Crate r402_client

Expand description

Buyer register, select, and spendControls for the x402 payment protocol.

Structs§

CreatedPayment: Result of successful payment creation (transport-agnostic).
DefaultAssetInfo: USD-pegged default asset used for money strings and client spend caps.
FirstMatch: PaymentSelector that returns the first candidate.
MaxAmount: PaymentSelector that rejects candidates whose amount exceeds the budget.
MaxAmountPolicy: Keeps only candidates whose amount is at most the configured bound.
NetworkPolicy: Keeps only candidates whose chain matches one of the patterns.
PaymentCandidate: One payment option produced by SchemeClient::accept.
PaymentClient: Buyer payment client.
PaymentCreationContext: Context for payment-creation hooks.
PaymentResponseContext: Context delivered after a paid request completes.
PaymentResponseResult: Result of ClientHooks::on_payment_response.
PreferChain: PaymentSelector that prefers chains matching one of the given patterns.
SchemePolicy: Keeps only candidates whose scheme name is in the allow-list.
SpendControlAsset: Opt-in asset for AllowedAssets::List.
SpendControls: Client spend controls enforced before policies.

AllowedAssets: Opt-in non-default assets for SpendControls.
FailureRecovery: Outcome returned by “on failure” hooks.
HookDecision: Decision returned by “before” hooks to control whether the operation proceeds.
MaxAmountPerPayment: Per-payment USD cap on assets find_default_asset recognizes.

ClientExtension: Client-side extension. Copy of the crate::ClientHooks / DynClientExtension split: RPITIT is not object-safe, so stored values are DynClientExtension.
ClientHooks: Lifecycle hooks for the payment client.
DynClientExtension: Object-safe erasure of ClientExtension.
DynClientHooks: Object-safe erasure of ClientHooks.
PaymentCandidateSigner: Object-safe signer carried by each PaymentCandidate.
PaymentPolicy: Filter applied to the candidate list before selection.
PaymentSelector: Selector that picks the best candidate from a slice.
SchemeClient: Buyer-side scheme: emit candidates from a 402 challenge.