export declare const DEFAULT_AGENT_ID = "main";
export declare const DEFAULT_MAIN_KEY = "main";
export declare function normalizeAgentId(value: string | undefined | null): string;
export declare function normalizeMainKey(value: string | undefined | null): string;
export declare function buildAgentMainSessionKey(params: {
    agentId: string;
    mainKey?: string | undefined;
}): string;
export declare function parseAgentSessionKey(sessionKey: string | undefined | null): {
    agentId: string;
    rest: string;
} | null;
export declare function isSubagentSessionKey(sessionKey: string | undefined | null): boolean;
export declare function resolveAgentIdFromSessionKey(sessionKey: string | undefined | null): string;
export declare function toAgentStoreSessionKey(params: {
    agentId: string;
    requestKey: string | undefined | null;
    mainKey?: string | undefined;
}): string;
export declare function resolveSessionKey(params: {
    agentId?: string | undefined;
    sessionId?: string | undefined;
    sessionKey?: string | undefined;
}): string;
export declare function validateSessionKeyChars(key: string): {
    valid: boolean;
    reason?: string;
};
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