x402-market MCP Server

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

claude mcp add mcp-server -- npx -y @x402-market/mcp-server

{
  "mcpServers": {
    "mcp-server": {
      "args": [
        "-y",
        "@x402-market/mcp-server"
      ],
      "command": "npx"
    }
  }
}

[mcp_servers.mcp-server]
command = "npx"
args = ["-y", "@x402-market/mcp-server"]

{
  "mcpServers": {
    "mcp-server": {
      "args": [
        "-y",
        "@x402-market/mcp-server"
      ],
      "command": "npx"
    }
  }
}

{
  "mcpServers": {
    "mcp-server": {
      "args": [
        "-y",
        "@x402-market/mcp-server"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: MARKET_API_URL (Marketplace API base URL.), MCP_BUYER_PRIVATE_KEY (Funded buyer wallet private key (0x-prefixed). Required for pay_and_call; read-only tools work without it.), BASE_RPC_URL (Base RPC endpoint. Defaults to Base mainnet public RPC; Alchemy/QuickNode recommended for higher rate limits.), BASE_CHAIN_ID (8453 = Base mainnet (default, matches live listings). 84532 = Base Sepolia testnet.), MCP_MAX_PRICE (Hard cap on per-call cost (USDC). Refuses to pay above this.). The author declared them in the registry entry; get the values from the project itself.