SERVER

Roslyn CodeLens

Rank #777

io.github.MarcelRoozekrans/roslyn-codelens

Roslyn MCP server: semantic .NET/C# intelligence - analysis, refactoring, tests, IL inspection.

32 versions

61 GitHub stars

by marcelroozekrans (3 servers)View repository ↗

First listed

Mar 6, 2026

Last publish date

Oct 13, 2026

PURPOSE

What you can do with Roslyn CodeLens

Roslyn CodeLens is a Model Context Protocol (MCP) server published by marcelroozekrans. It ranks #777 of 144,396 active servers on MCP Toplist, and its repository has 61 GitHub stars. Roslyn CodeLens is listed across 4 registries — Official MCP, PulseMCP, Glama and mcp.so, with 32 tracked versions. It was first listed on Mar 6, 2026 and most recently updated on Oct 13, 2026.

Not verifiedMCP Toplist has not yet written a checked profile for this server, so the paragraph above is assembled from registry data only. The repository README is the authority on what it does.

CAPABILITIES AND LIMITATIONS

What Roslyn CodeLens can and cannot do

Not verifiedMCP Toplist has not catalogued this server's tools or limitations. The repository README lists them.

REQUIREMENTS

What you need before using Roslyn CodeLens

DeclaredNo credentialsNo credentials declared

The registry listing declares no required environment variables or authentication. This is declared metadata, not a verified install — the repository README is the authority.

Declared by Glama, last synced Oct 16, 2026. Not independently verified by MCP Toplist.

No runtime, credential or payment requirements are recorded for this server beyond the declaration above.

INSTALLATION AND FIRST TASK

Connect Roslyn CodeLens and confirm it works

npm package

claude mcp add roslyn-codelens -- npx -y roslyn-codelens-mcp

NuGet package

claude mcp add roslyn-codelens -- dnx RoslynCodeLens.Mcp

npm package

[mcp_servers.roslyn-codelens]
command = "npx"
args = ["-y", "roslyn-codelens-mcp"]

Add to ~/.codex/config.toml.

NuGet package

[mcp_servers.roslyn-codelens]
command = "dnx"
args = ["RoslynCodeLens.Mcp"]

Add to ~/.codex/config.toml.

npm package

{
  "mcpServers": {
    "roslyn-codelens": {
      "command": "npx",
      "args": [
        "-y",
        "roslyn-codelens-mcp"
      ]
    }
  }
}

Add to claude_desktop_config.json (Settings → Developer → Edit Config).

NuGet package

{
  "mcpServers": {
    "roslyn-codelens": {
      "command": "dnx",
      "args": [
        "RoslynCodeLens.Mcp"
      ]
    }
  }
}

Add to claude_desktop_config.json (Settings → Developer → Edit Config).

npm package

{
  "mcpServers": {
    "roslyn-codelens": {
      "command": "npx",
      "args": [
        "-y",
        "roslyn-codelens-mcp"
      ]
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project).

NuGet package

{
  "mcpServers": {
    "roslyn-codelens": {
      "command": "dnx",
      "args": [
        "RoslynCodeLens.Mcp"
      ]
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project).

npm package

{
  "servers": {
    "roslyn-codelens": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "roslyn-codelens-mcp"
      ]
    }
  }
}

Save as .vscode/mcp.json in your workspace.

NuGet package

{
  "servers": {
    "roslyn-codelens": {
      "type": "stdio",
      "command": "dnx",
      "args": [
        "RoslynCodeLens.Mcp"
      ]
    }
  }
}

Save as .vscode/mcp.json in your workspace.

npm package

{
  "mcpServers": {
    "roslyn-codelens": {
      "command": "npx",
      "args": [
        "-y",
        "roslyn-codelens-mcp"
      ]
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

NuGet package

{
  "mcpServers": {
    "roslyn-codelens": {
      "command": "dnx",
      "args": [
        "RoslynCodeLens.Mcp"
      ]
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

npm package

{
  "mcpServers": {
    "roslyn-codelens": {
      "command": "npx",
      "args": [
        "-y",
        "roslyn-codelens-mcp"
      ]
    }
  }
}

NuGet package

{
  "mcpServers": {
    "roslyn-codelens": {
      "command": "dnx",
      "args": [
        "RoslynCodeLens.Mcp"
      ]
    }
  }
}

First successful task

After adding the config, ask your client to list this server's tools. A tool list confirms the connection; an empty list or an error means the server did not start or needs credentials.

ALTERNATIVES

When to choose another server

Other servers by marcelroozekrans

View all marcelroozekrans servers →

No task-specific alternatives are catalogued for Roslyn CodeLensyet; the list above is its publisher's other servers.

MAINTENANCE AND EVIDENCE

What changed, and when this was checked

First listed: Mar 6, 2026
Latest version published: Oct 13, 2026
Version history: 32 versions tracked (below)
Requirements evidence: Declared by Glama, last synced Oct 16, 2026. Not independently verified by MCP Toplist.
Profile checked: Not yet — purpose, capabilities and requirements above come from registry data only
Ranking data as of: Oct 16, 2026

Registry sightings

Official MCP ↗listed since Apr 25, 2026 · still listed
PulseMCP ↗listed since Jun 4, 2026 · still listed
Glama ↗listed since Jun 4, 2026 · still listed
mcp.so ↗listed since Aug 26, 2026 · still listed

Do you maintain Roslyn CodeLens? to correct or enrich this profile.

VERSIONS

Available versions (32)

Version	Published
2.18.2	Oct 13, 2026
2.18.1	Sep 17, 2026
2.18.0	Aug 21, 2026
2.17.0	Aug 14, 2026
2.16.2	Aug 12, 2026
2.16.1	Jul 28, 2026
2.13.0	Jul 22, 2026
2.11.0	Jul 20, 2026
2.10.0	Jul 20, 2026
2.9.0	Jul 20, 2026
2.8.0	Jul 20, 2026
2.7.0	Jul 19, 2026
2.6.0	Jul 19, 2026
2.5.0	Jul 19, 2026
2.4.6	Jul 15, 2026
2.4.2	Jul 9, 2026
2.2.2	Jun 16, 2026
2.2.1	Jun 16, 2026
2.0.0	May 26, 2026
1.18.0	May 22, 2026
1.17.1	May 17, 2026
1.17.0	May 11, 2026
1.14.0	May 1, 2026
1.13.0	May 1, 2026
1.12.0	May 1, 2026
1.10.0	Apr 30, 2026
1.9.0	Apr 29, 2026
1.8.0	Apr 29, 2026
1.4.0	Apr 28, 2026
1.2.1	Apr 26, 2026
1.1.6	Mar 30, 2026
0.1.0	Nov 25, 2024

STANDING

#777of 144,396 active serversTop 1%

Ranks ahead of 143,619 of 144,396 servers on MCP Toplist.

Recent momentum

+53GitHub stars since Apr 27 (+663%)

BADGE

Show your rank

Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.

Markdown

[![MCP Toplist](https://mcptoplist.com/badge/io.github.MarcelRoozekrans%2Froslyn-codelens.svg)](https://mcptoplist.com/server/io.github.MarcelRoozekrans%2Froslyn-codelens)

HTML

<a href="https://mcptoplist.com/server/io.github.MarcelRoozekrans%2Froslyn-codelens"><img src="https://mcptoplist.com/badge/io.github.MarcelRoozekrans%2Froslyn-codelens.svg" alt="MCP Toplist: Top 1% of 144,396" /></a>

Variants: append ?metric=score or ?metric=stars to the image URL.

FAQ

Frequently asked questions

Who maintains Roslyn CodeLens?: Roslyn CodeLens is maintained by marcelroozekrans, which publishes 3 MCP servers (45 total versions) tracked on MCP Toplist.
Is Roslyn CodeLens listed on the Official MCP Registry?: Yes — Roslyn CodeLens is listed on the Official MCP Registry, alongside PulseMCP, Glama and mcp.so.
How many versions does Roslyn CodeLens have?: MCP Toplist tracks 32 versions of Roslyn CodeLens, most recently published on Oct 13, 2026.
Where can I find the source code for Roslyn CodeLens?: The source code for Roslyn CodeLens is hosted at github.com/marcelroozekrans/roslyn-codelens-mcp.

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