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mcp/harbor
Grok

XFuel for Grok

io.github.xfuel-lab/xfuel-mcp

Submit AI inference to XFuel, pay per task (USDC via x402 or TFUEL), fetch/verify ZK proofs.

client:Grok transport:stdio runtime:npm

Install XFuel 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": {
    "xfuel-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "xfuel-mcp"
      ],
      "env": {
        "XFUEL_API_URL": "<XFUEL_API_URL>",
        "XFUEL_API_KEY": "<XFUEL_API_KEY>",
        "XFUEL_MCP_AUTH_TOKEN": "<XFUEL_MCP_AUTH_TOKEN>",
        "XFUEL_RPC_URL": "<XFUEL_RPC_URL>",
        "ZK_VERIFIER_ADDRESS": "<ZK_VERIFIER_ADDRESS>",
        "XFUEL_PAYER_PRIVATE_KEY": "<XFUEL_PAYER_PRIVATE_KEY>"
      }
    }
  }
}

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

XFuel in other clients

XFuel MCP server