The API Report CardAPI Index
Loop Returns

Loop Returns API

E-commerce / Post-Purchase · loopreturns.com

Loop publishes REST APIs at docs.loopreturns.com: Returns, Listings, Cart, and a programmatic Webhooks API. Brands generate API keys free in the admin Developer Tools, with no sales gate. Loop warns it may add response fields without notice, so clients must parse leniently.

Last verified: July 2026Retail & Ecommerce
API GRADE
B+
VERIFIED JUL 2026

SCORECARD

ExistenceGOODPublic REST docs cover four surfaces: Returns, Listings, Cart, and a programmatic Webhooks API.
AccessGOODBrands self-generate keys in Loop Admin Developer Tools for free; no sales or partner gate.
CoverageGOODRMA generation, ASN reports, return processing, fraud blocklists, exchange carts, and webhook CRUD.
AuthGOODAPI-key auth via the X-Authorization header, managed from the admin Developers Page.
Docs & DXGOODHosted docs at docs.loopreturns.com plus an admin Developers Page for keys and webhook configuration.
StabilityGOODThe change policy is explicit: new response fields can appear anytime, so clients should ignore unknown fields.
MORE FROM THE REPORT CARD
Supergood: Loop Returns shipped a real API. Most vendors don't; we ship near-native APIs for the rest.

Frequently asked questions

Loop Returns scores B+ on the API Report Card. Loop publishes REST APIs at docs.loopreturns.com: Returns, Listings, Cart, and a programmatic Webhooks API. Brands generate API keys free in the admin Developer Tools, with no sales gate. Loop warns it may add response fields without notice, so clients must parse leniently.

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