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Grok

lotero for Grok

io.github.csacanam/lotero

Provably fair on-chain slot machine for AI agents: x402 spins on Base, Chainlink VRF results.

client:Grok transport:stdio runtime:npm

Install lotero in Grok

.mcp.json (in your project root)

Held in this page only — never stored, logged, or sent anywhere but back to your screen.

{
  "mcpServers": {
    "lotero": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "lotero-mcp"
      ],
      "env": {
        "LOTERO_WALLET_PRIVATE_KEY": "<LOTERO_WALLET_PRIVATE_KEY>",
        "LOTERO_PLAYER_ADDRESS": "<LOTERO_PLAYER_ADDRESS>",
        "LOTERO_MAX_SPINS_PER_SESSION": "<LOTERO_MAX_SPINS_PER_SESSION>"
      }
    }
  }
}

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

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