import { type MerchantRegistry } from "./merchants.js";
import { type AcceptSpec } from "./networks.js";
export type X402Environment = "development" | "production";
export interface TollgateConfig {
    port: number;
    upstreamUrl: string | undefined;
    /**
     * Shared secret for post-payment upstream trust headers
     * (`UPSTREAM_SHARED_SECRET` or `X402_UPSTREAM_SECRET`).
     * When set, tollgate injects `X-Tollgate-Secret` / `X-Tollgate-Paid` after settle.
     * Upstream must require these and reject public direct hits. Not mTLS.
     */
    upstreamSharedSecret: string | undefined;
    payTo: `0x${string}` | undefined;
    price: string;
    /**
     * Primary CAIP-2 network (first settle / CREATE2 asset default).
     * Always equal to `networks[0]` after load when NETWORKS drives the list.
     */
    network: string;
    /**
     * Networks from `NETWORKS` / `NETWORK` (EVM + optional Solana).
     * Default: single Base Sepolia (dev) or Base (prod) — Render-safe.
     */
    networks: string[];
    /**
     * Active 402 `accepts[]` specs (network × asset). From `ACCEPTS_JSON` or
     * `NETWORKS` × `ASSETS` (default USDC only). Never includes TRON/planned.
     */
    accepts: AcceptSpec[];
    environment: X402Environment;
    /** Path prefix that requires payment (e.g. `/v1`). Empty string gates everything except free paths. */
    gatedPrefix: string;
    cdpApiKeyId: string | undefined;
    cdpApiKeySecret: string | undefined;
    /**
     * Public CDP client / project API key for browser Smart Wallet paywall UX.
     * Safe to expose to the browser; never put `CDP_API_KEY_SECRET` here.
     */
    cdpClientApiKey: string | undefined;
    /**
     * WalletConnect Cloud project id for browser paywall (public).
     * When set, paywall injects WalletConnect alongside Smart Wallet / injected.
     */
    walletConnectProjectId: string | undefined;
    /**
     * Enable `@x402/paywall` SVM handler when Solana appears in accepts
     * (or force with PAYWALL_SVM=true). Off by default.
     */
    paywallSvm: boolean;
    /** Solana receive address for experimental SVM accepts (base58). */
    solanaPayTo: string | undefined;
    /** True when CDP facilitator credentials + pay-to are present. */
    useLiveFacilitator: boolean;
    /**
     * Optional CDP / alternate x402 facilitator base URL
     * (`X402_FACILITATOR_URL` or `CDP_FACILITATOR_URL`).
     * Applied to MCP `createCdpFacilitatorClient({ baseUrl })`. HTTP live
     * `createX402Server` still uses the CDP default until the SDK exposes an
     * override — no multi-facilitator routing engine yet.
     */
    facilitatorUrl: string | undefined;
    /**
     * Public https origin for Bazaar resource URLs (no trailing slash).
     * Without this, demos use http://127.0.0.1:PORT — Bazaar listing is a no-op until set + one CDP settlement.
     */
    publicBaseUrl: string;
    /** Contact mailto on the landing page (not a SaaS CTA). */
    contactEmail: string;
    /**
     * Operator fee in basis points (default 10 = 0.1%).
     * Documented for FeeSplitter deploy; live CDP settle still pays 100% to `payTo`.
     */
    feeBps: number;
    /**
     * Fixed operator feeCollector wallet (default OPERATOR_FEE_COLLECTOR).
     * Each merchant FeeSplitter uses seller=merchant wallet, feeCollector=this address.
     */
    feeCollector: `0x${string}`;
    /** merchantId → FeeSplitter payTo + seller for display. Loaded at startup. */
    merchants: MerchantRegistry;
    /** Default merchant id when query/header omitted (env DEFAULT_MERCHANT, default `demo`). */
    defaultMerchant: string;
    /**
     * When true, gated paths require an explicit `?merchant=` / `x-merchant-id`
     * (no DEFAULT_MERCHANT fallback). Off by default — agents SHOULD send merchant id.
     */
    requireMerchant: boolean;
    /** Gateway PAYMENT-SIGNATURE dedupe TTL (ms). CDP facilitator remains source of truth for EIP-3009 nonce. */
    paymentDedupeTtlMs: number;
    /** Max fingerprints kept in the in-memory dedupe LRU. */
    paymentDedupeMaxEntries: number;
    /**
     * Local / facilitator verify budget (ms). Documented separately from settle;
     * the gateway settle waiter uses `settleTimeoutMs`.
     */
    verifyTimeoutMs: number;
    /**
     * Max time to wait for facilitator / on-chain settle before returning
     * `202 payment_pending` + `retry_with_same_proof` (ms). Default 3 minutes.
     */
    settleTimeoutMs: number;
    /**
     * Permissionless seller EOA (env SELLER / X402_SELLER).
     * When set, gated payTo uses resolvePayTo(amount, seller) unless ?merchant= hits the registry.
     */
    seller: `0x${string}` | undefined;
    /**
     * USDC atomic threshold: amount < this → payTo = seller (0 protocol fee).
     * Default 10_000_000 ($10). Amount ≥ threshold → CREATE2 FeeSplitter.
     * Env: `FEE_FREE_BELOW_USDC` or `X402_FEE_FREE_BELOW_USDC`.
     */
    feeFreeBelowUsdc: bigint;
    /**
     * FeeSplitterFactory for primary `network` (CREATE2 predict ≥ threshold).
     * Live Base reference: `contracts/deployments/base.json`.
     */
    factoryAddress: `0x${string}` | undefined;
    /**
     * Optional per-CAIP-2 factory map (`FACTORY_ADDRESSES` JSON + `FACTORY_ADDRESS`).
     * Other chains are config-ready stubs until an operator deploys.
     */
    factoryAddresses: Record<string, `0x${string}`>;
    /**
     * Static minimum accept amount in atomic USDC (`X402_MIN_PRICE_USDC`).
     * 0 = unset (use PRICE only, unless dynamic gas floor bumps).
     */
    minPriceUsdc: bigint;
    /**
     * When true, Base gas oracle may raise effective min price / feeFreeBelow
     * if estimated gas exceeds `gasCostMaxFraction` of the payment. Default OFF.
     */
    dynamicMinEnabled: boolean;
    /** Max gas-cost / payment ratio before bumping (default 0.5). */
    gasCostMaxFraction: number;
    /** Public Base JSON-RPC for baseFee (cached). */
    gasOracleRpcUrl: string;
    /** Base-fee cache TTL ms (clamped 15–60s). */
    gasOracleTtlMs: number;
    /** Rough L2 gas units for settle estimate. */
    gasUsedEstimate: number;
    /** Conservative ETH/USD floor for gas→USD (no live FX required). */
    ethUsd: number;
}
export declare function loadConfig(env?: NodeJS.ProcessEnv): TollgateConfig;
/**
 * Free HTTP paths that never require x402 payment (MCP has its own payment loop).
 * `/merchants` and `/v1/merchants` are free registry listing endpoints.
 * `/x402/discover` (+ `/discover` alias) is the agent-readable yellow pages catalog.
 */
export declare const FREE_PATHS: Set<string>;
export declare function isFreePath(path: string): boolean;
export declare function isGatedPath(path: string, gatedPrefix: string): boolean;
export declare function gatedRoutePatterns(gatedPrefix: string): string[];