> For the complete documentation index, see [llms.txt](https://metya.gitbook.io/metya/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://metya.gitbook.io/metya/appendices/card-product-specifications.md).

# Card Product Specifications

* Scheme & issuer: Mastercard (default UK issuer), supports Apple Pay / Google Pay.
* Availability: Open / Restricted / Unsupported; country lists and feature flags maintained on the status page.
* Risk rules: BIN/MCC allowlists; frequency/amount caps; step-up KBA/liveness; chargeback handling and arbitration.
* Reconciliation & proofs: Billing cycles, clearing windows, invoice & tax support (merchants file per local law).