eBay vs Lazada

eBay's REST platform — Browse, Sell, and related APIs — requires an OAuth2 client-credentials or authorization-code token, confirmed live by a standard invalid_client error from its token endpoint, and is built for server-side integration rather than in-browser calls. New developer accounts get a free daily call allowance with no published paid tier, and higher volume comes from an approval process rather than a fee.

Lazada's Open Platform gives registered sellers and partners programmatic access to product, order, and seller-performance data across its Southeast Asian marketplaces. Every call must carry an HMAC-SHA256 signature derived from an app key/secret pair rather than a plain bearer token, confirmed live by a MissingParameter error demanding the app_key. Access requires an approved developer application tied to an active Lazada seller account, at no separate charge.