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Mcp

io.github.2s-io/mcp · v1.82.0

575+ agent tools: data, AI gateway, storage/queues/watchers. x402 USDC, no keys, usage billing.

Connect Runs on your machine

Terminal
claude mcp add mcp -e EVM_PRIVATE_KEY=<EVM_PRIVATE_KEY> -- npx -y @2sio/[email protected]
claude_desktop_config.json
{
  "mcpServers": {
    "mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@2sio/[email protected]"
      ],
      "env": {
        "EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>"
      }
    }
  }
}
~/.cursor/mcp.json
{
  "mcpServers": {
    "mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@2sio/[email protected]"
      ],
      "env": {
        "EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@2sio/[email protected]"
      ],
      "env": {
        "EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>"
      }
    }
  }
}

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

This server runs locally, so its tools are listed by your MCP client once it starts.

Environment variables

NameDescription
EVM_PRIVATE_KEY
Required, secret
Hex-encoded EVM private key (0x-prefixed) used by the SDK to sign x402 EIP-3009 payment authorizations. Funds USDC on Base.

Details

Package@2sio/[email protected] (NPM, stdio)
First published21 Aug 2026
Last updated21 Aug 2026
Registry nameio.github.2s-io/mcp

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