An MCP server that provides Roslyn-based analysis for .NET projects. Roslyn is Microsoft's technology for reading and understanding C# code.

Use it as the code-analysis service behind .NET development tasks; it requires the configured `dnp-roslyn` command and two environment settings.

It lets compatible coding-agent tools inspect a .NET solution using information about the code's meaning, not only its text.

roslyn — MCP server for Claude Code by zdanovichnick

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo

git clone --depth 1 https://github.com/zdanovichnick/dotnet-pilot

Made for: Claude Code.

Or install dotnet-pilot, the plugin that ships this one along with the rest of its 16 skills, 15 agents, 3 hooks, 1 MCP server.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/mcp/zdanovichnick/dotnet-pilot/roslyn.svg)](https://agentmods.dev/mcp/zdanovichnick/dotnet-pilot/roslyn)

Your own site

<a href="https://agentmods.dev/mcp/zdanovichnick/dotnet-pilot/roslyn"><img src="https://agentmods.dev/badge/mcp/zdanovichnick/dotnet-pilot/roslyn.svg" alt="Measured on agentmods" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

roslyn scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.mcp.json · 10 lines

What it actually says

{
  "roslyn": {
    "command": "dnp-roslyn",
    "args": [],
    "env": {
      "DNP_ROSLYN_LOG_LEVEL": "Warning",
      "DNP_ROSLYN_MIN_VERSION": "0.3"
    }
  }
}

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

7d ago First seen · 10 lines scan A b260d65bce5a

Subscribe to this mod's changes

roslyn is an MCP server published in the GitHub repository zdanovichnick/dotnet-pilot (4 stars, last pushed 11d ago), licensed MIT. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

C# and .NET Claude Code Languages agents ai-coding aspnet-core claude-code-plugin clean-architecture

roslyn

Getting it into your agent

Wrote this? Show the measurements

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

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