CardNexus Public API

The CardNexus Public API provides programmatic access to the CardNexus marketplace and catalogue — games, expansions, and products across Magic: The Gathering, Pokémon, One Piece, and the other games CardNexus supports, plus your own inventory, listings, and orders.

Base URL and versioning

All endpoints sit under /v1. The production base URL is https://public-api.cardnexus.com/v1.

Authentication

Every request carries a single bearer token (an API key) in the Authorization header. See Authentication and API keys.

Guides

Start with the Quickstart. The full documentation hub has guides and recipes for every part of the API.