NuGet API Inspector MCP server

NugetMcpServer

<!-- mcp-name: io.github.DimonSmart/NugetMcpServer -->

Bad NuGet API guesses are expensive.

NugetMcpServer lets Codex, Claude Code, VS Code, Claude Desktop, and other MCP clients inspect real NuGet package metadata and public APIs before generating code. It is most useful when package version details matter or when the package lives in a private feed.

Fastest path: install it with codex mcp add or claude mcp add, then ask your assistant to use the NuGet MCP server before writing package-dependent code.

Why this exists

LLMs often know popular libraries, but they do not reliably know the exact API surface of every package version. NugetMcpServer gives the assistant a way to check the package first instead of filling gaps from memory.

NugetMcpServer connects the assistant to NuGet packages directly, including private feeds and local package folders.

What it gives to your assistant

• Search NuGet packages and inspect package metadata.
• Read public API definitions for real package versions.
• Compare versions, inspect package files, and use nuget.org, private feeds, or local package folders.

Quick start

These commands use the current published NuGet package version, 1.1.7. dnx downloads and runs the .NET tool from NuGet, so you do not need a separate dotnet tool install step.

1. Install via Codex CLI

codex mcp add nuget -- dnx DimonSmart.NugetMcpServer@1.1.7 --yes

Check available MCP commands:

codex mcp --help

Inside the Codex TUI, run:

/mcp

Codex CLI and the Codex IDE extension share MCP configuration, so configuring the server once should make it available in both clients.

2. Install via Claude Code CLI

claude mcp add --transport stdio nuget -- dnx DimonSmart.NugetMcpServer@1.1.7 --yes

Everything after -- is the actual MCP server command and arguments.

Manage and verify the server:

claude mcp list
claude mcp get nuget

Inside Claude Code, run:

/mcp

3. Install in VS Code

Open the NuGet package page, select the MCP Server tab, and copy the generated VS Code configuration.

For manual VS Code configuration, add this to mcp.json. Replace with the package version you want to pin:

{
  "servers": {
    "nuget": {
      "type": "stdio",
      "command": "dnx",
      "args": ["DimonSmart.NugetMcpServer@<version>", "--yes"]
    }
  }
}

4. Install via Docker

Use Docker when the MCP client environment does not have the .NET SDK available.

Codex:

codex mcp add nuget-docker -- docker run -i --rm ghcr.io/dimonsmart/nugetmcpserver:latest

Claude Code:

claude mcp add --transport stdio nuget-docker -- docker run -i --rm ghcr.io/dimonsmart/nugetmcpserver:latest

Run the container directly:

docker run -i --rm ghcr.io/dimonsmart/nugetmcpserver:latest

VS Code mcp.json:

{
  "servers": {
    "nuget": {
      "type": "stdio",
      "command": "docker",
      "args": ["run", "-i", "--rm", "ghcr.io/dimonsmart/nugetmcpserver:latest"]
    }
  }
}

Install in VS Code with Docker

5. Manual configuration

Shortened. The full README is on GitHub.