Invoket

Payments and rails

A rail is a way to settle a call: an asset on a given network. A single endpoint often accepts several rails; you pick the one you can pay.

Source of truth: /catalog

The rails, assets and prices are never hardcoded in this site: they come from the gateway’s living catalog, /catalog (Bazaar x402 format). When in doubt, the catalog is authoritative.

Atomic amount vs USD price

Each rail exposes an amount in the asset’s atomic unit — its smallest indivisible unit:

  • for USDC (6 decimals), amount: “5000” = 0.005 USDC;
  • for an 18-decimal asset (e.g. WETH), the atomic amount is much larger for the same value.

The commercial price in USD is provided separately in the endpoint’s metadata (priceUsd) and shown as-is on the home page. The atomic amount is used for payment; the USD price is there for readability.

Typical rails

The rails actually available depend on the catalog. You commonly find stablecoins and assets across several networks (for example USDC on Base and Solana). The up-to-date list is always the one from /catalog and the listing on the home page.