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What is Nango?

Nango is an open-source platform for building product integrations. It supports 700+ APIs and works with any backend language, AI coding tool, and agent SDK. You write integration logic as TypeScript functions — or let AI generate them — and deploy to Nango’s production runtime. Nango handles auth, execution, scaling, and observability so you ship integrations in minutes, not weeks. Used in production by Replit, Ramp, Mercor, and hundreds more.

Quickstart

Authorize an API and make your first request in under 5 minutes.

Core concepts

Understand providers, integrations, connections, and Nango’s three primitives.

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How it works

Nango gives you three primitives that cover every integration pattern:
1

Auth

Embed a white-label, managed auth flow in your app. Nango handles OAuth, API keys, token refresh, and credential storage for 700+ APIs. You never deal with auth plumbing again.
// Embed in your frontend — Nango handles the rest
nango.openConnectUI({ onEvent: (event) => { /* handle completion */ } });
2

Proxy

Make authenticated API requests on behalf of your users. Send requests through Nango’s proxy — it resolves the provider, injects credentials, handles retries and rate limits, and returns the response.
import { Nango } from '@nangohq/node';

const nango = new Nango({ secretKey: process.env.NANGO_SECRET_KEY });

const response = await nango.get({
  endpoint: '/v3/contacts',
  providerConfigKey: 'hubspot',
  connectionId: 'user-123'
});
3

Functions

Write integration logic as TypeScript functions and deploy them to Nango. Functions execute on a production runtime with built-in API access, retries, storage, and observability. Use the AI builder to generate them from a description of your use case.
export default async function run(nango: Nango) {
  const { owner, repo, title, body } = nango.input;

  const response = await nango.post({
    endpoint: `/repos/${owner}/${repo}/issues`,
    data: { title, body }
  });

  return response.data;
}

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What you can build

AI tool calling & MCP

Give AI agents the ability to act on external APIs.

Data syncing

One or two-way sync for RAG pipelines, indexing, and triggers.

Webhook processing

Receive and process webhooks from external APIs reliably.

API unification

Normalize multiple APIs to your own universal schema.

Actions

Write data and execute operations on behalf of your users.

Per-customer config

Customize integration behavior for each of your customers.

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Why Nango?

AI-generated, human-controlled code. Nango’s AI builder generates TypeScript integration functions from natural language. Unlike black-box solutions, you get readable code you can review, edit, and version control — with full type safety and a built-in testing framework. Production-grade infrastructure. Nango processes billions of API requests. The runtime provides per-tenant isolation, elastic scaling, automatic retries, and rate-limit handling. Battle-tested by hundreds of companies in production. Auth for 700+ APIs, out of the box. OAuth flows, token refresh, credential storage, and multi-tenant support are handled for you. Connect to any API without building auth from scratch. Open source and self-hostable. Nango is fully open source. Run it on Nango Cloud or self-host on your own infrastructure. SOC 2 Type II, HIPAA, and GDPR compliant. Fits your workflow. Fully operable via CLI and API. Compatible with any backend language or framework, AI coding tools (Cursor, Codex, Claude Code), and agent SDKs (MCP, LangChain).

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Get started

Quickstart

Authorize an API and make your first request in under 5 minutes.

Auth guide

Embed managed auth for 700+ APIs in your product.

Functions guide

Write and deploy TypeScript integration functions.

AI builder

Generate integration code with AI.

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