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shikamaru for Grok

io.github.jayofemi/shikamaru

Provably correct day-count, calendar, business-day, and schedule math, verified against QuantLib.

client:Grok transport:stdio runtime:npm

Install shikamaru in Grok

.mcp.json (in your project root)

{
  "mcpServers": {
    "shikamaru": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@jayofemi/shikamaru"
      ]
    }
  }
}

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

shikamaru in other clients