Roslyn Backed MCP Server
by darylmcdio.github.darylmcd/roslyn-mcpv4.3.0
Local-first MCP server for semantic C# analysis & refactoring via Roslyn & MSBuildWorkspace.
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Active3d ago
Install Roslyn Backed MCP server
Install in Claude Code
claude mcp add roslyn-backed -- dnx Darylmcd.RoslynMcp --yesInstall in Cursor
{
"mcpServers": {
"roslyn-backed": {
"command": "dnx",
"args": [
"Darylmcd.RoslynMcp",
"--yes"
]
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).
Install in Claude Desktop
{
"mcpServers": {
"roslyn-backed": {
"command": "dnx",
"args": [
"Darylmcd.RoslynMcp",
"--yes"
]
}
}
}Settings → Developer → Edit Config (claude_desktop_config.json), then restart.
Install in VS Code
{
"servers": {
"roslyn-backed": {
"type": "stdio",
"command": "dnx",
"args": [
"Darylmcd.RoslynMcp",
"--yes"
]
}
}
}Add to .vscode/mcp.json in your workspace.
Install in Windsurf
{
"mcpServers": {
"roslyn-backed": {
"command": "dnx",
"args": [
"Darylmcd.RoslynMcp",
"--yes"
]
}
}
}Add to ~/.codeium/windsurf/mcp_config.json.
Configuration
| Variable | Required | Secret | Description |
|---|---|---|---|
| ROSLYNMCP_SANCTIONED_ROOTS | — | — | Server-owned filesystem boundary for path validation and solution discovery. Path-separator-delimited (';' on Windows, ':' on macOS/Linux). '.' scopes the server to its working directory. An empty value fails closed: every path-taking tool rejects its input. |
Freshness
Active — last maintenance signal 3d ago. The newest of the signals below sets the band.
Last commit (default branch)
2026-10-07 · 3d ago · GitHub
Latest release
2026-05-06 · 5mo ago · GitHub · v1.34.0
Package published
no data · npm/PyPI
Registry entry updated
2026-09-29 · 11d ago · official registry · v4.3.0
FAQ
›How do I install the Roslyn Backed MCP server in Claude Code?
Run: claude mcp add roslyn-backed -- dnx Darylmcd.RoslynMcp --yes. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.
›Does Roslyn Backed require an API key?
No required environment variables are declared in its published metadata.
›Can I use Roslyn Backed as a remote (hosted) MCP server?
No hosted endpoint is published; it runs locally over stdio.
›Is Roslyn Backed in the official MCP registry?
Yes, as io.github.darylmcd/roslyn-mcp.