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Merged
SergeyMenshykh merged 8 commits into from
May 25, 2026
Merged

.NET: [Breaking] Refactor AgentSkill API to async resource and script lookup #6030

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6a9c6a9
.NET: Refactor AgentSkill API to async resource and script lookup
SergeyMenshykh May 22, 2026
d26ec2c
Address PR review comments
SergeyMenshykh May 22, 2026
85d1a1c
Fix formatting: add UTF-8 BOM and remove unused using
SergeyMenshykh May 22, 2026
474bbf8
Fix XML cref: Resources/Scripts are on AgentClassSkill<TSelf>
SergeyMenshykh May 22, 2026
be30fbb
Remove HasResources and HasScripts properties from AgentSkill
SergeyMenshykh May 25, 2026
e60a8c4
Add blank line for readability in file-based skills sample
SergeyMenshykh May 25, 2026
d33b65a
Merge branch 'main' into dotnet/skills-async-api
SergeyMenshykh May 25, 2026
89550d8
Fix HostedAgentSkillsPatternTests for always-included tools
SergeyMenshykh May 25, 2026
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1 change: 1 addition & 0 deletions dotnet/samples/02-agents/AgentSkills/Agent_Step01_FileBasedSkills/Program.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,7 @@
var skillsProvider = new AgentSkillsProvider(
Path.Combine(AppContext.BaseDirectory, "skills"),
SubprocessScriptRunner.RunAsync);

// --- Agent Setup ---
AIAgent agent = new AzureOpenAIClient(new Uri(endpoint), new DefaultAzureCredential())
.GetResponsesClient()
Expand Down
2 changes: 1 addition & 1 deletion dotnet/samples/02-agents/AgentSkills/Agent_Step03_ClassBasedSkills/Program.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -51,7 +51,7 @@
/// Properties annotated with <see cref="AgentSkillResourceAttribute"/> are automatically
/// discovered as skill resources, and methods annotated with <see cref="AgentSkillScriptAttribute"/>
/// are automatically discovered as skill scripts. Alternatively,
/// <see cref="AgentSkill.Resources"/> and <see cref="AgentSkill.Scripts"/> can be overridden.
/// <see cref="AgentClassSkill{TSelf}.Resources"/> and <see cref="AgentClassSkill{TSelf}.Scripts"/> can be overridden.
/// </remarks>
internal sealed class UnitConverterSkill : AgentClassSkill<UnitConverterSkill>
{
Expand Down
140 changes: 140 additions & 0 deletions dotnet/src/Microsoft.Agents.AI/CompatibilitySuppressions.xml
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Expand Up @@ -43,6 +43,27 @@
<Right>lib/net10.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0002</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkill.get_Content</Target>
<Left>lib/net10.0/Microsoft.Agents.AI.dll</Left>
<Right>lib/net10.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0002</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkill.get_Resources</Target>
<Left>lib/net10.0/Microsoft.Agents.AI.dll</Left>
<Right>lib/net10.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0002</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkill.get_Scripts</Target>
<Left>lib/net10.0/Microsoft.Agents.AI.dll</Left>
<Right>lib/net10.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0002</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkillScript.RunAsync(Microsoft.Agents.AI.AgentSkill,Microsoft.Extensions.AI.AIFunctionArguments,System.Threading.CancellationToken)</Target>
Expand Down Expand Up @@ -106,6 +127,27 @@
<Right>lib/net472/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0002</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkill.get_Content</Target>
<Left>lib/net472/Microsoft.Agents.AI.dll</Left>
<Right>lib/net472/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0002</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkill.get_Resources</Target>
<Left>lib/net472/Microsoft.Agents.AI.dll</Left>
<Right>lib/net472/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0002</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkill.get_Scripts</Target>
<Left>lib/net472/Microsoft.Agents.AI.dll</Left>
<Right>lib/net472/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0002</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkillScript.RunAsync(Microsoft.Agents.AI.AgentSkill,Microsoft.Extensions.AI.AIFunctionArguments,System.Threading.CancellationToken)</Target>
Expand Down Expand Up @@ -169,6 +211,27 @@
<Right>lib/net8.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0002</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkill.get_Content</Target>
<Left>lib/net8.0/Microsoft.Agents.AI.dll</Left>
<Right>lib/net8.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0002</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkill.get_Resources</Target>
<Left>lib/net8.0/Microsoft.Agents.AI.dll</Left>
<Right>lib/net8.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0002</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkill.get_Scripts</Target>
<Left>lib/net8.0/Microsoft.Agents.AI.dll</Left>
<Right>lib/net8.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0002</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkillScript.RunAsync(Microsoft.Agents.AI.AgentSkill,Microsoft.Extensions.AI.AIFunctionArguments,System.Threading.CancellationToken)</Target>
Expand Down Expand Up @@ -232,6 +295,27 @@
<Right>lib/net9.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0002</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkill.get_Content</Target>
<Left>lib/net9.0/Microsoft.Agents.AI.dll</Left>
<Right>lib/net9.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0002</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkill.get_Resources</Target>
<Left>lib/net9.0/Microsoft.Agents.AI.dll</Left>
<Right>lib/net9.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0002</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkill.get_Scripts</Target>
<Left>lib/net9.0/Microsoft.Agents.AI.dll</Left>
<Right>lib/net9.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0002</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkillScript.RunAsync(Microsoft.Agents.AI.AgentSkill,Microsoft.Extensions.AI.AIFunctionArguments,System.Threading.CancellationToken)</Target>
Expand Down Expand Up @@ -295,6 +379,27 @@
<Right>lib/netstandard2.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0002</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkill.get_Content</Target>
<Left>lib/netstandard2.0/Microsoft.Agents.AI.dll</Left>
<Right>lib/netstandard2.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0002</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkill.get_Resources</Target>
<Left>lib/netstandard2.0/Microsoft.Agents.AI.dll</Left>
<Right>lib/netstandard2.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0002</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkill.get_Scripts</Target>
<Left>lib/netstandard2.0/Microsoft.Agents.AI.dll</Left>
<Right>lib/netstandard2.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0002</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkillScript.RunAsync(Microsoft.Agents.AI.AgentSkill,Microsoft.Extensions.AI.AIFunctionArguments,System.Threading.CancellationToken)</Target>
Expand All @@ -316,34 +421,69 @@
<Right>lib/netstandard2.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0005</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkill.GetContentAsync(System.Threading.CancellationToken)</Target>
<Left>lib/net10.0/Microsoft.Agents.AI.dll</Left>
<Right>lib/net10.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0005</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkillScript.RunAsync(Microsoft.Agents.AI.AgentSkill,System.Nullable{System.Text.Json.JsonElement},System.IServiceProvider,System.Threading.CancellationToken)</Target>
<Left>lib/net10.0/Microsoft.Agents.AI.dll</Left>
<Right>lib/net10.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0005</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkill.GetContentAsync(System.Threading.CancellationToken)</Target>
<Left>lib/net472/Microsoft.Agents.AI.dll</Left>
<Right>lib/net472/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0005</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkillScript.RunAsync(Microsoft.Agents.AI.AgentSkill,System.Nullable{System.Text.Json.JsonElement},System.IServiceProvider,System.Threading.CancellationToken)</Target>
<Left>lib/net472/Microsoft.Agents.AI.dll</Left>
<Right>lib/net472/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0005</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkill.GetContentAsync(System.Threading.CancellationToken)</Target>
<Left>lib/net8.0/Microsoft.Agents.AI.dll</Left>
<Right>lib/net8.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0005</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkillScript.RunAsync(Microsoft.Agents.AI.AgentSkill,System.Nullable{System.Text.Json.JsonElement},System.IServiceProvider,System.Threading.CancellationToken)</Target>
<Left>lib/net8.0/Microsoft.Agents.AI.dll</Left>
<Right>lib/net8.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0005</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkill.GetContentAsync(System.Threading.CancellationToken)</Target>
<Left>lib/net9.0/Microsoft.Agents.AI.dll</Left>
<Right>lib/net9.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0005</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkillScript.RunAsync(Microsoft.Agents.AI.AgentSkill,System.Nullable{System.Text.Json.JsonElement},System.IServiceProvider,System.Threading.CancellationToken)</Target>
<Left>lib/net9.0/Microsoft.Agents.AI.dll</Left>
<Right>lib/net9.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0005</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkill.GetContentAsync(System.Threading.CancellationToken)</Target>
<Left>lib/netstandard2.0/Microsoft.Agents.AI.dll</Left>
<Right>lib/netstandard2.0/Microsoft.Agents.AI.dll</Right>
<IsBaselineSuppression>true</IsBaselineSuppression>
</Suppression>
<Suppression>
<DiagnosticId>CP0005</DiagnosticId>
<Target>M:Microsoft.Agents.AI.AgentSkillScript.RunAsync(Microsoft.Agents.AI.AgentSkill,System.Nullable{System.Text.Json.JsonElement},System.IServiceProvider,System.Threading.CancellationToken)</Target>
Expand Down
40 changes: 28 additions & 12 deletions dotnet/src/Microsoft.Agents.AI/Skills/AgentSkill.cs
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Original file line number Diff line number Diff line change
@@ -1,7 +1,8 @@
// Copyright (c) Microsoft. All rights reserved.

using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.Shared.DiagnosticIds;

namespace Microsoft.Agents.AI;
Expand Down Expand Up @@ -34,29 +35,44 @@ public abstract class AgentSkill
/// <summary>
/// Gets the full skill content.
/// </summary>
/// <remarks>
/// <param name="cancellationToken">Cancellation token.</param>
/// <returns>
/// For file-based skills this is the raw SKILL.md file content, optionally
/// augmented with a synthesized scripts block when scripts are present.
/// For code-defined skills this is a synthesized XML document
/// containing name, description, and body (instructions, resources, scripts).
/// </remarks>
public abstract string Content { get; }
/// </returns>
public abstract ValueTask<string> GetContentAsync(CancellationToken cancellationToken = default);

/// <summary>
/// Gets the resources associated with this skill, or <see langword="null"/> if none.
/// Gets a resource owned by this skill by name.
/// </summary>
/// <param name="name">The resource name (e.g. an identifier or a relative path referenced inside the skill content).</param>
/// <param name="cancellationToken">Cancellation token.</param>
/// <returns>
/// The <see cref="AgentSkillResource"/>, or <see langword="null"/> when no resource with the given name exists.
/// </returns>
/// <remarks>
/// The default implementation returns <see langword="null"/>.
/// Override this property in derived classes to provide skill-specific resources.
/// The default implementation returns <see langword="null"/>. Override in derived classes that
/// expose resources.
/// </remarks>
public virtual IReadOnlyList<AgentSkillResource>? Resources => null;
public virtual ValueTask<AgentSkillResource?> GetResourceAsync(
string name,
CancellationToken cancellationToken = default) => default;

/// <summary>
/// Gets the scripts associated with this skill, or <see langword="null"/> if none.
/// Gets a script owned by this skill by name.
/// </summary>
/// <param name="name">The script name.</param>
/// <param name="cancellationToken">Cancellation token.</param>
/// <returns>
/// The <see cref="AgentSkillScript"/>, or <see langword="null"/> when no script with the given name exists.
/// </returns>
/// <remarks>
/// The default implementation returns <see langword="null"/>.
/// Override this property in derived classes to provide skill-specific scripts.
/// The default implementation returns <see langword="null"/>. Override in derived classes that
/// expose scripts.
/// </remarks>
public virtual IReadOnlyList<AgentSkillScript>? Scripts => null;
public virtual ValueTask<AgentSkillScript?> GetScriptAsync(
string name,
CancellationToken cancellationToken = default) => default;
}
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