Probe a paid endpoint and report which payment rails it accepts + the price for each — WITHOUT paying.

The neutral rail-discovery layer: one call tells your agent every way it could pay this endpoint, across whatever rails the endpoint offers. Use this before pay_for_resource to see the price/rails.

Pay for and fetch a paywalled resource, returning its content + a settlement receipt.

Routes the payment through the rail the endpoint accepts; never pays more than max_price_usdc. Uses the caller's OWN wallet key from APV0_BUYER_PRIVATE_KEY (non-custodial — this server never holds or sees funds). task is appended as a query param for endpoints that take one.

List EVERY agent-payment rail/protocol Interline knows about + how it relates to each — the neutral catalog.

Separates rails Interline SETTLES natively (route_mode=native-settle: x402, AP2-via-adapter) from protocols it ROUTES you TO but does not settle (route_mode=handoff: Virtuals ACP's own on-chain escrow, OpenAI/Stripe ACP's card-only delegated payment). One call = the whole agent-payment landscape, including the rails we don't move funds on. Pair with discover_payment_rails (what a specific endpoint accepts).

Return the most recent cross-rail settlement receipts — the unified ledger across every rail paid through.