Add Cursor plugin marketplace support

.cursor-plugin/marketplace.json

@@ -0,0 +1,66 @@
+{
+  "name": "dotnet-agent-skills",
+  "owner": {
+    "name": ".NET Team at Microsoft"
+  },
+  "metadata": {
+    "description": "Curated .NET agent skills and custom agents from the .NET team at Microsoft."
+  },
+  "plugins": [
+    {
+      "name": "dotnet",
+      "source": "./plugins/dotnet",
+      "description": "Collection of core .NET skills for handling common .NET coding tasks."
+    },
+    {
+      "name": "dotnet-data",
+      "source": "./plugins/dotnet-data",
+      "description": "Skills for .NET data access and Entity Framework related tasks."
+    },
+    {
+      "name": "dotnet-diag",
+      "source": "./plugins/dotnet-diag",
+      "description": "Skills for .NET performance investigations, debugging, and incident analysis."
+    },
+    {
+      "name": "dotnet-msbuild",
+      "source": "./plugins/dotnet-msbuild",
+      "description": "Comprehensive MSBuild and .NET build skills: failure diagnosis, performance optimization, code quality, and modernization."
+    },
+    {
+      "name": "dotnet-nuget",
+      "source": "./plugins/dotnet-nuget",
+      "description": "NuGet and .NET package management: dependency management and modernization."
+    },
+    {
+      "name": "dotnet-upgrade",
+      "source": "./plugins/dotnet-upgrade",
+      "description": "Skills for migrating and upgrading .NET projects across framework versions, language features, and compatibility targets."
+    },
+    {
+      "name": "dotnet-maui",
+      "source": "./plugins/dotnet-maui",
+      "description": "Skills for .NET MAUI development: environment setup, diagnostics, troubleshooting, navigation, data binding, dependency injection, layout, and theming."
+    },
+    {
+      "name": "dotnet-ai",
+      "source": "./plugins/dotnet-ai",
+      "description": "AI and ML skills for .NET: technology selection, LLM integration, agentic workflows, RAG pipelines, MCP, and classic ML with ML.NET."
+    },
+    {
+      "name": "dotnet-template-engine",
+      "source": "./plugins/dotnet-template-engine",
+      "description": ".NET Template Engine skills: template discovery, project scaffolding, and template authoring."
+    },
+    {
+      "name": "dotnet-test",
+      "source": "./plugins/dotnet-test",
+      "description": "Skills for running, diagnosing, and migrating .NET tests: test execution, filtering, platform detection, and MSTest workflows."
+    },
+    {
+      "name": "dotnet-aspnet",
+      "source": "./plugins/dotnet-aspnet",
+      "description": "ASP.NET Core web development skills including middleware, endpoints, real-time communication, and API patterns."
+    }
+  ]
+}

CONTRIBUTING.md

@@ -51,7 +51,7 @@ If your skill does not fit any existing plugin, consider creating a new one.
 To create a new plugin:
 
 1. Add `plugins/<plugin-name>/plugin.json` and a `skills/` directory beneath it.
-2. Add a matching entry in both `.github/plugin/marketplace.json` and `.claude-plugin/marketplace.json`. The `.claude-plugin/marketplace.json` file must remain an exact copy of `.github/plugin/marketplace.json`, so any change to one file (adding, removing, or editing a plugin entry) must be applied to the other in the same way.
+2. Add a matching entry in `.github/plugin/marketplace.json`, `.claude-plugin/marketplace.json`, and `.cursor-plugin/marketplace.json`. Keep plugin entries consistent across all marketplace manifests (including `plugins[].source` format) to reduce drift and make future updates safer.
 3. Add a CODEOWNERS entry for the new plugin and its tests (see [Code ownership](#code-ownership)).
 4. Add the plugin to the **What's Included** table in the root `README.md`.
 5. Create a `tests/<plugin-name>/` directory for skill tests.

README.md

@@ -62,6 +62,19 @@ This repository contains the .NET team's curated set of core skills and custom a
 
 Once configured, type `/plugins` in Copilot Chat or use the `@agentPlugins` filter in Extensions to browse and install plugins from the marketplace.
 
+### Cursor
+
+This repository is a [Cursor plugin marketplace](https://cursor.com/docs/plugins). You can discover and install published plugins directly in Cursor:
+
+1. Open the marketplace panel in Cursor
+2. Search for `.NET` or browse [cursor.com/marketplace](https://cursor.com/marketplace)
+3. Install the desired plugins
+
+For local development or unpublished changes, import plugins from a local checkout:
+
+1. Copy or symlink your local checkout to `~/.cursor/plugins/local/dotnet-agent-skills`
+2. Restart Cursor or run **Developer: Reload Window**
+
 ### Codex CLI
 
 Skills in this repository follow the [agentskills.io](https://agentskills.io) open standard