Loop Returns

🚀 Quickstart
🔗 Useful links
🚨 API gotchas

Create an integration

In Nango (free signup), go to Integrations -> Configure New Integration -> Loop Returns.

Authorize Loop Returns

Go to Connections -> Add Test Connection -> Authorize, then enter your Loop Returns API key. Later, you’ll let your users do the same directly from your app.

Call the Loop Returns API

Let’s make your first request to the Loop Returns API (return a detailed list of returns created within the last 24 hr). Replace the placeholders below with your secret key, integration ID, and connection ID:

cURL
Node

curl "https://api.nango.dev/proxy/v1/warehouse/return/list" \
  -H "Authorization: Bearer <NANGO-SECRET-KEY>" \
  -H "Provider-Config-Key: <INTEGRATION-ID>" \
  -H "Connection-Id: <CONNECTION-ID>"

Install Nango’s backend SDK with npm i @nangohq/node. Then run:

import { Nango } from '@nangohq/node';

const nango = new Nango({ secretKey: '<NANGO-SECRET-KEY>' });

const res = await nango.get({
  endpoint: '/v1/warehouse/return/list',
  providerConfigKey: '<INTEGRATION-ID>',
  connectionId: '<CONNECTION-ID>'
});

console.log(JSON.stringify(res.data, null, 2));

Or fetch credentials dynamically via the Node SDK or API.

✅ You’re connected! Check the Logs tab in Nango to inspect requests.

Next step: Embed the auth flow in your app to let your users connect their Loop Returns accounts.

Topic	Links
Authorization	Guide to connect to Loop Returns using Connect UI
General	Loop Returns Website
	Loop Returns Dashboard
Developer	Loop Returns API Documentation
	Generate an API Key in your Loop Returns account
	API Key authentication
	API reference
	API rate limiting

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