Coin Railz MCP Server

Instructions

Implementation Reference

• coinrailz_mcp/__init__.py:510-541 (handler)

  The handler function 'build_transaction' that builds a transaction using the 'transaction-builder' service.

  async def build_transaction(
      from_address: str,
      to_address: str,
      value: str,
      chain: str = "ethereum",
      token_address: str = None
  ) -> str:
      """
      Build a transaction object ready for signing.
      
      Args:
          from_address: Sender wallet address
          to_address: Recipient wallet address
          value: Amount to send (in token units or wei)
          chain: Blockchain network
          token_address: Optional ERC-20 token address (native token if not provided)
      
      Returns:
          Unsigned transaction object with gas estimates.
      
      Price: $0.15
      """
      payload = {
          "from": from_address,
          "to": to_address,
          "value": value,
          "chain": chain
      }
      if token_address:
          payload["tokenAddress"] = token_address
      result = await call_coinrailz_service("transaction-builder", payload)
      return json.dumps(result, indent=2)