Microsoft.Azure.Functions.Worker.Sdk 2.1.0

Prefix Reserved 
dotnet add package Microsoft.Azure.Functions.Worker.Sdk --version 2.1.0
                    


                    

                
NuGet\Install-Package Microsoft.Azure.Functions.Worker.Sdk -Version 2.1.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Microsoft.Azure.Functions.Worker.Sdk" Version="2.1.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Microsoft.Azure.Functions.Worker.Sdk" Version="2.1.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Microsoft.Azure.Functions.Worker.Sdk" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add Microsoft.Azure.Functions.Worker.Sdk --version 2.1.0
                    


                    

                
#r "nuget: Microsoft.Azure.Functions.Worker.Sdk, 2.1.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package Microsoft.Azure.Functions.Worker.Sdk@2.1.0
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=Microsoft.Azure.Functions.Worker.Sdk&version=2.1.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Microsoft.Azure.Functions.Worker.Sdk&version=2.1.0
                    


                            Install as a Cake Tool

Microsoft.Azure.Functions.Worker.Sdk

This package provides development-time support for Azure Functions .NET isolated worker apps, including MSBuild build and publish targets, a Roslyn source generator for function metadata, and analyzers.

Getting Started

This package is typically added via the Azure Functions project template. To add it manually:

dotnet add package Microsoft.Azure.Functions.Worker.Sdk

For more information, see the Azure Functions .NET isolated worker guide.

What's Included

Build & Publish Targets

The SDK adds MSBuild targets that run during build and publish:

  • Function indexing — Analyzes your compiled assembly and generates function metadata (functions.metadata) so the Azure Functions host can discover your functions without runtime reflection.
  • Extension bundling — Auto-generates a WorkerExtensions project that compiles all binding extension packages into a single assembly.
  • Publish support — Configures output for deployment, including Docker base image assignment for container scenarios.

Source Generators

Three Roslyn source generators run at compile time:

  • FunctionMetadataProvider — Generates a IFunctionMetadataProvider implementation that returns metadata for all [Function]-attributed methods. This enables build-time indexing for fast cold starts.
  • FunctionExecutor — Generates strongly-typed wrapper methods for invoking user functions with correct parameter binding.
  • ExtensionStartupRunner — Generates a startup orchestrator that calls Configure() on all extension startup types.

Analyzers

This package includes analyzers (AZFW0001–AZFW0013, AZFW0017) that catch common issues during development. For the full list of rules and detailed documentation, see the analyzer rules reference.

Configuration

The SDK exposes MSBuild properties you can set in your .csproj to control its behavior:

<PropertyGroup>
  
  <AzureFunctionsVersion>v4</AzureFunctionsVersion>

  
  <FunctionsEnableWorkerIndexing>true</FunctionsEnableWorkerIndexing>

  
  <FunctionsEnableMetadataSourceGen>true</FunctionsEnableMetadataSourceGen>

  
  <FunctionsEnableExecutorSourceGen>true</FunctionsEnableExecutorSourceGen>

  
  <FunctionsGeneratedCodeNamespace>MyApp.Generated</FunctionsGeneratedCodeNamespace>
</PropertyGroup>
There are no supported framework assets in this package.

Learn more about Target Frameworks and .NET Standard.

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Package Description
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Version Downloads Last Updated
2.1.0 1,254,643 7/23/2026
2.0.7 16,560,481 11/13/2025
2.0.6 940,826 11/6/2025
2.0.5 9,280,334 6/19/2025
2.0.4 1,956,841 5/22/2025
2.0.3 156,642 5/21/2025
2.0.2 5,099,519 3/26/2025
2.0.1 2,078,818 2/25/2025
2.0.0 12,054,102 11/12/2024
2.0.0-preview2 94,641 9/25/2024
2.0.0-preview1 19,548 9/10/2024
1.18.1 6,217,851 10/7/2024
1.18.0 1,163,369 9/25/2024
1.17.4 7,216,375 7/11/2024
1.17.3 349,487 7/9/2024
1.17.3-preview2 75,370 5/21/2024
1.17.3-preview1 45,412 4/4/2024
1.17.2 10,665,520 3/1/2024
1.17.1 577,205 2/28/2024
1.17.0 3,457,512 2/9/2024
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