/**
 * Soft revenue nudge after a free first call, and agent-actionable
 * payment_required copy. Dependency-free so the gateway, MCP client,
 * and wording tests share one source.
 */
export declare const APICLAW_UPGRADE_URL = "https://apiclaw.cloud/upgrade";
export declare const FIRST_CALL_REVENUE_NUDGE_MESSAGE = "First call landed. Free APIs stay free. For paid APIs (e.g. OpenRouter chat), add a card once at https://apiclaw.cloud/upgrade (provider cost + 15%), then retry.";
export declare const PAYMENT_REQUIRED_MESSAGE = "You've used the free managed allowance. Add a card at https://apiclaw.cloud/upgrade, then retry this same call. You pay the provider cost plus 15 percent, with no subscription fee.";
export type FirstCallRevenueNudge = {
    kind: "add_payment_method";
    message: string;
    upgradeUrl: string;
};
export declare function workspaceHasPaymentMethod(workspace: {
    hasPaymentMethod?: boolean | null;
    hasCardAttached?: boolean | null;
}): boolean;
/**
 * Attach once, on a newly recorded first_call success, only when this
 * call was free/activation and the workspace has no card. A card on file
 * means the customer does not need another card prompt here; exact PAYG
 * activation is still verified independently by the gateway.
 */
export declare function firstCallRevenueNudge(input: {
    firstCallRecorded: boolean;
    hasPaymentMethod: boolean;
    billingClass?: string | null;
}): FirstCallRevenueNudge | null;
export declare function attachFirstCallRevenueNudge<T extends Record<string, unknown>>(payload: T, nudge: FirstCallRevenueNudge | null): T;
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