Roslyn-powered MCP server for C#/VB.NET. Query symbols, call graphs, and facts. 90%+ token savings.
Connect Runs on your machine
claude mcp add codemap-mcp -e CODEMAP_CACHE_DIR=<CODEMAP_CACHE_DIR> -- dnx codemap-mcp --yes
{
"mcpServers": {
"codemap-mcp": {
"command": "dnx",
"args": [
"codemap-mcp",
"--yes"
],
"env": {
"CODEMAP_CACHE_DIR": "<CODEMAP_CACHE_DIR>"
}
}
}
}
{
"mcpServers": {
"codemap-mcp": {
"command": "dnx",
"args": [
"codemap-mcp",
"--yes"
],
"env": {
"CODEMAP_CACHE_DIR": "<CODEMAP_CACHE_DIR>"
}
}
}
}
{
"servers": {
"codemap-mcp": {
"type": "stdio",
"command": "dnx",
"args": [
"codemap-mcp",
"--yes"
],
"env": {
"CODEMAP_CACHE_DIR": "<CODEMAP_CACHE_DIR>"
}
}
}
}
Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
CODEMAP_CACHE_DIROptional | Path to a shared baseline cache directory. When set, index.ensure_baseline checks the cache before running a full Roslyn build — useful on CI or shared machines. |
Details
| Package | [email protected] (NUGET, stdio) |
| First published | 2 Apr 2026 |
| Last updated | 2 Apr 2026 |
| Registry name | io.github.bbajt/codemap-mcp |
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