XFuel MCP Server

io.github.XFuel-Lab/xfuel-mcp

Repository Registry

What is the XFuel MCP server?

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

How to install XFuel

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

XFUEL_API_URL
XFuel API base URL. Defaults to the hosted testnet demo.
XFUEL_API_KEY
secret
API key sent as X-API-Key. Defaults to the shared public demo key.
XFUEL_MCP_AUTH_TOKEN
secret
Optional bearer token required on the HTTP transport (Authorization: Bearer <token>).
XFUEL_RPC_URL
Theta RPC URL enabling verify_proof's optional on-chain nullifier read.
ZK_VERIFIER_ADDRESS
ZKVerifierSP1 contract address (paired with XFUEL_RPC_URL).
XFUEL_PAYER_PRIVATE_KEY
secret
Funded payer private key that enables the pay_with_usdc tool. Moves USDC — keep secret; use a low-balance wallet.

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "xfuel-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "xfuel-mcp"
      ],
      "env": {
        "XFUEL_API_URL": "<YOUR_XFUEL_API_URL>",
        "XFUEL_API_KEY": "<YOUR_XFUEL_API_KEY>",
        "XFUEL_MCP_AUTH_TOKEN": "<YOUR_XFUEL_MCP_AUTH_TOKEN>",
        "XFUEL_RPC_URL": "<YOUR_XFUEL_RPC_URL>",
        "ZK_VERIFIER_ADDRESS": "<YOUR_ZK_VERIFIER_ADDRESS>",
        "XFUEL_PAYER_PRIVATE_KEY": "<YOUR_XFUEL_PAYER_PRIVATE_KEY>"
      }
    }
  }
}

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