@engineer-fumi/sysml-v2-mcp

Standalone MCP (Model Context Protocol) server for SysML v2 (.sysml / .kerml) models. It exposes a workspace of SysML v2 files to MCP clients such as Claude Desktop and Claude Code as resolved model structure — not just text — covering parse, validate, outline, requirements and diagram structure.

This is the companion server to the SysML v2 Studio VS Code extension and reuses the same parser / name resolution / validation core, so its diagnostics match what you see in the editor. It has no runtime dependencies (a single bundled file, newline-delimited JSON-RPC 2.0 over stdio).

Use it (no install)

Claude Code

claude mcp add sysml -- npx -y @engineer-fumi/sysml-v2-mcp "$(pwd)"

Claude Desktop

{
  "mcpServers": {
    "sysml": {
      "command": "npx",
      "args": ["-y", "@engineer-fumi/sysml-v2-mcp", "<ABS_PATH_TO_YOUR_MODEL_WORKSPACE>"]
    }
  }
}

The first positional argument (or $SYSML_WORKSPACE, else the current directory) is the workspace root scanned recursively for .sysml / .kerml files.

Tools

list_files, outline, validate, find_element, list_requirements, describe_diagram. See the MCP guide for details and usage examples.

License

MIT — see LICENSE.