diff --git a/dotnet/agent-framework-dotnet.slnx b/dotnet/agent-framework-dotnet.slnx
index 6f5fa9d46a6..23358028687 100644
--- a/dotnet/agent-framework-dotnet.slnx
+++ b/dotnet/agent-framework-dotnet.slnx
@@ -169,6 +169,7 @@
+
diff --git a/dotnet/samples/02-agents/AgentProviders/foundry/Agent_Step27_AgentSkills/Agent_Step27_AgentSkills.csproj b/dotnet/samples/02-agents/AgentProviders/foundry/Agent_Step27_AgentSkills/Agent_Step27_AgentSkills.csproj
new file mode 100644
index 00000000000..bfc47f94465
--- /dev/null
+++ b/dotnet/samples/02-agents/AgentProviders/foundry/Agent_Step27_AgentSkills/Agent_Step27_AgentSkills.csproj
@@ -0,0 +1,20 @@
+
+
+
+ Exe
+ net10.0
+
+ enable
+ enable
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/dotnet/samples/02-agents/AgentProviders/foundry/Agent_Step27_AgentSkills/Program.cs b/dotnet/samples/02-agents/AgentProviders/foundry/Agent_Step27_AgentSkills/Program.cs
new file mode 100644
index 00000000000..bb21145b522
--- /dev/null
+++ b/dotnet/samples/02-agents/AgentProviders/foundry/Agent_Step27_AgentSkills/Program.cs
@@ -0,0 +1,82 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+// This sample demonstrates how to use Agent Skills with a FoundryAgent backed by a
+// server-side versioned agent.
+
+using Azure.AI.Projects;
+using Azure.AI.Projects.Agents;
+using Azure.Identity;
+using Microsoft.Agents.AI;
+using Microsoft.Agents.AI.Foundry;
+using Microsoft.Extensions.AI;
+
+// --- Configuration ---
+string endpoint = Environment.GetEnvironmentVariable("FOUNDRY_PROJECT_ENDPOINT")
+ ?? throw new InvalidOperationException("FOUNDRY_PROJECT_ENDPOINT is not set.");
+string deploymentName = Environment.GetEnvironmentVariable("FOUNDRY_MODEL") ?? "gpt-5.4-mini";
+
+string agentName = $"AgentSkillsAgent-{Guid.NewGuid():N}";
+
+// --- Define an Agent Skill ---
+var supportSkill = new AgentInlineSkill(
+ name: "support-policy",
+ description: "Example support response-time policy.",
+ instructions: """
+ Use this skill when answering questions about support response times or escalation.
+
+ Read the response-times resource before answering the user.
+ """)
+ .AddResource(
+ "response-times",
+ """
+ # Example Support Response Times
+
+ - Severity 1: Initial response within 15 minutes.
+ - Severity 2: Initial response within 1 hour.
+ - Severity 3: Initial response within 4 hours.
+
+ These values are illustrative, used only by this sample.
+ """);
+
+var skillsProvider = new AgentSkillsProvider(supportSkill);
+
+// WARNING: DefaultAzureCredential is convenient for development but requires careful consideration in production.
+// In production, consider using a specific credential (e.g., ManagedIdentityCredential) to avoid
+// latency issues, unintended credential probing, and potential security risks from fallback mechanisms.
+AIProjectClient aiProjectClient = new(new Uri(endpoint), new DefaultAzureCredential());
+
+// --- Create a server-side versioned Foundry agent ---
+ProjectsAgentVersion agentVersion = await aiProjectClient.AgentAdministrationClient.CreateAgentVersionAsync(
+ agentName,
+ new ProjectsAgentVersionCreationOptions(
+ new DeclarativeAgentDefinition(model: deploymentName)
+ {
+ Instructions = "You are a helpful support assistant. Use available skills when relevant.",
+ }));
+
+try
+{
+ FoundryAgent foundryAgent = aiProjectClient.AsAIAgent(
+ agentVersion,
+ tools: null,
+ clientFactory: inner => inner
+ .AsBuilder()
+ .UseAIContextProviders(skillsProvider)
+ .Build());
+
+ AIAgent agent = foundryAgent
+ .AsBuilder()
+ .UseToolApproval(new ToolApprovalAgentOptions
+ {
+ AutoApprovalRules = [AgentSkillsProvider.ReadOnlyToolsAutoApprovalRule],
+ })
+ .Build();
+
+ Console.WriteLine(await agent.RunAsync(
+ "According to the support policy, how quickly should a Severity 1 incident receive an initial response?"));
+}
+finally
+{
+ // Cleanup: deletes the agent and all its versions.
+ await aiProjectClient.AgentAdministrationClient.DeleteAgentAsync(agentName);
+}
diff --git a/dotnet/samples/02-agents/AgentProviders/foundry/Agent_Step27_AgentSkills/README.md b/dotnet/samples/02-agents/AgentProviders/foundry/Agent_Step27_AgentSkills/README.md
new file mode 100644
index 00000000000..c013bd2c015
--- /dev/null
+++ b/dotnet/samples/02-agents/AgentProviders/foundry/Agent_Step27_AgentSkills/README.md
@@ -0,0 +1,30 @@
+# Foundry Agent Skills
+
+This sample demonstrates how to use Agent Skills with a `FoundryAgent` backed by a
+server-side versioned agent in Microsoft Foundry.
+
+## What this sample demonstrates
+
+- Creating a server-side versioned Foundry agent
+- Defining an Agent Skill in code with `AgentInlineSkill`
+- Injecting `AgentSkillsProvider` through the `clientFactory`
+- Auto-approving read-only Agent Skills operations
+- Invoking the agent and cleaning up the server-side agent
+
+## Prerequisites
+
+- A Microsoft Foundry project
+- An authenticated Azure identity (for example, sign in with `az login`)
+
+Set the following environment variables:
+
+```powershell
+$env:FOUNDRY_PROJECT_ENDPOINT="https://your-foundry-service.services.ai.azure.com/api/projects/your-foundry-project"
+$env:FOUNDRY_MODEL="gpt-5.4-mini"
+```
+
+## Run the sample
+
+```powershell
+dotnet run
+```
diff --git a/dotnet/samples/02-agents/AgentProviders/foundry/README.md b/dotnet/samples/02-agents/AgentProviders/foundry/README.md
index eaae6be594f..e27fac10b09 100644
--- a/dotnet/samples/02-agents/AgentProviders/foundry/README.md
+++ b/dotnet/samples/02-agents/AgentProviders/foundry/README.md
@@ -75,6 +75,7 @@ Some samples require extra tool-specific environment variables. See each sample
| [Code interpreter file download](./Agent_Step24_CodeInterpreterFileDownload/) | Download container files generated by code interpreter |
| [Foundry toolbox via MCP](./Agent_Step25_FoundryToolboxMcp/README.md) | Use a Foundry Toolbox from a non-hosted agent via its MCP endpoint |
| [Foundry toolbox MCP skills](./Agent_Step26_FoundryToolboxMcpSkills/README.md) | Use a Foundry Toolbox with MCP-based skills discovery (SEP-2640) via AIContextProviders |
+| [Agent Skills](./Agent_Step27_AgentSkills/README.md) | Use Agent Skills with a server-side versioned Foundry agent |
## Running the samples