Suggest you rename the TimeInterval enum to something more specific to this library

[astrohart]

namespace CoinCapApi.Types
{
    public enum TimeInterval
    {
        /// <summary>
        /// 1 minute
        /// </summary>
        M1 = 1,

        /// <summary>
        /// 5 minutes
        /// </summary>
        M5 = 2,

        /// <summary>
        /// 15 minutes
        /// </summary>
        M15 = 4,

        /// <summary>
        /// 30 minutes
        /// </summary>
        M30 = 8,

        /// <summary>
        /// 1 hour
        /// </summary>
        H1 = 16,

        /// <summary>
        /// 2 hours
        /// </summary>
        H2 = 32,

        /// <summary>
        /// 6 hours
        /// </summary>
        H6 = 64,

        /// <summary>
        /// 12 hours
        /// </summary>
        H12 = 128,

        /// <summary>
        /// 1 day (24 hours)
        /// </summary>
        D1 = 256
    }
}

Listing 1. The TimeInterval enum.

@ByronAP hello. I have a suggestion. The enum shown in Listing 1 is named TimeInterval. This is pretty generic.

I suggest you rename it something such as CoinCapTimeInterval or somesuch. This way, it would not clash with any other symbols that the developer consuming this library has named TimeInterval as well.