export type DevShellWriteRule = 'platform-reserved' | 'prefix-reserved' | 'session-sub-key' | 'session-foreign-key' | 'session-server-key';
export type DevShellKeyVerdict = {
    allowed: true;
} | {
    allowed: false;
    rule: DevShellWriteRule;
    message: string;
};
/** The one key a player's own session may write. */
export declare const playerSaveKey: (sub: string) => string;
export declare const isPlatformKey: (key: string) => boolean;
/** Reads are world-open except the platform's own namespace (it holds every player's entitlement doc). */
export declare function checkDevShellRead(key: string): DevShellKeyVerdict;
export declare function checkDevShellWrite(key: string, sub: string): DevShellKeyVerdict;