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mcp/harbor
Cursor

D20DAO Verifiable Randomness for Cursor

org.d20dao/vrf

Verifiable dice, draws and shuffles with on-chain VRF proofs on Arc. 0.05 USDC per draw.

client:Cursor transport:stdio runtime:npm

Install D20DAO Verifiable Randomness in Cursor

~/.cursor/mcp.json · windows: %USERPROFILE%\.cursor\mcp.json

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

{
  "mcpServers": {
    "vrf": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@d20dao/mcp"
      ],
      "env": {
        "D20_DAILY_LIMIT_USDC": "<D20_DAILY_LIMIT_USDC>",
        "D20_NETWORK": "<D20_NETWORK>",
        "D20_PAY_CHAIN": "<D20_PAY_CHAIN>",
        "D20_WALLET_ADDRESS": "<D20_WALLET_ADDRESS>",
        "D20_CIRCLE_CLI": "<D20_CIRCLE_CLI>",
        "D20_MCP_HOME": "<D20_MCP_HOME>"
      }
    }
  }
}

Use .cursor/mcp.json in a project root instead to scope it to that project. Cursor merges both. Cursor docs

D20DAO Verifiable Randomness in other clients

D20DAO Verifiable Randomness MCP server