Microsoft.Azure.Functions.Worker.Extensions.Mcp 1.0.0-preview.1

Prefix Reserved
.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher.
This is a prerelease version of Microsoft.Azure.Functions.Worker.Extensions.Mcp.
There is a newer version of this package available.
See the version list below for details. 
dotnet add package Microsoft.Azure.Functions.Worker.Extensions.Mcp --version 1.0.0-preview.1
                    


                    

                
NuGet\Install-Package Microsoft.Azure.Functions.Worker.Extensions.Mcp -Version 1.0.0-preview.1
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.Extensions.Mcp" Version="1.0.0-preview.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Microsoft.Azure.Functions.Worker.Extensions.Mcp" Version="1.0.0-preview.1" />
                    


                            Directory.Packages.props
                        

                    

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


                            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.Extensions.Mcp --version 1.0.0-preview.1
                    


                    

                
#r "nuget: Microsoft.Azure.Functions.Worker.Extensions.Mcp, 1.0.0-preview.1"
#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.Extensions.Mcp@1.0.0-preview.1
#: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.Extensions.Mcp&version=1.0.0-preview.1&prerelease
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Microsoft.Azure.Functions.Worker.Extensions.Mcp&version=1.0.0-preview.1&prerelease
                    


                            Install as a Cake Tool

Microsoft.Azure.Functions.Worker.Extensions.Mcp

This package provides triggers and bindings to support exposing Azure Functions .NET isolated functions as a Model Context Protocol (MCP) server.

Example usage

The following is an example of how to use the MCP tool trigger in an Azure Functions application:

[Function(nameof(GetSnippet))]
public object GetSnippet(
    [McpToolTrigger(GetSnippetToolName, GetSnippetToolDescription)] ToolInvocationContext context,
    [BlobInput(BlobPath)] string snippetContent)
{
    return snippetContent;
}

You can also bind to the MCP tool property arguments using the McpToolProperty input binding as follows:

[Function(nameof(SaveSnippet))]
[BlobOutput(BlobPath)]
public string SaveSnippet(
    [McpToolTrigger(SaveSnippetToolName, SaveSnippetToolDescription)] ToolInvocationContext context,
    [McpToolProperty(SnippetNamePropertyName, PropertyType, SnippetNamePropertyDescription)] string name,
    [McpToolProperty(SnippetPropertyName, PropertyType, SnippetPropertyDescription)] string snippet)
{
    return snippet;
}

The above example will automatically expose the name and snippet parameters as properties for the MCP tool.

Alternatively, you can define properties when creating your application as follows:

builder.EnableMcpToolMetadata();

// Define properties for the MCP tool:
builder.ConfigureMcpTool("SaveSnippet")
    .WithProperty(SnippetNamePropertyName, PropertyType, SnippetNamePropertyDescription);

The above example demonstrates how the properties for the tool named SaveSnippet are defined.

Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 was computed.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  net10.0 was computed.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (3)

Showing the top 3 NuGet packages that depend on Microsoft.Azure.Functions.Worker.Extensions.Mcp:

Package Downloads
Microsoft.Agents.AI.Hosting.AzureFunctions

Provides durable agent hosting and orchestration support for Microsoft Agent Framework workloads.
Microsoft.Azure.Functions.Worker.Extensions.Mcp.Sdk

SDK integration layer for Azure Functions MCP extension, providing access to ModelContextProtocol SDK models and APIs for .NET isolated functions.
AzureFunctions.TestFramework.Mcp

McpToolTrigger, McpResourceTrigger, and McpPromptTrigger invocation support for the Azure Functions Test Framework. Enables triggering MCP-triggered functions in integration tests.

GitHub repositories (1)

Showing the top 1 popular GitHub repositories that depend on Microsoft.Azure.Functions.Worker.Extensions.Mcp:

Repository Stars
Azure/azure-functions-dotnet-worker
Azure Functions out-of-process .NET language worker
Version Downloads Last Updated
1.5.0-preview.1 365 4/3/2026
1.4.0 3,486 4/2/2026
1.3.0 4,130 3/11/2026
1.2.0-preview.1 820 1/30/2026
1.1.0 19,981 11/26/2025
1.0.0 86,743 10/9/2025
1.0.0-preview.7 9,028 8/28/2025
1.0.0-preview.6 10,776 5/16/2025
1.0.0-preview.5 1,731 5/12/2025
1.0.0-preview.4 443 5/9/2025
1.0.0-preview.3 267 5/8/2025
1.0.0-preview.2 2,362 4/6/2025
1.0.0-preview.1 436 4/4/2025