/**
 * MCP tool: read/write CrossPad settings via the running simulator.
 */
/** What a setting can hold. Booleans travel as 0/1 — the wire format is int-only. */
export type SettingsValue = number | boolean;
export interface SettingsGetResult {
    success: boolean;
    category?: string;
    settings?: Record<string, unknown>;
    error?: string;
}
export interface SettingsSetResult {
    success: boolean;
    key?: string;
    value?: SettingsValue;
    error?: string;
}
/**
 * The categories `settings_get` accepts, one per settings group that
 * CrosspadSettings actually declares.
 *
 * v9 hardcoded this list and it drifted from the header within a release. The
 * groups now come from the same parse that backs `crosspad://settings/schema`,
 * so a group added to the firmware is a category here without anyone editing
 * this file.
 */
export declare function settingsCategories(): string[];
/**
 * Read settings from the running simulator.
 * @param category  "all" or one of `settingsCategories()`
 */
export declare function crosspadSettingsGet(category?: string): Promise<SettingsGetResult>;
/**
 * Write a single setting on the running simulator.
 * @param key    Dotted key name (e.g. "lcd_brightness", "keypad.eco_mode", "vibration.enable")
 * @param value  Number, or boolean for the `bool` fields of the schema
 */
export declare function crosspadSettingsSet(key: string, value: SettingsValue): Promise<SettingsSetResult>;