/** Base class for server errors. Each carries the HTTP status the server answers with. */
export declare class ServerError extends Error {
    /** Stable code, such as `THREAD_BUSY`, sent in the error body. */
    readonly code: string;
    /** HTTP status the server answers with. */
    readonly status: number;
    constructor(message: string, 
    /** Stable code, such as `THREAD_BUSY`, sent in the error body. */
    code: string, 
    /** HTTP status the server answers with. */
    status: number);
}
/** Raised when a request names something that does not exist, or belongs to another tenant. */
export declare class NotFoundError extends ServerError {
    constructor(what: string, id: string);
}
/** Raised when a request is malformed: bad JSON, a missing field, or an unknown assistant. */
export declare class BadRequestError extends ServerError {
    constructor(message: string, code?: string);
}
/** Raised when a request carries no usable credentials. */
export declare class UnauthorizedError extends ServerError {
    constructor(message?: string);
}
/** Raised when a principal is known but not allowed to do this. */
export declare class ForbiddenError extends ServerError {
    /** The scope the route required. */
    readonly scope: string;
    constructor(
    /** The scope the route required. */
    scope: string);
}
/** Raised when a thread is already running something and the busy policy is `reject`. */
export declare class ThreadBusyError extends ServerError {
    /** The thread. */
    readonly threadId: string;
    /** The run already in flight. */
    readonly runId: string;
    constructor(
    /** The thread. */
    threadId: string, 
    /** The run already in flight. */
    runId: string);
}
/** Raised when an assistant cannot do what a request needs, such as resuming or rolling back. */
export declare class AssistantCapabilityError extends ServerError {
    /** The assistant. */
    readonly assistant: string;
    /** What it cannot do. */
    readonly capability: string;
    constructor(
    /** The assistant. */
    assistant: string, 
    /** What it cannot do. */
    capability: string);
}