eBay vs Rappi

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.

Rappi's public API lets approved merchant partners manage store menus and orders across its Latin American on-demand delivery platform. Access requires a formal partnership and uses OAuth2 — Authorization Code with PKCE for partner-facing flows, plus Auth0-issued bearer tokens for machine-to-machine calls — confirmed live against its login/token gateway. Each country Rappi operates in runs its own regional API host.