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Getting Started with PTView.SDK

PTView.SDK is the official, zero-dependency contract library for creating custom technical indicators and out-of-process plugins for PtView Workstation.

Architectural Principles​

  1. Zero External Dependencies: PTView.SDK has no dependencies on WPF, Windows Forms, Newtonsoft.Json, or exchange network libraries. It targets pure .NET 10.
  2. Deterministic & Incremental: Designed around Calculate(IndicatorInput input). The engine invokes this sequentially for history bars and incrementally for real-time forming bars.
  3. Out-of-Process Isolation: Plugins can run inside PTView.PluginWorker through an isolated IPC bridge. An unhandled exception or memory leak in a third-party plugin will never crash the core trading workstation.

Installation & Setup​

Prerequisites​

  • .NET 10 SDK
  • Visual Studio 2026, JetBrains Rider, or VS Code with C# Dev Kit.

1. Create a Class Library​

Open your terminal and create a new project:

dotnet new classlib -n MyTradingIndicators -f net10.0
cd MyTradingIndicators

2. Add the PTView.SDK NuGet Package​

dotnet add package PTView.SDK

Alternatively, if building directly inside the PTView source tree or referencing a local build:

<ItemGroup>
  <PackageReference Include="PTView.SDK" Version="0.2.0-beta.1" />
</ItemGroup>

Hello World Indicator​

Here is a minimal, complete indicator that plots the typical price (High + Low + Close) / 3:

using PTView.SDK.Indicators;
using PTView.SDK.Models;

namespace MyTradingIndicators;

public sealed class TypicalPriceIndicator : IndicatorBase
{
    public const string Id = "MyIndicators.TypicalPrice";
    public const string PlotTypical = "typical";

    private IIndicatorBuffer? _outputBuffer;

    public override IndicatorMetadata Metadata { get; } = IndicatorMetadata.Create(
        id: Id,
        name: "Typical Price Indicator",
        shortName: "TypPrice",
        description: "Computes the arithmetic average of High, Low, and Close for each bar.",
        type: IndicatorType.Overlay,
        parameters: [],
        plots:
        [
            new IndicatorPlot(PlotTypical, "Typical Price", PlotStyle.Line, ColorRgba.PtCyan, lineWidth: 2)
        ],
        category: "Price Action");

    protected override void OnInit()
    {
        _outputBuffer = GetPlotBuffer(PlotTypical);
    }

    public override void Calculate(IndicatorInput input)
    {
        if (_outputBuffer == null)
            return;

        int index = input.CurrentIndex;
        var candle = input.Candles[index];
        double typical = (double)(candle.High + candle.Low + candle.Close) / 3.0;

        _outputBuffer.SetValue(index, typical);
    }
}

Next Steps​