/**
 * @fileoverview Server-specific environment variable configuration for the USGS Water MCP server.
 * @module config/server-config
 */
/** Registration reads only the opt-in flag; setup reports invalid configuration. */
export declare function isDataframeDropEnabled(): boolean;
/** Returns the parsed server-specific configuration, lazily initialized. */
export declare function getServerConfig(): {
    userAgent: string;
    requestTimeoutMs: number;
    dataframeDropEnabled: boolean;
};
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