This repository contains the .NET team's curated set of portable skills and host-specific custom agents for coding agents. For information about the Agent Skills standard, see agentskills.io.
Tip
Compare skill value: Open the Skill Value dashboard See token use, elapsed time, activation, and not-passed rates by plugin, skill, executor model, and judge model.
Plugin support is component-specific:
- Skills and MCP servers are the portable component types defined by Agent Plugins 1.0.
- Files under
agents/*.agent.mduse GitHub Copilot custom-agent conventions. They are not installed as native OpenAI Codex agents. - Native Codex agents use
.codex/agents/*.toml. This repository does not currently ship them because Codex plugin installation does not place agent files in those discovery locations.
| Plugin | Description |
|---|---|
| dotnet | High-level .NET development skills plus C# language server (LSP) integration for hosts that support it. |
| dotnet-advanced | Collection of .NET skills for handling specific .NET tasks for special scenarios. |
| dotnet-data | Skills for .NET data access and Entity Framework related tasks. |
| dotnet-diag | Skills for .NET performance investigations, debugging, and incident analysis. |
| dotnet-msbuild | Comprehensive MSBuild and .NET build skills: failure diagnosis, performance optimization, code quality, and modernization. |
| dotnet-nuget | NuGet and .NET package management: dependency management and modernization. |
| dotnet-upgrade | Skills for migrating and upgrading .NET projects across framework versions, language features, and compatibility targets. |
| dotnet-maui | Skills for .NET MAUI development: environment setup, diagnostics, and troubleshooting. |
| dotnet-ai | AI and ML skills for .NET: technology selection, LLM integration, agentic workflows, RAG pipelines, MCP, and classic ML with ML.NET. |
| dotnet-template-engine | .NET Template Engine skills: template discovery, project scaffolding, and template authoring. |
| dotnet-test | Skills for running, generating, analyzing, and improving .NET tests: test execution, filtering, platform detection, coverage, testability, and MSTest workflows. |
| dotnet-test-migration | Skills and a GitHub Copilot orchestrator agent for migrating .NET test frameworks and platforms: MSTest and xUnit version upgrades, xUnit-to-MSTest conversion, and VSTest to Microsoft.Testing.Platform. |
| dotnet-aspnetcore | ASP.NET Core web development skills including middleware, endpoints, real-time communication, and API patterns. |
| dotnet-blazor | Skills for Blazor development: component authoring, interactivity, and web application patterns. |
| dotnet-winforms | Skills for Windows Forms development: project setup, UI design, data binding, accessibility, and modern .NET practices. |
| dotnet11 | Skills for new .NET 11 APIs and language features. |
Reusable GitHub Agentic Workflows are published under
agentic-workflows/. Install the complete collection with
gh aw add-wizard dotnet/skills/agentic-workflows@main, or install an individual
package using the command in its README.
- Launch Copilot CLI or Claude Code
- Add the marketplace:
/plugin marketplace add dotnet/skills - Install a plugin:
/plugin install <plugin>@dotnet-agent-skills - Restart to load the new plugins
- View available skills:
/skills - View available agents:
/agents - Update plugin (on demand):
/plugin update <plugin>@dotnet-agent-skills
Important
VS Code plugin support is a preview feature and subject to change. You may need to enable it first.
Once configured, type /plugins in Copilot Chat or use the @agentPlugins filter in Extensions to browse and install plugins from the marketplace.
This repository is a Cursor plugin marketplace. You can discover and install published plugins directly in Cursor:
- Open the marketplace panel in Cursor
- Search for
.NETor browse cursor.com/marketplace - Install the desired plugins
For local development or unpublished changes, import plugins from a local checkout:
- Copy or symlink your local checkout to
~/.cursor/plugins/local/dotnet-agent-skills - Restart Cursor or run Developer: Reload Window
Skills in this repository follow the agentskills.io open standard and are compatible with OpenAI Codex.
Codex plugin installs expose the skills and any Codex-compatible MCP servers declared by the
plugin. They do not expose the repository's GitHub Copilot .agent.md files, their static
handoffs, or host-specific LSP declarations. Use Codex's built-in dynamic subagent delegation
instead. Native Codex custom agents are a separate configuration mechanism documented under
multi-agent workflows. OpenAI
Agents SDK handoffs are an
application-level transfer between SDK-defined agents; they are separate from both Copilot's
static UI handoff metadata and Codex plugin or custom-agent packaging.
Codex CLI v0.121.0 and later supports a plugin marketplace.
This repository ships a Codex-native marketplace manifest at .agents/plugins/marketplace.json,
so you can register dotnet/skills as a marketplace and install plugins from it directly.
- Add the marketplace:
codex plugin marketplace add dotnet/skills
- Launch Codex and open the plugin browser:
/plugins - Browse the
dotnet-agent-skillstab and install the desired plugins. - Update plugins on demand:
codex plugin marketplace upgrade dotnet-agent-skills
You can also install individual skills using the skill-installer CLI with the GitHub URL:
$ skill-installer install https://github.com/dotnet/skills/tree/main/plugins/<plugin>/skills/<skill-name>See CONTRIBUTING.md for contribution guidelines and how to add a new plugin.
See LICENSE for details.