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mcp/harbor
Grok

Shinjuku Shielded for Grok

io.github.shinjukustaition/shinjuku-mcp

Private x402 payments on Solana: shield, pay, and unshield USDC under caps you set.

client:Grok transport:stdio runtime:npm

Install Shinjuku Shielded 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": {
    "shinjuku-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "shinjuku-shielded"
      ],
      "env": {
        "SHIELDED_WALLET_HOME": "<SHIELDED_WALLET_HOME>",
        "SHIELDED_WALLET_PASSPHRASE": "<SHIELDED_WALLET_PASSPHRASE>"
      }
    }
  }
}

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

Shinjuku Shielded in other clients

Shinjuku Shielded MCP server