It is built for SaaS engineering teams that need to ship reliable, customer-facing integrations without building custom API connectors from scratch.

At its core, Nango provides three things: a library of 700+ pre-built API connectors with managed OAuth authentication, a TypeScript scripting framework for customizing data transformations, and enterprise-grade sync infrastructure that handles pagination, retries, rate limiting, and incremental data updates automatically. This combination means teams can go from zero to production-ready integrations in days rather than months.

Nango takes a fundamentally developer-centric approach to integrations. Rather than relying on drag-and-drop workflow builders, integrations are written as TypeScript functions that live in your codebase, tracked with git, and deployed through your existing CI/CD pipeline. This means integrations benefit from the same code review, testing, and version control processes as the rest of your application. The platform provides a CLI for local development and testing, including a dryrun command that validates syncs against real API data before deployment.

The platform supports full and incremental data syncing, real-time webhook ingestion, and 2-way sync capabilities. Its managed authentication layer handles the complete OAuth 2.0 lifecycle — initial authorization, secure token storage, automatic refresh, and error recovery — for every supported provider. This alone eliminates what typically accounts for 40–60% of integration development time.

For AI-powered applications, Nango includes a built-in MCP (Model Context Protocol) server and LLM tool calling support, enabling AI agents to discover and invoke integrations through a standardized interface. Developers can also use AI assistants to generate integration scaffolds directly from their IDE, further accelerating development.

Nango's managed cloud infrastructure delivers sub-100ms execution latency, 99.9% uptime, and elastic auto-scaling that handles traffic spikes and webhook floods automatically. Tenant isolation ensures secure, fair execution across customers. For teams that need full control over data residency, the open-source core (7,000+ GitHub stars, Elastic License 2.0) can be self-hosted on your own infrastructure.

Notable production users include Motion (60+ integrations syncing tens of millions of jobs monthly), Replit (30+ integrations with connection triggers), Vapi (inline integrations during live calls requiring sub-100ms latency), and thousands of other companies from startups to enterprises. The platform processes billions of API requests per month across its managed infrastructure.