diff --git a/OpenNest.Data/MachineConfig.cs b/OpenNest.Data/MachineConfig.cs
new file mode 100644
index 0000000..77abe8a
--- /dev/null
+++ b/OpenNest.Data/MachineConfig.cs
@@ -0,0 +1,26 @@
+using OpenNest.Math;
+
+namespace OpenNest.Data;
+
+public class MachineConfig
+{
+    public Guid Id { get; set; } = Guid.NewGuid();
+    public int SchemaVersion { get; set; } = 1;
+    public string Name { get; set; } = "";
+    public MachineType Type { get; set; } = MachineType.Laser;
+    public UnitSystem Units { get; set; } = UnitSystem.Inches;
+    public List<MaterialConfig> Materials { get; set; } = new();
+
+    public ThicknessConfig? GetParameters(string material, double thickness)
+    {
+        var mat = GetMaterial(material);
+        if (mat is null) return null;
+        return mat.Thicknesses.FirstOrDefault(t => t.Value.IsEqualTo(thickness));
+    }
+
+    public MaterialConfig? GetMaterial(string name)
+    {
+        return Materials.FirstOrDefault(m =>
+            string.Equals(m.Name, name, StringComparison.OrdinalIgnoreCase));
+    }
+}
diff --git a/OpenNest.Data/MachineSummary.cs b/OpenNest.Data/MachineSummary.cs
new file mode 100644
index 0000000..f980bb0
--- /dev/null
+++ b/OpenNest.Data/MachineSummary.cs
@@ -0,0 +1,3 @@
+namespace OpenNest.Data;
+
+public record MachineSummary(Guid Id, string Name);
diff --git a/OpenNest.Data/MaterialConfig.cs b/OpenNest.Data/MaterialConfig.cs
new file mode 100644
index 0000000..cd0d960
--- /dev/null
+++ b/OpenNest.Data/MaterialConfig.cs
@@ -0,0 +1,9 @@
+namespace OpenNest.Data;
+
+public class MaterialConfig
+{
+    public string Name { get; set; } = "";
+    public string Grade { get; set; } = "";
+    public double Density { get; set; }
+    public List<ThicknessConfig> Thicknesses { get; set; } = new();
+}
diff --git a/OpenNest.Data/OpenNest.Data.csproj b/OpenNest.Data/OpenNest.Data.csproj
index 3a90a24..89538a0 100644
--- a/OpenNest.Data/OpenNest.Data.csproj
+++ b/OpenNest.Data/OpenNest.Data.csproj
@@ -3,6 +3,8 @@
     <TargetFramework>net8.0-windows</TargetFramework>
     <RootNamespace>OpenNest.Data</RootNamespace>
     <AssemblyName>OpenNest.Data</AssemblyName>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
   </PropertyGroup>
   <ItemGroup>
     <ProjectReference Include="..\OpenNest.Core\OpenNest.Core.csproj" />
diff --git a/OpenNest.Tests/Data/MachineConfigTests.cs b/OpenNest.Tests/Data/MachineConfigTests.cs
new file mode 100644
index 0000000..58194bd
--- /dev/null
+++ b/OpenNest.Tests/Data/MachineConfigTests.cs
@@ -0,0 +1,131 @@
+using OpenNest.Data;
+
+namespace OpenNest.Tests.Data;
+
+public class MachineConfigTests
+{
+    private static MachineConfig CreateTestMachine()
+    {
+        return new MachineConfig
+        {
+            Id = Guid.NewGuid(),
+            Name = "Test Laser",
+            Type = MachineType.Laser,
+            Units = UnitSystem.Inches,
+            Materials = new List<MaterialConfig>
+            {
+                new()
+                {
+                    Name = "Mild Steel",
+                    Grade = "A36",
+                    Density = 0.2836,
+                    Thicknesses = new List<ThicknessConfig>
+                    {
+                        new()
+                        {
+                            Value = 0.250,
+                            Kerf = 0.012,
+                            AssistGas = "O2",
+                            LeadIn = new LeadConfig { Type = "Arc", Radius = 0.25 },
+                            LeadOut = new LeadConfig { Type = "Line", Length = 0.125 },
+                            PlateSizes = new List<string> { "60x120", "48x96" }
+                        },
+                        new()
+                        {
+                            Value = 0.500,
+                            Kerf = 0.020,
+                            AssistGas = "O2",
+                            LeadIn = new LeadConfig { Type = "Arc", Radius = 0.375 },
+                            LeadOut = new LeadConfig { Type = "Line", Length = 0.25 },
+                            PlateSizes = new List<string> { "60x120" }
+                        }
+                    }
+                },
+                new()
+                {
+                    Name = "Stainless Steel",
+                    Grade = "304",
+                    Density = 0.289,
+                    Thicknesses = new List<ThicknessConfig>
+                    {
+                        new()
+                        {
+                            Value = 0.250,
+                            Kerf = 0.014,
+                            AssistGas = "N2"
+                        }
+                    }
+                }
+            }
+        };
+    }
+
+    [Fact]
+    public void GetParameters_ExactMatch_ReturnsThickness()
+    {
+        var machine = CreateTestMachine();
+        var result = machine.GetParameters("Mild Steel", 0.250);
+        Assert.NotNull(result);
+        Assert.Equal(0.012, result.Kerf);
+        Assert.Equal("O2", result.AssistGas);
+    }
+
+    [Fact]
+    public void GetParameters_WithinTolerance_ReturnsThickness()
+    {
+        var machine = CreateTestMachine();
+        var result = machine.GetParameters("Mild Steel", 0.250001);
+        Assert.NotNull(result);
+        Assert.Equal(0.012, result.Kerf);
+    }
+
+    [Fact]
+    public void GetParameters_NoMatch_ReturnsNull()
+    {
+        var machine = CreateTestMachine();
+        var result = machine.GetParameters("Mild Steel", 0.375);
+        Assert.Null(result);
+    }
+
+    [Fact]
+    public void GetParameters_CaseInsensitiveMaterial()
+    {
+        var machine = CreateTestMachine();
+        var result = machine.GetParameters("mild steel", 0.250);
+        Assert.NotNull(result);
+        Assert.Equal(0.012, result.Kerf);
+    }
+
+    [Fact]
+    public void GetParameters_UnknownMaterial_ReturnsNull()
+    {
+        var machine = CreateTestMachine();
+        var result = machine.GetParameters("Titanium", 0.250);
+        Assert.Null(result);
+    }
+
+    [Fact]
+    public void GetMaterial_ReturnsMaterialByName()
+    {
+        var machine = CreateTestMachine();
+        var result = machine.GetMaterial("Stainless Steel");
+        Assert.NotNull(result);
+        Assert.Equal("304", result.Grade);
+    }
+
+    [Fact]
+    public void GetMaterial_CaseInsensitive()
+    {
+        var machine = CreateTestMachine();
+        var result = machine.GetMaterial("stainless steel");
+        Assert.NotNull(result);
+    }
+
+    [Fact]
+    public void GetMaterial_NotFound_ReturnsNull()
+    {
+        var machine = CreateTestMachine();
+        var result = machine.GetMaterial("Titanium");
+        Assert.Null(result);
+    }
+}
diff --git a/OpenNest.Tests/OpenNest.Tests.csproj b/OpenNest.Tests/OpenNest.Tests.csproj
index 6ffd66d..4b2f7fa 100644
--- a/OpenNest.Tests/OpenNest.Tests.csproj
+++ b/OpenNest.Tests/OpenNest.Tests.csproj
@@ -22,6 +22,7 @@
 
   <ItemGroup>
     <ProjectReference Include="..\OpenNest.Api\OpenNest.Api.csproj" />
+    <ProjectReference Include="..\OpenNest.Data\OpenNest.Data.csproj" />
     <ProjectReference Include="..\OpenNest.Core\OpenNest.Core.csproj" />
     <ProjectReference Include="..\OpenNest.Engine\OpenNest.Engine.csproj" />
     <ProjectReference Include="..\OpenNest.IO\OpenNest.IO.csproj" />