This feature is provided by Nango for free, on cloud or self-hosted editions.
Nango’s Proxy simplifies making authenticated requests to external APIs. It’s a tool designed to save you time and reduce complexity in your interactions with APIs.

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Key features

  • Automatic credential injection: Automatically adds necessary authentication to your API requests.
  • Base URL setup: Automatically determines and sets the correct base URL for your API requests.
  • Effortless pagination: Simplifies dealing with API pagination.
  • Logs for debugging: Tracks your requests in the Logs tab for easy debugging.
  • Rate-limit management: Handles rate limits with smart retries (step-by-step guide).
Nango’s proxy is free, whether you are using Nango Cloud or Self-Hosted. It is also open source.

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Use cases

The Proxy is useful to perform any individual request to external APIs, e.g.
  • Fetching data: Great for one-time data retrieval, like getting user metadata.
  • Writing data: Use it to send data back to an API, such as updating a user profile.
Proxy vs. actions The Proxy works for individual API requests, while actions handle more complex scenarios that require multiple requests or data transformations.

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Getting started with the Proxy

Pre-requisite: configure Nango.
Here is an example of how to query external APIs with the proxy, using the SDK (reference) and API (reference): 
try {
    const res = await nango.proxy({
        method: 'POST',
        baseUrlOverride: 'https://api.example.com',
        endpoint: '/external-endpoint',
        providerConfigKey: '<string>',
        connectionId: '<string>',
        retries: 5, // Retries with exponential backoff (optional, default 0)
        data: {
            id: 1,
            colorId: 'blue',
            selected: true
        }
    });

    // Response was 200!
    // See https://axios-http.com/docs/res_schema
    console.log(res.data);
} catch (error) {
    // Status of response != 200
    // See https://axios-http.com/docs/handling_errors
    console.log(error.response.data);
    console.log(error.response.status);
    console.log(error.response.headers);
}
Questions, problems, feedback? Please reach out in the Slack community.