export declare class AgentUsageError extends Error {
    constructor(message: string);
}
export declare class AgentExpectationUsageError extends AgentUsageError {
    readonly sourceOption?: string;
    constructor(message: string, sourceOption?: string);
}
export declare const isAgentUsageError: (error: unknown) => error is AgentUsageError;
export declare const isAgentExpectationUsageError: (error: unknown) => error is AgentExpectationUsageError;