MCP server for local transaction signing on EVM, UTXO, Tron, and XRP — no API calls needed

{
  "mcpServers": {
    "iogithubcryptoapis-iomcp-signer": {
      "command": "npx",
      "args": [
        "-y",
        "@cryptoapis-io/mcp-signer"
      ]
    }
  }
}