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Locus

Official registry Developer tools

Lightweight MCP server for LSP code intelligence — symbol lookup, refs, types, diagnostics.

Source code

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

NPM package @paladini/locus-mcp
Claude Code 
claude mcp add locus -- npx -y @paladini/locus-mcp@0.1.5 serve
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "locus": {
            "command": "npx",
            "args": [
                "-y",
                "@paladini/locus-mcp@0.1.5",
                "serve"
            ]
        }
    }
}

Frequently asked questions

What is Locus?

Lightweight MCP server for LSP code intelligence — symbol lookup, refs, types, diagnostics.

How do I install Locus?

It runs on your machine. In Claude Code: claude mcp add locus -- npx -y @paladini/locus-mcp@0.1.5 serve. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Locus need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Locus open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains Locus?

It is published by paladini. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.