Nango

The platform covers OAuth connection management (authorizing users for third-party providers), sync configurations (scheduled data pulls from connected APIs), the proxy API (making authenticated requests through Nango to any connected provider), and webhook processing. Agents can call any connected provider API through the Nango proxy without managing OAuth tokens directly — Nango injects the correct auth credentials and handles token refresh transparently.

Reliability is appropriate for an integration platform that sits in the path of third-party API calls. Nango's proxy adds a network hop but handles retry logic and token refresh, which can improve the reliability of downstream API calls compared to direct integration. Teams relying on Nango for production integrations should monitor both Nango availability and the reliability of their connected third-party providers.

Nango is an open-source integrations platform that handles the OAuth token lifecycle, data synchronization, and proxied API calls for integrating third-party services. Building integrations typically requires implementing OAuth flows per provider, managing token refresh, handling webhooks, and building sync logic — Nango abstracts all of this infrastructure into a single platform. For agents building features that call third-party APIs on behalf of users (reading a user's calendar, syncing CRM data, posting to social platforms), Nango handles the per-provider auth complexity and provides a unified proxy API.

Authentication to Nango uses secret keys for server-side management and public keys for client-side OAuth flow initiation. The key separation mirrors the backend/frontend split in OAuth integration patterns. Self-hosted Nango deployments require additional infrastructure setup; the cloud version handles the infrastructure.

Documentation is comprehensive and covers the OAuth connection setup, sync configuration, and proxy usage clearly. The integration templates for common providers (GitHub, Salesforce, Google) reduce the setup work for standard integrations. Teams evaluating Nango versus Merge API or Panora for unified integration infrastructure should compare the connector quality for their specific target APIs and the self-hosting option for data residency requirements.