What it does
Nango supplies integration infrastructure for software products that connect to external APIs on behalf of their users. Developers can use its authentication flow, proxy, TypeScript functions, scheduled syncs, and webhooks to handle provider-specific credentials and execution. The resulting integrations can be consumed from an application backend or exposed to AI agents through tools and MCP. Nango offers a managed cloud service and self-managed deployment options; it is not itself one of the third-party APIs in its integration catalog.
Connect an account, then keep the integration logic in code
The documented workflow starts by creating an integration and authorizing a user's external account. Nango handles OAuth, API keys, token refresh, scopes, and credential storage. Developers then write or generate TypeScript functions for actions, syncs, or webhook processing and call them from a backend or agent through Nango's API, SDKs, or MCP server. This is useful when a product needs many customer-specific connections but the team still wants code it can inspect, test, and version.
Nango manages retries, rate-limit handling, execution, logs, metrics, and isolated environments. A first project might connect a customer's CRM, synchronize contacts incrementally, and expose selected actions to an agent without putting provider tokens into the agent itself. The catalog lists more than 1,000 APIs, but teams can also write custom integrations when a prebuilt template does not fit.
The pricing page describes a free plan with hard-capped monthly limits, a pay-as-you-go option based on connections, compute time, and data transfer, and custom enterprise terms. Nango also publishes a self-managed codebase. Its repository is licensed under Elastic License 2.0, which restricts offering the software to others as a hosted or managed service; do not assume that the marketing phrase “open source” means unrestricted open-source licensing.
Strengths
- Handles OAuth flows, token refresh, scopes, and credential storage for integrations with many external APIs.
- Lets developers implement custom integration logic as TypeScript functions, with retries, rate-limit handling, logs, and metrics provided by the runtime.
- Supports both hosted use and self-managed deployment, with a free tier for bounded usage.
Watch out for
- Usage-based billing is measured across connections, function compute time, and data transfer; long-running or high-volume integrations need an estimate.
- The repository's Elastic License 2.0 restricts providing the software to third parties as a hosted or managed service, so self-hosting rights are not equivalent to an unrestricted OSI open-source license.
Best for
- SaaS teams connecting each customer's accounts to external business APIs.
- Building incremental data syncs, provider webhooks, and API actions while keeping logic in version-controlled code.
- Giving AI agents scoped access to external services without exposing provider credentials directly.
Sources
- Nango | Build integrations with AI (Oct 26, 2026)
- Introduction - Nango Docs (Oct 26, 2026)
- Pricing | Nango (Oct 26, 2026)
- GitHub - NangoHQ/nango: Connect your agents & product to 1,000 APIs. · GitHub (Oct 26, 2026)
- LICENSE (Elastic License 2.0) | NangoHQ/nango (Oct 26, 2026)