Struct PaymentConfig 

pub struct PaymentConfig {
    pub scheme: String,
    pub key: String,
    pub pay_network: String,
    pub asset: String,
    pub max_amount: String,
    pub svm_rpc_url: Option<String>,
    pub base_url_override: Option<String>,
}

Binding-facing crypto-micropayment configuration. Plain data — all fields are strings so this can be a napi(object) / pyclass / Ruby hash; it is converted to the internal enum Signer + resolved config at the Rust boundary. The private key field stays readable to the caller, but the SDK’s own Debug redacts it (below) so an SDK log line or panic can’t leak it.

Do not log your own PaymentConfig — println!("{config:?}") on the derived-Debug binding object (napi/pyclass/hash) still shows the raw key. Only the SDK’s internal rendering is redacted.

Fields

scheme: String

Payment protocol: "x402" (pay-per-request) or "mpp" (MPP charge).

key: String

Raw private key. EVM/Tempo: hex (with or without 0x). Solana: base58 64-byte secret key.

pay_network: String

CAIP-2 pay network selector, e.g. "eip155:84532" (x402/EVM), "solana:5eykt4…" (x402/Solana), or "eip155:42431" (MPP/Tempo).

asset: String

Asset (token) address/mint to pay in. Matches the offered menu entry’s asset. EVM: token contract hex. Solana: mint base58.

max_amount: String

Spend ceiling in base units of asset (integer string). Required. The selector skips any offered entry above this, and the driver refuses to sign one — guarding against a buggy/hostile gateway overcharging a custodied key.

svm_rpc_url: Option<String>

Explicit Solana RPC URL for x402/Solana payment-build reads: the mint (for its decimals and owning token program) and a recent blockhash, so two reads per payment. Optional; when unset the SDK falls back to a public Solana RPC matching the pay cluster. Set this at any real volume — the public default rate-limits aggressively.

base_url_override: Option<String>

Test-only gateway base override (points the lane at a mock gateway).

Trait Implementations

impl Clone for PaymentConfig

fn clone(&self) -> PaymentConfig

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PaymentConfig

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for PaymentConfig

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for PaymentConfig

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.