/**
 * Chain-neutral x402 gateway profile helpers.
 *
 * Paid MCP discovery is moving from one Base endpoint to profile documents that
 * describe every supported payment rail, settlement/facilitator boundary,
 * trial/refund policy, and directory manifest path. These helpers validate that
 * profile shape without assuming every x402 payment rail is EVM-compatible.
 */
export type X402NetworkNamespace = 'eip155' | 'solana' | 'tvm' | 'ton' | 'other';
export type X402NetworkDescriptor = {
    network: string;
    name: string;
    gateway: string;
    namespace?: X402NetworkNamespace;
    settlementAsset?: string;
    settlementChainId?: number | string;
    notes?: string;
};
export type X402TrialPolicy = {
    enabled: boolean;
    calls?: number;
    description: string;
};
export type X402RefundPolicy = {
    supported: boolean;
    mode: 'automatic' | 'manual' | 'none';
    description: string;
};
export type X402DirectoryManifests = {
    wellKnownX402: string;
    glama?: string;
    smithery?: string;
    mcpCatalog?: string;
    openapi?: string;
    llmsTxt?: string;
};
export type X402ChainNeutralGatewayProfile = {
    serviceName: string;
    x402Version: number | string;
    paymentHeader: 'Payment-Signature';
    receiptHeader: 'payment-response';
    networks: X402NetworkDescriptor[];
    facilitator?: string;
    settlement: {
        custody: 'non-custodial' | 'facilitator' | 'managed' | 'unknown';
        description: string;
    };
    trial: X402TrialPolicy;
    refund: X402RefundPolicy;
    manifests: X402DirectoryManifests;
};
export type X402ChainNeutralGatewayProfileReport = {
    serviceName: string;
    networkNamespaces: X402NetworkNamespace[];
    hasEvmNetwork: boolean;
    hasNonEvmNetwork: boolean;
    hasDirectoryManifests: boolean;
    hasExplicitTrialPolicy: boolean;
    hasExplicitRefundPolicy: boolean;
    hasSettlementMetadata: boolean;
    issues: string[];
};
export declare function inferX402NetworkNamespace(network: string): X402NetworkNamespace;
export declare function validateX402ChainNeutralGatewayProfile(profile: X402ChainNeutralGatewayProfile): X402ChainNeutralGatewayProfileReport;
export declare function buildAgentPayChainNeutralGatewayProfile(): X402ChainNeutralGatewayProfile;
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