/**
 * Claude keeps a tool result longer than about 150,000 characters out of the
 * conversation, and its app then never receives it.
 */
export declare const MAX_INLINE_RESULT_CHARS = 120000;
/** What the server did with a result's app data, for the logs. */
export interface AppDataReport {
    /** "inline" in the result's `_meta`, or "too_large" for it, even simplified. */
    delivery: "inline" | "too_large";
    json_chars: number;
    inline_chars?: number;
    /** Present when route lines were rounded or simplified to fit. */
    simplification?: {
        original_points: number;
        points: number;
        max_error_m: number;
    };
}
/** A tool result's full app data, kept beside the result for the server's own use. */
export interface AppData {
    data: unknown;
    report: AppDataReport;
}
/** Key of the AppData on a tool result; a symbol, so it is never serialized. */
export declare const APP_DATA: unique symbol;
export type WithAppData = {
    [APP_DATA]?: AppData;
};
/**
 * `data` as base64 of its gzipped JSON in at most `room` characters. Unless `exact`,
 * route lines that don't fit are rounded to 1 m, then simplified until they do,
 * keeping every vertex a property points at (a section's start and end, a progress
 * point) and renumbering those indices. Without `inline`, the data doesn't fit.
 */
export declare function encodeAppData(data: unknown, room: number, exact: boolean): Promise<{
    inline?: string;
    report: AppDataReport;
}>;
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