import { type H3Event } from "h3";
export interface MissingKeyResponse {
    error: "missing_api_key";
    key: string;
    label: string;
    message: string;
    settingsPath: string;
}
export declare function requireEnvKey(event: H3Event, key: string, label: string, options?: {
    message?: string;
    settingsPath?: string;
}): MissingKeyResponse | null;