type X402CompletionMode = 'fragment';
type X402AssetPolicy = {
    asset?: string;
    address?: string;
    assetKey?: string;
    tokenId?: string;
    decimals?: number;
};
type X402RequirementSelectionOptions = {
    scheme?: string;
    networks?: string[];
    assets?: X402AssetPolicy[];
    defaultDecimals?: number;
    requirePayTo?: boolean;
};
type HazbaseX402Requirement = {
    scheme: string;
    network: string;
    paymentRequestId: string;
    resource: string;
    description?: string;
    mimeType?: string;
    payTo: string;
    asset: string;
    assetKey?: string;
    amountAtomic: string;
    amountFormatted: string;
    decimals: number;
    maxTimeoutSeconds?: number;
    raw: Record<string, unknown>;
};
type HazbaseX402Request = {
    paymentRequestId: string;
    sourceUrl: string;
    pageTitle?: string;
    completionMode?: X402CompletionMode;
    completionParam?: string;
    bridgeRequestId?: string;
    detectedAt: string;
    requirement: HazbaseX402Requirement;
};
type SummarizeX402RequestContext = {
    sourceUrl: string;
    pageTitle?: string;
    detectedAt?: string;
};
type ReadX402RequestOptions = X402RequirementSelectionOptions & {
    handoffStoragePrefix?: string;
};
type ResolveX402RequestOptions = ReadX402RequestOptions & {
    fetcher?: typeof fetch;
};
declare function isX402RequestExpired(request: Pick<HazbaseX402Request, 'detectedAt' | 'requirement'>, nowMs: number, options?: {
    minTtlSeconds?: number;
    maxTtlSeconds?: number;
}): boolean;
declare function parseX402ResponseBody(input: string): Record<string, unknown> | null;
declare function summarizeX402Request(x402: Record<string, unknown>, context: SummarizeX402RequestContext, options?: X402RequirementSelectionOptions): HazbaseX402Request | null;
declare function readX402RequestFromUrl(input?: string, options?: ReadX402RequestOptions): HazbaseX402Request | null;
declare function resolveX402RequestFromUrl(input?: string, options?: ResolveX402RequestOptions): Promise<HazbaseX402Request | null>;
declare function selectX402Requirement(x402: Record<string, unknown>, options?: X402RequirementSelectionOptions): Omit<HazbaseX402Requirement, 'paymentRequestId'> | null;
declare function encodeX402ForUrl(x402: Record<string, unknown>): string;
declare function decodeX402Param(input: string): string | null;
declare function parseJsonRecord(input: string): Record<string, unknown> | null;
declare function safeCompletionParam(value: string | null): string | null;
declare function base64UrlEncode(value: string): string;

export { type HazbaseX402Request, type HazbaseX402Requirement, type ReadX402RequestOptions, type ResolveX402RequestOptions, type SummarizeX402RequestContext, type X402AssetPolicy, type X402CompletionMode, type X402RequirementSelectionOptions, base64UrlEncode, decodeX402Param, encodeX402ForUrl, isX402RequestExpired, parseJsonRecord, parseX402ResponseBody, readX402RequestFromUrl, resolveX402RequestFromUrl, safeCompletionParam, selectX402Requirement, summarizeX402Request };