# Nango > Developer infrastructure for product integrations that lets you integrate your product and AI agents with 500+ APIs. Nango is a developer infrastructure platform designed for building product integrations, enabling teams to authorize and access APIs on behalf of their customers. The platform provides pre-built authentication for over 500 APIs, allowing developers to integrate their products and AI agents with external services using a code-first approach with full control and a powerful SDK. - **API Auth for 500+ APIs** provides embedded, white-label authentication UI with secure credential management, automatic token refreshing, and webhook notifications when credentials become invalid. - **Two-way Syncing** enables continuous data synchronization from external APIs to your application, with support for reading and writing any data with full platform support. - **Request Proxying** seamlessly injects credentials into API requests, eliminating the need to manually handle authentication for each request. - **Actions & Functions** allow you to encapsulate use cases into reusable actions and run custom integration logic in production with auto-scaling infrastructure. - **LLM Tool Calling & MCP Server** exposes your integrations as tools to any LLM or AI agent, making it easy to build AI-powered workflows that interact with external services. - **Webhooks** let you listen to webhooks from any API with a universal interface, simplifying event-driven integrations. - **Observability** provides detailed real-time logs, metrics, and OpenTelemetry integration for full visibility into every interaction with external APIs. - **Local Development** keeps integrations in your codebase, tracked with git, and testable locally using the CLI before deploying to Nango's production infrastructure. To get started, sign up for a free account, install the Nango CLI with `npm i -g nango`, and create your first integration using `nango create`. The platform supports AI-assisted development, allowing you to use any IDE and AI agent to generate integrations. Deploy your integrations with `nango deploy` and Nango handles running them reliably at scale with sub-100ms execution times and automatic scaling for traffic spikes. ## Features - API authentication for 500+ APIs - Two-way data syncing - Request proxying with credential injection - Reusable actions and functions - LLM tool calling and MCP server - Universal webhook handling - Real-time logs and metrics - OpenTelemetry integration - Local development with CLI - AI-generated integrations - Unified APIs - Per-customer configuration - Data validation - Multiple environments - SOC2 Type 2 compliance - SAML SSO support - HIPAA compliance (add-on) - Self-hosting option ## Integrations Google Calendar, Slack, OpenTelemetry, Git ## Platforms WEB, API, DEVELOPER_SDK ## Pricing Open Source, Free tier available ## Links - Website: https://nango.dev - Documentation: https://nango.dev/docs - Repository: https://github.com/NangoHQ/nango - EveryDev.ai: https://www.everydev.ai/tools/nango