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mcp/harbor
Grok

Upsilon — AI Operator Measurement Engine for Grok

io.github.sunrisesillneversee/sigrank-mcp

Upsilon measurement engine with 25 local tools and SigRank proof access via the sigrank package.

client:Grok transport:stdio runtime:npm

Install Upsilon — AI Operator Measurement Engine in Grok

.mcp.json (in your project root) 

{
  "mcpServers": {
    "sigrank-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "sigrank"
      ]
    }
  }
}

Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs

Upsilon — AI Operator Measurement Engine in other clients

Upsilon — AI Operator Measurement Engine MCP server