Microsoft.AgentGovernance.Extensions.ModelContextProtocol 3.3.0

Prefix Reserved
.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher.
There is a newer version of this package available.
See the version list below for details. 
dotnet add package Microsoft.AgentGovernance.Extensions.ModelContextProtocol --version 3.3.0
                    


                    

                
NuGet\Install-Package Microsoft.AgentGovernance.Extensions.ModelContextProtocol -Version 3.3.0
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.AgentGovernance.Extensions.ModelContextProtocol" Version="3.3.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Microsoft.AgentGovernance.Extensions.ModelContextProtocol" Version="3.3.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="Microsoft.AgentGovernance.Extensions.ModelContextProtocol" />
                    


                            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.AgentGovernance.Extensions.ModelContextProtocol --version 3.3.0
                    


                    

                
#r "nuget: Microsoft.AgentGovernance.Extensions.ModelContextProtocol, 3.3.0"
#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.AgentGovernance.Extensions.ModelContextProtocol@3.3.0
#: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.AgentGovernance.Extensions.ModelContextProtocol&version=3.3.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=Microsoft.AgentGovernance.Extensions.ModelContextProtocol&version=3.3.0
                    


                            Install as a Cake Tool

Microsoft.AgentGovernance.Extensions.ModelContextProtocol

Public Preview companion package for the official Model Context Protocol C# SDK.

Install

dotnet add package Microsoft.AgentGovernance.Extensions.ModelContextProtocol

Usage

using System.Security.Claims;

builder.Services
    .AddMcpServer()
    .WithGovernance(options =>
    {
        options.PolicyPaths.Add("policies/mcp.yaml");
        options.AgentIdResolver = static principal =>
            principal.FindFirst("agent_id")?.Value
            ?? principal.FindFirst(ClaimTypes.NameIdentifier)?.Value;
    });

WithGovernance(...) wires governance policy evaluation, MCP tool-definition scanning, fallback tool-call governance, and response sanitization for MCP servers built with IMcpServerBuilder.

Migration notes

  • RequireAuthenticatedAgentId now defaults to true.
  • DefaultAgentId is only used when you explicitly set RequireAuthenticatedAgentId = false.
  • context.Items["agent_id"] is not used for governance identity resolution.
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

This package is not used by any NuGet packages.

GitHub repositories (1)

Showing the top 1 popular GitHub repositories that depend on Microsoft.AgentGovernance.Extensions.ModelContextProtocol:

Repository Stars
foxminchan/BookWorm
The practical implementation of Aspire using Microservices, AI-Agents
Version Downloads Last Updated
3.7.0 182 5/18/2026
3.6.0 205 5/12/2026
3.5.0 237 5/8/2026
3.3.0 103 5/5/2026

https://github.com/microsoft/agent-governance-toolkit/blob/main/CHANGELOG.md