export declare function compactFollowupLogReason(value: unknown): string | undefined;
export declare function isServerToolFollowupError(error: unknown): boolean;
export declare function extractServerToolFollowupErrorLogDetails(error: unknown): {
    code?: string;
    upstreamCode?: string;
    reason?: string;
};
export declare function finalizeServerToolFollowupConvertError(args: {
    error: unknown;
    requestId: string;
    defaultStatus?: number;
    message?: string;
}): {
    matched: boolean;
    stageDetails?: {
        code?: string;
        upstreamCode?: string;
        reason?: string;
        message?: string;
    };
};
export declare function finalizeServerToolBridgeConvertError(args: {
    error: unknown;
    requestId: string;
    message: string;
    defaultFollowupStatus?: number;
    isSseDecodeError?: boolean;
    isContextLengthExceeded?: boolean;
    code?: string;
    upstreamCode?: string;
    detailUpstreamCode?: string;
    detailReason?: string;
}): {
    handled: boolean;
    stageDetails?: {
        code?: string;
        upstreamCode?: string;
        reason?: string;
        message?: string;
    };
};
export declare function markServerToolFollowupError(args: {
    error: unknown;
    requestId: string;
    defaultStatus?: number;
}): boolean;